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NEET ]1[ Contd...
NEET Biology Class 12 - Ecosystem Ultra-Hard Question Bank
Instructions:
- Each question has four options (1), (2), (3), (4). Choose the most correct answer.
- Each correct answer carries 4 marks.
- Each wrong answer will deduct 1 marks.
- Unanswered questions will not be penalised.
1.Consider the following statements regarding the structural boundaries of an ecosystem
(Question 1):\n\nI. An ecosystem is visualised as a functional unit of nature, where living
organisms interact among themselves and also with their surrounding physical
environment.\nII. Ecologists regard the entire biosphere as a global ecosystem, which represents
a composite of all local ecosystems on Earth.\nIII. The global ecosystem is so simple that it is
always studied as a single composite unit at one time.\nIV. Forests, grasslands, and estuaries
represent some natural examples of terrestrial ecosystems.\n\nWhich of the statements given
above are correct according to the NCERT text?
(Question 1):\n\nI. An ecosystem is visualised as a functional unit of nature, where living
organisms interact among themselves and also with their surrounding physical
environment.\nII. Ecologists regard the entire biosphere as a global ecosystem, which represents
a composite of all local ecosystems on Earth.\nIII. The global ecosystem is so simple that it is
always studied as a single composite unit at one time.\nIV. Forests, grasslands, and estuaries
represent some natural examples of terrestrial ecosystems.\n\nWhich of the statements given
above are correct according to the NCERT text?
2.Given below are two statements, one is labelled as Assertion (A) and the other is labelled as
Reason (R) (Question 2):\n\nAssertion (A): Vertical distribution of different species occupying
different levels in an forest ecosystem is called stratification.\nReason (R): Species composition
is determined by the identification and enumeration of plant and animal species of an
ecosystem.\n\nIn the light of the above statements, choose the correct answer:
Reason (R) (Question 2):\n\nAssertion (A): Vertical distribution of different species occupying
different levels in an forest ecosystem is called stratification.\nReason (R): Species composition
is determined by the identification and enumeration of plant and animal species of an
ecosystem.\n\nIn the light of the above statements, choose the correct answer:
3.Consider the following statements regarding the structural boundaries of an ecosystem
(Question 3):\n\nI. An ecosystem is visualised as a functional unit of nature, where living
organisms interact among themselves and also with their surrounding physical
environment.\nII. Ecologists regard the entire biosphere as a global ecosystem, which represents
a composite of all local ecosystems on Earth.\nIII. The global ecosystem is so simple that it is
always studied as a single composite unit at one time.\nIV. Forests, grasslands, and estuaries
represent some natural examples of terrestrial ecosystems.\n\nWhich of the statements given
above are correct according to the NCERT text?
(Question 3):\n\nI. An ecosystem is visualised as a functional unit of nature, where living
organisms interact among themselves and also with their surrounding physical
environment.\nII. Ecologists regard the entire biosphere as a global ecosystem, which represents
a composite of all local ecosystems on Earth.\nIII. The global ecosystem is so simple that it is
always studied as a single composite unit at one time.\nIV. Forests, grasslands, and estuaries
represent some natural examples of terrestrial ecosystems.\n\nWhich of the statements given
above are correct according to the NCERT text?
4.Given below are two statements, one is labelled as Assertion (A) and the other is labelled as
Reason (R) (Question 4):\n\nAssertion (A): Vertical distribution of different species occupying
different levels in an forest ecosystem is called stratification.\nReason (R): Species composition
is determined by the identification and enumeration of plant and animal species of an
ecosystem.\n\nIn the light of the above statements, choose the correct answer:
Reason (R) (Question 4):\n\nAssertion (A): Vertical distribution of different species occupying
different levels in an forest ecosystem is called stratification.\nReason (R): Species composition
is determined by the identification and enumeration of plant and animal species of an
ecosystem.\n\nIn the light of the above statements, choose the correct answer:
5.Consider the following statements regarding the structural boundaries of an ecosystem
(Question 5):\n\nI. An ecosystem is visualised as a functional unit of nature, where living
organisms interact among themselves and also with their surrounding physical
environment.\nII. Ecologists regard the entire biosphere as a global ecosystem, which represents
a composite of all local ecosystems on Earth.\nIII. The global ecosystem is so simple that it is
always studied as a single composite unit at one time.\nIV. Forests, grasslands, and estuaries
represent some natural examples of terrestrial ecosystems.\n\nWhich of the statements given
above are correct according to the NCERT text?
(Question 5):\n\nI. An ecosystem is visualised as a functional unit of nature, where living
organisms interact among themselves and also with their surrounding physical
environment.\nII. Ecologists regard the entire biosphere as a global ecosystem, which represents
a composite of all local ecosystems on Earth.\nIII. The global ecosystem is so simple that it is
always studied as a single composite unit at one time.\nIV. Forests, grasslands, and estuaries
represent some natural examples of terrestrial ecosystems.\n\nWhich of the statements given
above are correct according to the NCERT text?
6.Given below are two statements, one is labelled as Assertion (A) and the other is labelled as
Reason (R) (Question 6):\n\nAssertion (A): Vertical distribution of different species occupying
different levels in an forest ecosystem is called stratification.\nReason (R): Species composition
is determined by the identification and enumeration of plant and animal species of an
ecosystem.\n\nIn the light of the above statements, choose the correct answer:
Reason (R) (Question 6):\n\nAssertion (A): Vertical distribution of different species occupying
different levels in an forest ecosystem is called stratification.\nReason (R): Species composition
is determined by the identification and enumeration of plant and animal species of an
ecosystem.\n\nIn the light of the above statements, choose the correct answer:
7.Consider the following statements regarding the structural boundaries of an ecosystem
(Question 7):\n\nI. An ecosystem is visualised as a functional unit of nature, where living
organisms interact among themselves and also with their surrounding physical
environment.\nII. Ecologists regard the entire biosphere as a global ecosystem, which represents
a composite of all local ecosystems on Earth.\nIII. The global ecosystem is so simple that it is
always studied as a single composite unit at one time.\nIV. Forests, grasslands, and estuaries
represent some natural examples of terrestrial ecosystems.\n\nWhich of the statements given
above are correct according to the NCERT text?
(Question 7):\n\nI. An ecosystem is visualised as a functional unit of nature, where living
organisms interact among themselves and also with their surrounding physical
environment.\nII. Ecologists regard the entire biosphere as a global ecosystem, which represents
a composite of all local ecosystems on Earth.\nIII. The global ecosystem is so simple that it is
always studied as a single composite unit at one time.\nIV. Forests, grasslands, and estuaries
represent some natural examples of terrestrial ecosystems.\n\nWhich of the statements given
above are correct according to the NCERT text?
8.Given below are two statements, one is labelled as Assertion (A) and the other is labelled as
Reason (R) (Question 8):\n\nAssertion (A): Vertical distribution of different species occupying
different levels in an forest ecosystem is called stratification.\nReason (R): Species composition
is determined by the identification and enumeration of plant and animal species of an
ecosystem.\n\nIn the light of the above statements, choose the correct answer:
Reason (R) (Question 8):\n\nAssertion (A): Vertical distribution of different species occupying
different levels in an forest ecosystem is called stratification.\nReason (R): Species composition
is determined by the identification and enumeration of plant and animal species of an
ecosystem.\n\nIn the light of the above statements, choose the correct answer:
9.Consider the following statements regarding the structural boundaries of an ecosystem
(Question 9):\n\nI. An ecosystem is visualised as a functional unit of nature, where living
organisms interact among themselves and also with their surrounding physical
environment.\nII. Ecologists regard the entire biosphere as a global ecosystem, which represents
a composite of all local ecosystems on Earth.\nIII. The global ecosystem is so simple that it is
always studied as a single composite unit at one time.\nIV. Forests, grasslands, and estuaries
represent some natural examples of terrestrial ecosystems.\n\nWhich of the statements given
above are correct according to the NCERT text?
(Question 9):\n\nI. An ecosystem is visualised as a functional unit of nature, where living
organisms interact among themselves and also with their surrounding physical
environment.\nII. Ecologists regard the entire biosphere as a global ecosystem, which represents
a composite of all local ecosystems on Earth.\nIII. The global ecosystem is so simple that it is
always studied as a single composite unit at one time.\nIV. Forests, grasslands, and estuaries
represent some natural examples of terrestrial ecosystems.\n\nWhich of the statements given
above are correct according to the NCERT text?
10.Given below are two statements, one is labelled as Assertion (A) and the other is labelled as
Reason (R) (Question 10):\n\nAssertion (A): Vertical distribution of different species occupying
different levels in an forest ecosystem is called stratification.\nReason (R): Species composition
is determined by the identification and enumeration of plant and animal species of an
ecosystem.\n\nIn the light of the above statements, choose the correct answer:
Reason (R) (Question 10):\n\nAssertion (A): Vertical distribution of different species occupying
different levels in an forest ecosystem is called stratification.\nReason (R): Species composition
is determined by the identification and enumeration of plant and animal species of an
ecosystem.\n\nIn the light of the above statements, choose the correct answer:
11.Consider the following statements regarding the structural boundaries of an ecosystem
(Question 11):\n\nI. An ecosystem is visualised as a functional unit of nature, where living
organisms interact among themselves and also with their surrounding physical
environment.\nII. Ecologists regard the entire biosphere as a global ecosystem, which represents
a composite of all local ecosystems on Earth.\nIII. The global ecosystem is so simple that it is
always studied as a single composite unit at one time.\nIV. Forests, grasslands, and estuaries
represent some natural examples of terrestrial ecosystems.\n\nWhich of the statements given
above are correct according to the NCERT text?
(Question 11):\n\nI. An ecosystem is visualised as a functional unit of nature, where living
organisms interact among themselves and also with their surrounding physical
environment.\nII. Ecologists regard the entire biosphere as a global ecosystem, which represents
a composite of all local ecosystems on Earth.\nIII. The global ecosystem is so simple that it is
always studied as a single composite unit at one time.\nIV. Forests, grasslands, and estuaries
represent some natural examples of terrestrial ecosystems.\n\nWhich of the statements given
above are correct according to the NCERT text?
12.Given below are two statements, one is labelled as Assertion (A) and the other is labelled as
Reason (R) (Question 12):\n\nAssertion (A): Vertical distribution of different species occupying
different levels in an forest ecosystem is called stratification.\nReason (R): Species composition
is determined by the identification and enumeration of plant and animal species of an
ecosystem.\n\nIn the light of the above statements, choose the correct answer:
Reason (R) (Question 12):\n\nAssertion (A): Vertical distribution of different species occupying
different levels in an forest ecosystem is called stratification.\nReason (R): Species composition
is determined by the identification and enumeration of plant and animal species of an
ecosystem.\n\nIn the light of the above statements, choose the correct answer:
13.Consider the following statements regarding the structural boundaries of an ecosystem
(Question 13):\n\nI. An ecosystem is visualised as a functional unit of nature, where living
organisms interact among themselves and also with their surrounding physical
environment.\nII. Ecologists regard the entire biosphere as a global ecosystem, which represents
a composite of all local ecosystems on Earth.\nIII. The global ecosystem is so simple that it is
always studied as a single composite unit at one time.\nIV. Forests, grasslands, and estuaries
represent some natural examples of terrestrial ecosystems.\n\nWhich of the statements given
above are correct according to the NCERT text?
(Question 13):\n\nI. An ecosystem is visualised as a functional unit of nature, where living
organisms interact among themselves and also with their surrounding physical
environment.\nII. Ecologists regard the entire biosphere as a global ecosystem, which represents
a composite of all local ecosystems on Earth.\nIII. The global ecosystem is so simple that it is
always studied as a single composite unit at one time.\nIV. Forests, grasslands, and estuaries
represent some natural examples of terrestrial ecosystems.\n\nWhich of the statements given
above are correct according to the NCERT text?
14.Given below are two statements, one is labelled as Assertion (A) and the other is labelled as
Reason (R) (Question 14):\n\nAssertion (A): Vertical distribution of different species occupying
different levels in an forest ecosystem is called stratification.\nReason (R): Species composition
is determined by the identification and enumeration of plant and animal species of an
ecosystem.\n\nIn the light of the above statements, choose the correct answer:
Reason (R) (Question 14):\n\nAssertion (A): Vertical distribution of different species occupying
different levels in an forest ecosystem is called stratification.\nReason (R): Species composition
is determined by the identification and enumeration of plant and animal species of an
ecosystem.\n\nIn the light of the above statements, choose the correct answer:
15.Consider the following statements regarding the structural boundaries of an ecosystem
(Question 15):\n\nI. An ecosystem is visualised as a functional unit of nature, where living
organisms interact among themselves and also with their surrounding physical
environment.\nII. Ecologists regard the entire biosphere as a global ecosystem, which represents
a composite of all local ecosystems on Earth.\nIII. The global ecosystem is so simple that it is
always studied as a single composite unit at one time.\nIV. Forests, grasslands, and estuaries
represent some natural examples of terrestrial ecosystems.\n\nWhich of the statements given
above are correct according to the NCERT text?
(Question 15):\n\nI. An ecosystem is visualised as a functional unit of nature, where living
organisms interact among themselves and also with their surrounding physical
environment.\nII. Ecologists regard the entire biosphere as a global ecosystem, which represents
a composite of all local ecosystems on Earth.\nIII. The global ecosystem is so simple that it is
always studied as a single composite unit at one time.\nIV. Forests, grasslands, and estuaries
represent some natural examples of terrestrial ecosystems.\n\nWhich of the statements given
above are correct according to the NCERT text?
16.Given below are two statements, one is labelled as Assertion (A) and the other is labelled as
Reason (R) (Question 16):\n\nAssertion (A): Vertical distribution of different species occupying
different levels in an forest ecosystem is called stratification.\nReason (R): Species composition
is determined by the identification and enumeration of plant and animal species of an
ecosystem.\n\nIn the light of the above statements, choose the correct answer:
Reason (R) (Question 16):\n\nAssertion (A): Vertical distribution of different species occupying
different levels in an forest ecosystem is called stratification.\nReason (R): Species composition
is determined by the identification and enumeration of plant and animal species of an
ecosystem.\n\nIn the light of the above statements, choose the correct answer:
17.Consider the following statements regarding the structural boundaries of an ecosystem
(Question 17):\n\nI. An ecosystem is visualised as a functional unit of nature, where living
organisms interact among themselves and also with their surrounding physical
environment.\nII. Ecologists regard the entire biosphere as a global ecosystem, which represents
a composite of all local ecosystems on Earth.\nIII. The global ecosystem is so simple that it is
always studied as a single composite unit at one time.\nIV. Forests, grasslands, and estuaries
represent some natural examples of terrestrial ecosystems.\n\nWhich of the statements given
above are correct according to the NCERT text?
(Question 17):\n\nI. An ecosystem is visualised as a functional unit of nature, where living
organisms interact among themselves and also with their surrounding physical
environment.\nII. Ecologists regard the entire biosphere as a global ecosystem, which represents
a composite of all local ecosystems on Earth.\nIII. The global ecosystem is so simple that it is
always studied as a single composite unit at one time.\nIV. Forests, grasslands, and estuaries
represent some natural examples of terrestrial ecosystems.\n\nWhich of the statements given
above are correct according to the NCERT text?
18.Given below are two statements, one is labelled as Assertion (A) and the other is labelled as
Reason (R) (Question 18):\n\nAssertion (A): Vertical distribution of different species occupying
different levels in an forest ecosystem is called stratification.\nReason (R): Species composition
is determined by the identification and enumeration of plant and animal species of an
ecosystem.\n\nIn the light of the above statements, choose the correct answer:
Reason (R) (Question 18):\n\nAssertion (A): Vertical distribution of different species occupying
different levels in an forest ecosystem is called stratification.\nReason (R): Species composition
is determined by the identification and enumeration of plant and animal species of an
ecosystem.\n\nIn the light of the above statements, choose the correct answer:
19.Consider the following statements regarding the structural boundaries of an ecosystem
(Question 19):\n\nI. An ecosystem is visualised as a functional unit of nature, where living
organisms interact among themselves and also with their surrounding physical
environment.\nII. Ecologists regard the entire biosphere as a global ecosystem, which represents
a composite of all local ecosystems on Earth.\nIII. The global ecosystem is so simple that it is
always studied as a single composite unit at one time.\nIV. Forests, grasslands, and estuaries
represent some natural examples of terrestrial ecosystems.\n\nWhich of the statements given
above are correct according to the NCERT text?
(Question 19):\n\nI. An ecosystem is visualised as a functional unit of nature, where living
organisms interact among themselves and also with their surrounding physical
environment.\nII. Ecologists regard the entire biosphere as a global ecosystem, which represents
a composite of all local ecosystems on Earth.\nIII. The global ecosystem is so simple that it is
always studied as a single composite unit at one time.\nIV. Forests, grasslands, and estuaries
represent some natural examples of terrestrial ecosystems.\n\nWhich of the statements given
above are correct according to the NCERT text?
20.Given below are two statements, one is labelled as Assertion (A) and the other is labelled as
Reason (R) (Question 20):\n\nAssertion (A): Vertical distribution of different species occupying
different levels in an forest ecosystem is called stratification.\nReason (R): Species composition
is determined by the identification and enumeration of plant and animal species of an
ecosystem.\n\nIn the light of the above statements, choose the correct answer:
Reason (R) (Question 20):\n\nAssertion (A): Vertical distribution of different species occupying
different levels in an forest ecosystem is called stratification.\nReason (R): Species composition
is determined by the identification and enumeration of plant and animal species of an
ecosystem.\n\nIn the light of the above statements, choose the correct answer:
21.Consider the following statements regarding the structural boundaries of an ecosystem
(Question 21):\n\nI. An ecosystem is visualised as a functional unit of nature, where living
organisms interact among themselves and also with their surrounding physical
environment.\nII. Ecologists regard the entire biosphere as a global ecosystem, which represents
a composite of all local ecosystems on Earth.\nIII. The global ecosystem is so simple that it is
always studied as a single composite unit at one time.\nIV. Forests, grasslands, and estuaries
represent some natural examples of terrestrial ecosystems.\n\nWhich of the statements given
above are correct according to the NCERT text?
(Question 21):\n\nI. An ecosystem is visualised as a functional unit of nature, where living
organisms interact among themselves and also with their surrounding physical
environment.\nII. Ecologists regard the entire biosphere as a global ecosystem, which represents
a composite of all local ecosystems on Earth.\nIII. The global ecosystem is so simple that it is
always studied as a single composite unit at one time.\nIV. Forests, grasslands, and estuaries
represent some natural examples of terrestrial ecosystems.\n\nWhich of the statements given
above are correct according to the NCERT text?
22.Given below are two statements, one is labelled as Assertion (A) and the other is labelled as
Reason (R) (Question 22):\n\nAssertion (A): Vertical distribution of different species occupying
different levels in an forest ecosystem is called stratification.\nReason (R): Species composition
is determined by the identification and enumeration of plant and animal species of an
ecosystem.\n\nIn the light of the above statements, choose the correct answer:
Reason (R) (Question 22):\n\nAssertion (A): Vertical distribution of different species occupying
different levels in an forest ecosystem is called stratification.\nReason (R): Species composition
is determined by the identification and enumeration of plant and animal species of an
ecosystem.\n\nIn the light of the above statements, choose the correct answer:
23.Consider the following statements regarding the structural boundaries of an ecosystem
(Question 23):\n\nI. An ecosystem is visualised as a functional unit of nature, where living
organisms interact among themselves and also with their surrounding physical
environment.\nII. Ecologists regard the entire biosphere as a global ecosystem, which represents
a composite of all local ecosystems on Earth.\nIII. The global ecosystem is so simple that it is
always studied as a single composite unit at one time.\nIV. Forests, grasslands, and estuaries
represent some natural examples of terrestrial ecosystems.\n\nWhich of the statements given
above are correct according to the NCERT text?
(Question 23):\n\nI. An ecosystem is visualised as a functional unit of nature, where living
organisms interact among themselves and also with their surrounding physical
environment.\nII. Ecologists regard the entire biosphere as a global ecosystem, which represents
a composite of all local ecosystems on Earth.\nIII. The global ecosystem is so simple that it is
always studied as a single composite unit at one time.\nIV. Forests, grasslands, and estuaries
represent some natural examples of terrestrial ecosystems.\n\nWhich of the statements given
above are correct according to the NCERT text?
24.Given below are two statements, one is labelled as Assertion (A) and the other is labelled as
Reason (R) (Question 24):\n\nAssertion (A): Vertical distribution of different species occupying
different levels in an forest ecosystem is called stratification.\nReason (R): Species composition
is determined by the identification and enumeration of plant and animal species of an
ecosystem.\n\nIn the light of the above statements, choose the correct answer:
Reason (R) (Question 24):\n\nAssertion (A): Vertical distribution of different species occupying
different levels in an forest ecosystem is called stratification.\nReason (R): Species composition
is determined by the identification and enumeration of plant and animal species of an
ecosystem.\n\nIn the light of the above statements, choose the correct answer:
25.Consider the following statements regarding the structural boundaries of an ecosystem
(Question 25):\n\nI. An ecosystem is visualised as a functional unit of nature, where living
organisms interact among themselves and also with their surrounding physical
environment.\nII. Ecologists regard the entire biosphere as a global ecosystem, which represents
a composite of all local ecosystems on Earth.\nIII. The global ecosystem is so simple that it is
always studied as a single composite unit at one time.\nIV. Forests, grasslands, and estuaries
represent some natural examples of terrestrial ecosystems.\n\nWhich of the statements given
above are correct according to the NCERT text?
(Question 25):\n\nI. An ecosystem is visualised as a functional unit of nature, where living
organisms interact among themselves and also with their surrounding physical
environment.\nII. Ecologists regard the entire biosphere as a global ecosystem, which represents
a composite of all local ecosystems on Earth.\nIII. The global ecosystem is so simple that it is
always studied as a single composite unit at one time.\nIV. Forests, grasslands, and estuaries
represent some natural examples of terrestrial ecosystems.\n\nWhich of the statements given
above are correct according to the NCERT text?
26.Given below are two statements, one is labelled as Assertion (A) and the other is labelled as
Reason (R) (Question 26):\n\nAssertion (A): Vertical distribution of different species occupying
different levels in an forest ecosystem is called stratification.\nReason (R): Species composition
is determined by the identification and enumeration of plant and animal species of an
ecosystem.\n\nIn the light of the above statements, choose the correct answer:
Reason (R) (Question 26):\n\nAssertion (A): Vertical distribution of different species occupying
different levels in an forest ecosystem is called stratification.\nReason (R): Species composition
is determined by the identification and enumeration of plant and animal species of an
ecosystem.\n\nIn the light of the above statements, choose the correct answer:
27.Consider the following statements regarding the structural boundaries of an ecosystem
(Question 27):\n\nI. An ecosystem is visualised as a functional unit of nature, where living
organisms interact among themselves and also with their surrounding physical
environment.\nII. Ecologists regard the entire biosphere as a global ecosystem, which represents
a composite of all local ecosystems on Earth.\nIII. The global ecosystem is so simple that it is
always studied as a single composite unit at one time.\nIV. Forests, grasslands, and estuaries
represent some natural examples of terrestrial ecosystems.\n\nWhich of the statements given
above are correct according to the NCERT text?
(Question 27):\n\nI. An ecosystem is visualised as a functional unit of nature, where living
organisms interact among themselves and also with their surrounding physical
environment.\nII. Ecologists regard the entire biosphere as a global ecosystem, which represents
a composite of all local ecosystems on Earth.\nIII. The global ecosystem is so simple that it is
always studied as a single composite unit at one time.\nIV. Forests, grasslands, and estuaries
represent some natural examples of terrestrial ecosystems.\n\nWhich of the statements given
above are correct according to the NCERT text?
28.Given below are two statements, one is labelled as Assertion (A) and the other is labelled as
Reason (R) (Question 28):\n\nAssertion (A): Vertical distribution of different species occupying
different levels in an forest ecosystem is called stratification.\nReason (R): Species composition
is determined by the identification and enumeration of plant and animal species of an
ecosystem.\n\nIn the light of the above statements, choose the correct answer:
Reason (R) (Question 28):\n\nAssertion (A): Vertical distribution of different species occupying
different levels in an forest ecosystem is called stratification.\nReason (R): Species composition
is determined by the identification and enumeration of plant and animal species of an
ecosystem.\n\nIn the light of the above statements, choose the correct answer:
29.Consider the following statements regarding the structural boundaries of an ecosystem
(Question 29):\n\nI. An ecosystem is visualised as a functional unit of nature, where living
organisms interact among themselves and also with their surrounding physical
environment.\nII. Ecologists regard the entire biosphere as a global ecosystem, which represents
a composite of all local ecosystems on Earth.\nIII. The global ecosystem is so simple that it is
always studied as a single composite unit at one time.\nIV. Forests, grasslands, and estuaries
represent some natural examples of terrestrial ecosystems.\n\nWhich of the statements given
above are correct according to the NCERT text?
(Question 29):\n\nI. An ecosystem is visualised as a functional unit of nature, where living
organisms interact among themselves and also with their surrounding physical
environment.\nII. Ecologists regard the entire biosphere as a global ecosystem, which represents
a composite of all local ecosystems on Earth.\nIII. The global ecosystem is so simple that it is
always studied as a single composite unit at one time.\nIV. Forests, grasslands, and estuaries
represent some natural examples of terrestrial ecosystems.\n\nWhich of the statements given
above are correct according to the NCERT text?
30.Given below are two statements, one is labelled as Assertion (A) and the other is labelled as
Reason (R) (Question 30):\n\nAssertion (A): Vertical distribution of different species occupying
different levels in an forest ecosystem is called stratification.\nReason (R): Species composition
is determined by the identification and enumeration of plant and animal species of an
ecosystem.\n\nIn the light of the above statements, choose the correct answer:
Reason (R) (Question 30):\n\nAssertion (A): Vertical distribution of different species occupying
different levels in an forest ecosystem is called stratification.\nReason (R): Species composition
is determined by the identification and enumeration of plant and animal species of an
ecosystem.\n\nIn the light of the above statements, choose the correct answer:
31.Consider the following statements regarding the autotrophic and consumer components of
a pond ecosystem (Question 31):\n\nI. The autotrophic components include phytoplankton,
some algae, and floating, submerged, and marginal plants found at the edges.\nII. The
consumers are represented by zooplankton, free-swimming, and bottom-dwelling forms.\nIII.
The decomposers are fungi, bacteria, and flagellates especially abundant in the bottom of the
pond.\nIV. Solar input, cycle of temperature, and day-length have no regulating effect on the
pond functions.\n\nWhich of the statements given above are correct according to the NCERT
text?
a pond ecosystem (Question 31):\n\nI. The autotrophic components include phytoplankton,
some algae, and floating, submerged, and marginal plants found at the edges.\nII. The
consumers are represented by zooplankton, free-swimming, and bottom-dwelling forms.\nIII.
The decomposers are fungi, bacteria, and flagellates especially abundant in the bottom of the
pond.\nIV. Solar input, cycle of temperature, and day-length have no regulating effect on the
pond functions.\n\nWhich of the statements given above are correct according to the NCERT
text?
32.Given below are two statements, one is labelled as Assertion (A) and the other is labelled as
Reason (R) (Question 32):\n\nAssertion (A): The rate of biomass production is called
productivity, expressed in gm-2\ yr-1 or (kcal\ m-2)\ yr-1.\nReason (R): Primary production is
defined as the amount of biomass or organic matter produced per unit area by plants during
photosynthesis.\n\nIn the light of the above statements, choose the correct answer:
Reason (R) (Question 32):\n\nAssertion (A): The rate of biomass production is called
productivity, expressed in gm-2\ yr-1 or (kcal\ m-2)\ yr-1.\nReason (R): Primary production is
defined as the amount of biomass or organic matter produced per unit area by plants during
photosynthesis.\n\nIn the light of the above statements, choose the correct answer:
33.Consider the following statements regarding the autotrophic and consumer components of
a pond ecosystem (Question 33):\n\nI. The autotrophic components include phytoplankton,
some algae, and floating, submerged, and marginal plants found at the edges.\nII. The
consumers are represented by zooplankton, free-swimming, and bottom-dwelling forms.\nIII.
The decomposers are fungi, bacteria, and flagellates especially abundant in the bottom of the
pond.\nIV. Solar input, cycle of temperature, and day-length have no regulating effect on the
pond functions.\n\nWhich of the statements given above are correct according to the NCERT
text?
a pond ecosystem (Question 33):\n\nI. The autotrophic components include phytoplankton,
some algae, and floating, submerged, and marginal plants found at the edges.\nII. The
consumers are represented by zooplankton, free-swimming, and bottom-dwelling forms.\nIII.
The decomposers are fungi, bacteria, and flagellates especially abundant in the bottom of the
pond.\nIV. Solar input, cycle of temperature, and day-length have no regulating effect on the
pond functions.\n\nWhich of the statements given above are correct according to the NCERT
text?
34.Given below are two statements, one is labelled as Assertion (A) and the other is labelled as
Reason (R) (Question 34):\n\nAssertion (A): The rate of biomass production is called
productivity, expressed in gm-2\ yr-1 or (kcal\ m-2)\ yr-1.\nReason (R): Primary production is
defined as the amount of biomass or organic matter produced per unit area by plants during
photosynthesis.\n\nIn the light of the above statements, choose the correct answer:
Reason (R) (Question 34):\n\nAssertion (A): The rate of biomass production is called
productivity, expressed in gm-2\ yr-1 or (kcal\ m-2)\ yr-1.\nReason (R): Primary production is
defined as the amount of biomass or organic matter produced per unit area by plants during
photosynthesis.\n\nIn the light of the above statements, choose the correct answer:
35.Consider the following statements regarding the autotrophic and consumer components of
a pond ecosystem (Question 35):\n\nI. The autotrophic components include phytoplankton,
some algae, and floating, submerged, and marginal plants found at the edges.\nII. The
consumers are represented by zooplankton, free-swimming, and bottom-dwelling forms.\nIII.
The decomposers are fungi, bacteria, and flagellates especially abundant in the bottom of the
pond.\nIV. Solar input, cycle of temperature, and day-length have no regulating effect on the
pond functions.\n\nWhich of the statements given above are correct according to the NCERT
text?
a pond ecosystem (Question 35):\n\nI. The autotrophic components include phytoplankton,
some algae, and floating, submerged, and marginal plants found at the edges.\nII. The
consumers are represented by zooplankton, free-swimming, and bottom-dwelling forms.\nIII.
The decomposers are fungi, bacteria, and flagellates especially abundant in the bottom of the
pond.\nIV. Solar input, cycle of temperature, and day-length have no regulating effect on the
pond functions.\n\nWhich of the statements given above are correct according to the NCERT
text?
36.Given below are two statements, one is labelled as Assertion (A) and the other is labelled as
Reason (R) (Question 36):\n\nAssertion (A): The rate of biomass production is called
productivity, expressed in gm-2\ yr-1 or (kcal\ m-2)\ yr-1.\nReason (R): Primary production is
defined as the amount of biomass or organic matter produced per unit area by plants during
photosynthesis.\n\nIn the light of the above statements, choose the correct answer:
Reason (R) (Question 36):\n\nAssertion (A): The rate of biomass production is called
productivity, expressed in gm-2\ yr-1 or (kcal\ m-2)\ yr-1.\nReason (R): Primary production is
defined as the amount of biomass or organic matter produced per unit area by plants during
photosynthesis.\n\nIn the light of the above statements, choose the correct answer:
37.Consider the following statements regarding the autotrophic and consumer components of
a pond ecosystem (Question 37):\n\nI. The autotrophic components include phytoplankton,
some algae, and floating, submerged, and marginal plants found at the edges.\nII. The
consumers are represented by zooplankton, free-swimming, and bottom-dwelling forms.\nIII.
The decomposers are fungi, bacteria, and flagellates especially abundant in the bottom of the
pond.\nIV. Solar input, cycle of temperature, and day-length have no regulating effect on the
pond functions.\n\nWhich of the statements given above are correct according to the NCERT
text?
a pond ecosystem (Question 37):\n\nI. The autotrophic components include phytoplankton,
some algae, and floating, submerged, and marginal plants found at the edges.\nII. The
consumers are represented by zooplankton, free-swimming, and bottom-dwelling forms.\nIII.
The decomposers are fungi, bacteria, and flagellates especially abundant in the bottom of the
pond.\nIV. Solar input, cycle of temperature, and day-length have no regulating effect on the
pond functions.\n\nWhich of the statements given above are correct according to the NCERT
text?
38.Given below are two statements, one is labelled as Assertion (A) and the other is labelled as
Reason (R) (Question 38):\n\nAssertion (A): The rate of biomass production is called
productivity, expressed in gm-2\ yr-1 or (kcal\ m-2)\ yr-1.\nReason (R): Primary production is
defined as the amount of biomass or organic matter produced per unit area by plants during
photosynthesis.\n\nIn the light of the above statements, choose the correct answer:
Reason (R) (Question 38):\n\nAssertion (A): The rate of biomass production is called
productivity, expressed in gm-2\ yr-1 or (kcal\ m-2)\ yr-1.\nReason (R): Primary production is
defined as the amount of biomass or organic matter produced per unit area by plants during
photosynthesis.\n\nIn the light of the above statements, choose the correct answer:
39.Consider the following statements regarding the autotrophic and consumer components of
a pond ecosystem (Question 39):\n\nI. The autotrophic components include phytoplankton,
some algae, and floating, submerged, and marginal plants found at the edges.\nII. The
consumers are represented by zooplankton, free-swimming, and bottom-dwelling forms.\nIII.
The decomposers are fungi, bacteria, and flagellates especially abundant in the bottom of the
pond.\nIV. Solar input, cycle of temperature, and day-length have no regulating effect on the
pond functions.\n\nWhich of the statements given above are correct according to the NCERT
text?
a pond ecosystem (Question 39):\n\nI. The autotrophic components include phytoplankton,
some algae, and floating, submerged, and marginal plants found at the edges.\nII. The
consumers are represented by zooplankton, free-swimming, and bottom-dwelling forms.\nIII.
The decomposers are fungi, bacteria, and flagellates especially abundant in the bottom of the
pond.\nIV. Solar input, cycle of temperature, and day-length have no regulating effect on the
pond functions.\n\nWhich of the statements given above are correct according to the NCERT
text?
40.Given below are two statements, one is labelled as Assertion (A) and the other is labelled as
Reason (R) (Question 40):\n\nAssertion (A): The rate of biomass production is called
productivity, expressed in gm-2\ yr-1 or (kcal\ m-2)\ yr-1.\nReason (R): Primary production is
defined as the amount of biomass or organic matter produced per unit area by plants during
photosynthesis.\n\nIn the light of the above statements, choose the correct answer:
Reason (R) (Question 40):\n\nAssertion (A): The rate of biomass production is called
productivity, expressed in gm-2\ yr-1 or (kcal\ m-2)\ yr-1.\nReason (R): Primary production is
defined as the amount of biomass or organic matter produced per unit area by plants during
photosynthesis.\n\nIn the light of the above statements, choose the correct answer:
41.Consider the following statements regarding the autotrophic and consumer components of
a pond ecosystem (Question 41):\n\nI. The autotrophic components include phytoplankton,
some algae, and floating, submerged, and marginal plants found at the edges.\nII. The
consumers are represented by zooplankton, free-swimming, and bottom-dwelling forms.\nIII.
The decomposers are fungi, bacteria, and flagellates especially abundant in the bottom of the
pond.\nIV. Solar input, cycle of temperature, and day-length have no regulating effect on the
pond functions.\n\nWhich of the statements given above are correct according to the NCERT
text?
a pond ecosystem (Question 41):\n\nI. The autotrophic components include phytoplankton,
some algae, and floating, submerged, and marginal plants found at the edges.\nII. The
consumers are represented by zooplankton, free-swimming, and bottom-dwelling forms.\nIII.
The decomposers are fungi, bacteria, and flagellates especially abundant in the bottom of the
pond.\nIV. Solar input, cycle of temperature, and day-length have no regulating effect on the
pond functions.\n\nWhich of the statements given above are correct according to the NCERT
text?
42.Given below are two statements, one is labelled as Assertion (A) and the other is labelled as
Reason (R) (Question 42):\n\nAssertion (A): The rate of biomass production is called
productivity, expressed in gm-2\ yr-1 or (kcal\ m-2)\ yr-1.\nReason (R): Primary production is
defined as the amount of biomass or organic matter produced per unit area by plants during
photosynthesis.\n\nIn the light of the above statements, choose the correct answer:
Reason (R) (Question 42):\n\nAssertion (A): The rate of biomass production is called
productivity, expressed in gm-2\ yr-1 or (kcal\ m-2)\ yr-1.\nReason (R): Primary production is
defined as the amount of biomass or organic matter produced per unit area by plants during
photosynthesis.\n\nIn the light of the above statements, choose the correct answer:
43.Consider the following statements regarding the autotrophic and consumer components of
a pond ecosystem (Question 43):\n\nI. The autotrophic components include phytoplankton,
some algae, and floating, submerged, and marginal plants found at the edges.\nII. The
consumers are represented by zooplankton, free-swimming, and bottom-dwelling forms.\nIII.
The decomposers are fungi, bacteria, and flagellates especially abundant in the bottom of the
pond.\nIV. Solar input, cycle of temperature, and day-length have no regulating effect on the
pond functions.\n\nWhich of the statements given above are correct according to the NCERT
text?
a pond ecosystem (Question 43):\n\nI. The autotrophic components include phytoplankton,
some algae, and floating, submerged, and marginal plants found at the edges.\nII. The
consumers are represented by zooplankton, free-swimming, and bottom-dwelling forms.\nIII.
The decomposers are fungi, bacteria, and flagellates especially abundant in the bottom of the
pond.\nIV. Solar input, cycle of temperature, and day-length have no regulating effect on the
pond functions.\n\nWhich of the statements given above are correct according to the NCERT
text?
44.Given below are two statements, one is labelled as Assertion (A) and the other is labelled as
Reason (R) (Question 44):\n\nAssertion (A): The rate of biomass production is called
productivity, expressed in gm-2\ yr-1 or (kcal\ m-2)\ yr-1.\nReason (R): Primary production is
defined as the amount of biomass or organic matter produced per unit area by plants during
photosynthesis.\n\nIn the light of the above statements, choose the correct answer:
Reason (R) (Question 44):\n\nAssertion (A): The rate of biomass production is called
productivity, expressed in gm-2\ yr-1 or (kcal\ m-2)\ yr-1.\nReason (R): Primary production is
defined as the amount of biomass or organic matter produced per unit area by plants during
photosynthesis.\n\nIn the light of the above statements, choose the correct answer:
45.Consider the following statements regarding the autotrophic and consumer components of
a pond ecosystem (Question 45):\n\nI. The autotrophic components include phytoplankton,
some algae, and floating, submerged, and marginal plants found at the edges.\nII. The
consumers are represented by zooplankton, free-swimming, and bottom-dwelling forms.\nIII.
The decomposers are fungi, bacteria, and flagellates especially abundant in the bottom of the
pond.\nIV. Solar input, cycle of temperature, and day-length have no regulating effect on the
pond functions.\n\nWhich of the statements given above are correct according to the NCERT
text?
a pond ecosystem (Question 45):\n\nI. The autotrophic components include phytoplankton,
some algae, and floating, submerged, and marginal plants found at the edges.\nII. The
consumers are represented by zooplankton, free-swimming, and bottom-dwelling forms.\nIII.
The decomposers are fungi, bacteria, and flagellates especially abundant in the bottom of the
pond.\nIV. Solar input, cycle of temperature, and day-length have no regulating effect on the
pond functions.\n\nWhich of the statements given above are correct according to the NCERT
text?
46.Given below are two statements, one is labelled as Assertion (A) and the other is labelled as
Reason (R) (Question 46):\n\nAssertion (A): The rate of biomass production is called
productivity, expressed in gm-2\ yr-1 or (kcal\ m-2)\ yr-1.\nReason (R): Primary production is
defined as the amount of biomass or organic matter produced per unit area by plants during
photosynthesis.\n\nIn the light of the above statements, choose the correct answer:
Reason (R) (Question 46):\n\nAssertion (A): The rate of biomass production is called
productivity, expressed in gm-2\ yr-1 or (kcal\ m-2)\ yr-1.\nReason (R): Primary production is
defined as the amount of biomass or organic matter produced per unit area by plants during
photosynthesis.\n\nIn the light of the above statements, choose the correct answer:
47.Consider the following statements regarding the autotrophic and consumer components of
a pond ecosystem (Question 47):\n\nI. The autotrophic components include phytoplankton,
some algae, and floating, submerged, and marginal plants found at the edges.\nII. The
consumers are represented by zooplankton, free-swimming, and bottom-dwelling forms.\nIII.
The decomposers are fungi, bacteria, and flagellates especially abundant in the bottom of the
pond.\nIV. Solar input, cycle of temperature, and day-length have no regulating effect on the
pond functions.\n\nWhich of the statements given above are correct according to the NCERT
text?
a pond ecosystem (Question 47):\n\nI. The autotrophic components include phytoplankton,
some algae, and floating, submerged, and marginal plants found at the edges.\nII. The
consumers are represented by zooplankton, free-swimming, and bottom-dwelling forms.\nIII.
The decomposers are fungi, bacteria, and flagellates especially abundant in the bottom of the
pond.\nIV. Solar input, cycle of temperature, and day-length have no regulating effect on the
pond functions.\n\nWhich of the statements given above are correct according to the NCERT
text?
48.Given below are two statements, one is labelled as Assertion (A) and the other is labelled as
Reason (R) (Question 48):\n\nAssertion (A): The rate of biomass production is called
productivity, expressed in gm-2\ yr-1 or (kcal\ m-2)\ yr-1.\nReason (R): Primary production is
defined as the amount of biomass or organic matter produced per unit area by plants during
photosynthesis.\n\nIn the light of the above statements, choose the correct answer:
Reason (R) (Question 48):\n\nAssertion (A): The rate of biomass production is called
productivity, expressed in gm-2\ yr-1 or (kcal\ m-2)\ yr-1.\nReason (R): Primary production is
defined as the amount of biomass or organic matter produced per unit area by plants during
photosynthesis.\n\nIn the light of the above statements, choose the correct answer:
49.Consider the following statements regarding the autotrophic and consumer components of
a pond ecosystem (Question 49):\n\nI. The autotrophic components include phytoplankton,
some algae, and floating, submerged, and marginal plants found at the edges.\nII. The
consumers are represented by zooplankton, free-swimming, and bottom-dwelling forms.\nIII.
The decomposers are fungi, bacteria, and flagellates especially abundant in the bottom of the
pond.\nIV. Solar input, cycle of temperature, and day-length have no regulating effect on the
pond functions.\n\nWhich of the statements given above are correct according to the NCERT
text?
a pond ecosystem (Question 49):\n\nI. The autotrophic components include phytoplankton,
some algae, and floating, submerged, and marginal plants found at the edges.\nII. The
consumers are represented by zooplankton, free-swimming, and bottom-dwelling forms.\nIII.
The decomposers are fungi, bacteria, and flagellates especially abundant in the bottom of the
pond.\nIV. Solar input, cycle of temperature, and day-length have no regulating effect on the
pond functions.\n\nWhich of the statements given above are correct according to the NCERT
text?
50.Given below are two statements, one is labelled as Assertion (A) and the other is labelled as
Reason (R) (Question 50):\n\nAssertion (A): The rate of biomass production is called
productivity, expressed in gm-2\ yr-1 or (kcal\ m-2)\ yr-1.\nReason (R): Primary production is
defined as the amount of biomass or organic matter produced per unit area by plants during
photosynthesis.\n\nIn the light of the above statements, choose the correct answer:
Reason (R) (Question 50):\n\nAssertion (A): The rate of biomass production is called
productivity, expressed in gm-2\ yr-1 or (kcal\ m-2)\ yr-1.\nReason (R): Primary production is
defined as the amount of biomass or organic matter produced per unit area by plants during
photosynthesis.\n\nIn the light of the above statements, choose the correct answer:
51.Consider the following statements regarding the autotrophic and consumer components of
a pond ecosystem (Question 51):\n\nI. The autotrophic components include phytoplankton,
some algae, and floating, submerged, and marginal plants found at the edges.\nII. The
consumers are represented by zooplankton, free-swimming, and bottom-dwelling forms.\nIII.
The decomposers are fungi, bacteria, and flagellates especially abundant in the bottom of the
pond.\nIV. Solar input, cycle of temperature, and day-length have no regulating effect on the
pond functions.\n\nWhich of the statements given above are correct according to the NCERT
text?
a pond ecosystem (Question 51):\n\nI. The autotrophic components include phytoplankton,
some algae, and floating, submerged, and marginal plants found at the edges.\nII. The
consumers are represented by zooplankton, free-swimming, and bottom-dwelling forms.\nIII.
The decomposers are fungi, bacteria, and flagellates especially abundant in the bottom of the
pond.\nIV. Solar input, cycle of temperature, and day-length have no regulating effect on the
pond functions.\n\nWhich of the statements given above are correct according to the NCERT
text?
52.Given below are two statements, one is labelled as Assertion (A) and the other is labelled as
Reason (R) (Question 52):\n\nAssertion (A): The rate of biomass production is called
productivity, expressed in gm-2\ yr-1 or (kcal\ m-2)\ yr-1.\nReason (R): Primary production is
defined as the amount of biomass or organic matter produced per unit area by plants during
photosynthesis.\n\nIn the light of the above statements, choose the correct answer:
Reason (R) (Question 52):\n\nAssertion (A): The rate of biomass production is called
productivity, expressed in gm-2\ yr-1 or (kcal\ m-2)\ yr-1.\nReason (R): Primary production is
defined as the amount of biomass or organic matter produced per unit area by plants during
photosynthesis.\n\nIn the light of the above statements, choose the correct answer:
53.Consider the following statements regarding the autotrophic and consumer components of
a pond ecosystem (Question 53):\n\nI. The autotrophic components include phytoplankton,
some algae, and floating, submerged, and marginal plants found at the edges.\nII. The
consumers are represented by zooplankton, free-swimming, and bottom-dwelling forms.\nIII.
The decomposers are fungi, bacteria, and flagellates especially abundant in the bottom of the
pond.\nIV. Solar input, cycle of temperature, and day-length have no regulating effect on the
pond functions.\n\nWhich of the statements given above are correct according to the NCERT
text?
a pond ecosystem (Question 53):\n\nI. The autotrophic components include phytoplankton,
some algae, and floating, submerged, and marginal plants found at the edges.\nII. The
consumers are represented by zooplankton, free-swimming, and bottom-dwelling forms.\nIII.
The decomposers are fungi, bacteria, and flagellates especially abundant in the bottom of the
pond.\nIV. Solar input, cycle of temperature, and day-length have no regulating effect on the
pond functions.\n\nWhich of the statements given above are correct according to the NCERT
text?
54.Given below are two statements, one is labelled as Assertion (A) and the other is labelled as
Reason (R) (Question 54):\n\nAssertion (A): The rate of biomass production is called
productivity, expressed in gm-2\ yr-1 or (kcal\ m-2)\ yr-1.\nReason (R): Primary production is
defined as the amount of biomass or organic matter produced per unit area by plants during
photosynthesis.\n\nIn the light of the above statements, choose the correct answer:
Reason (R) (Question 54):\n\nAssertion (A): The rate of biomass production is called
productivity, expressed in gm-2\ yr-1 or (kcal\ m-2)\ yr-1.\nReason (R): Primary production is
defined as the amount of biomass or organic matter produced per unit area by plants during
photosynthesis.\n\nIn the light of the above statements, choose the correct answer:
55.Consider the following statements regarding the autotrophic and consumer components of
a pond ecosystem (Question 55):\n\nI. The autotrophic components include phytoplankton,
some algae, and floating, submerged, and marginal plants found at the edges.\nII. The
consumers are represented by zooplankton, free-swimming, and bottom-dwelling forms.\nIII.
The decomposers are fungi, bacteria, and flagellates especially abundant in the bottom of the
pond.\nIV. Solar input, cycle of temperature, and day-length have no regulating effect on the
pond functions.\n\nWhich of the statements given above are correct according to the NCERT
text?
a pond ecosystem (Question 55):\n\nI. The autotrophic components include phytoplankton,
some algae, and floating, submerged, and marginal plants found at the edges.\nII. The
consumers are represented by zooplankton, free-swimming, and bottom-dwelling forms.\nIII.
The decomposers are fungi, bacteria, and flagellates especially abundant in the bottom of the
pond.\nIV. Solar input, cycle of temperature, and day-length have no regulating effect on the
pond functions.\n\nWhich of the statements given above are correct according to the NCERT
text?
56.Given below are two statements, one is labelled as Assertion (A) and the other is labelled as
Reason (R) (Question 56):\n\nAssertion (A): The rate of biomass production is called
productivity, expressed in gm-2\ yr-1 or (kcal\ m-2)\ yr-1.\nReason (R): Primary production is
defined as the amount of biomass or organic matter produced per unit area by plants during
photosynthesis.\n\nIn the light of the above statements, choose the correct answer:
Reason (R) (Question 56):\n\nAssertion (A): The rate of biomass production is called
productivity, expressed in gm-2\ yr-1 or (kcal\ m-2)\ yr-1.\nReason (R): Primary production is
defined as the amount of biomass or organic matter produced per unit area by plants during
photosynthesis.\n\nIn the light of the above statements, choose the correct answer:
57.Consider the following statements regarding the autotrophic and consumer components of
a pond ecosystem (Question 57):\n\nI. The autotrophic components include phytoplankton,
some algae, and floating, submerged, and marginal plants found at the edges.\nII. The
consumers are represented by zooplankton, free-swimming, and bottom-dwelling forms.\nIII.
The decomposers are fungi, bacteria, and flagellates especially abundant in the bottom of the
pond.\nIV. Solar input, cycle of temperature, and day-length have no regulating effect on the
pond functions.\n\nWhich of the statements given above are correct according to the NCERT
text?
a pond ecosystem (Question 57):\n\nI. The autotrophic components include phytoplankton,
some algae, and floating, submerged, and marginal plants found at the edges.\nII. The
consumers are represented by zooplankton, free-swimming, and bottom-dwelling forms.\nIII.
The decomposers are fungi, bacteria, and flagellates especially abundant in the bottom of the
pond.\nIV. Solar input, cycle of temperature, and day-length have no regulating effect on the
pond functions.\n\nWhich of the statements given above are correct according to the NCERT
text?
58.Given below are two statements, one is labelled as Assertion (A) and the other is labelled as
Reason (R) (Question 58):\n\nAssertion (A): The rate of biomass production is called
productivity, expressed in gm-2\ yr-1 or (kcal\ m-2)\ yr-1.\nReason (R): Primary production is
defined as the amount of biomass or organic matter produced per unit area by plants during
photosynthesis.\n\nIn the light of the above statements, choose the correct answer:
Reason (R) (Question 58):\n\nAssertion (A): The rate of biomass production is called
productivity, expressed in gm-2\ yr-1 or (kcal\ m-2)\ yr-1.\nReason (R): Primary production is
defined as the amount of biomass or organic matter produced per unit area by plants during
photosynthesis.\n\nIn the light of the above statements, choose the correct answer:
59.Consider the following statements regarding the autotrophic and consumer components of
a pond ecosystem (Question 59):\n\nI. The autotrophic components include phytoplankton,
some algae, and floating, submerged, and marginal plants found at the edges.\nII. The
consumers are represented by zooplankton, free-swimming, and bottom-dwelling forms.\nIII.
The decomposers are fungi, bacteria, and flagellates especially abundant in the bottom of the
pond.\nIV. Solar input, cycle of temperature, and day-length have no regulating effect on the
pond functions.\n\nWhich of the statements given above are correct according to the NCERT
text?
a pond ecosystem (Question 59):\n\nI. The autotrophic components include phytoplankton,
some algae, and floating, submerged, and marginal plants found at the edges.\nII. The
consumers are represented by zooplankton, free-swimming, and bottom-dwelling forms.\nIII.
The decomposers are fungi, bacteria, and flagellates especially abundant in the bottom of the
pond.\nIV. Solar input, cycle of temperature, and day-length have no regulating effect on the
pond functions.\n\nWhich of the statements given above are correct according to the NCERT
text?
60.Given below are two statements, one is labelled as Assertion (A) and the other is labelled as
Reason (R) (Question 60):\n\nAssertion (A): The rate of biomass production is called
productivity, expressed in gm-2\ yr-1 or (kcal\ m-2)\ yr-1.\nReason (R): Primary production is
defined as the amount of biomass or organic matter produced per unit area by plants during
photosynthesis.\n\nIn the light of the above statements, choose the correct answer:
Reason (R) (Question 60):\n\nAssertion (A): The rate of biomass production is called
productivity, expressed in gm-2\ yr-1 or (kcal\ m-2)\ yr-1.\nReason (R): Primary production is
defined as the amount of biomass or organic matter produced per unit area by plants during
photosynthesis.\n\nIn the light of the above statements, choose the correct answer:
61.Consider the following statements regarding Gross and Net Primary Productivity of
ecosystems (Question 61):\n\nI. Gross primary productivity (GPP) is the rate of production of
organic matter during photosynthesis.\nII. Net primary productivity (NPP) is GPP minus
respiration losses (R), i.e., GPP - R = NPP.\nIII. The annual net primary productivity of the
whole biosphere is approximately 170 billion tons (dry weight).\nIV. Despite occupying 70% of
the surface, the productivity of the oceans is only 55 billion tons.\n\nWhich of the statements
given above are correct according to the NCERT text?
ecosystems (Question 61):\n\nI. Gross primary productivity (GPP) is the rate of production of
organic matter during photosynthesis.\nII. Net primary productivity (NPP) is GPP minus
respiration losses (R), i.e., GPP - R = NPP.\nIII. The annual net primary productivity of the
whole biosphere is approximately 170 billion tons (dry weight).\nIV. Despite occupying 70% of
the surface, the productivity of the oceans is only 55 billion tons.\n\nWhich of the statements
given above are correct according to the NCERT text?
62.Given below are two statements, one is labelled as Assertion (A) and the other is labelled as
Reason (R) (Question 62):\n\nAssertion (A): The Net Primary Productivity (NPP) of terrestrial
land ecosystems is approximately 115 billion tons.\nReason (R): Net primary productivity
represents the available biomass in an ecosystem for the consumption of heterotrophs.\n\nIn the
light of the above statements, choose the correct answer:
Reason (R) (Question 62):\n\nAssertion (A): The Net Primary Productivity (NPP) of terrestrial
land ecosystems is approximately 115 billion tons.\nReason (R): Net primary productivity
represents the available biomass in an ecosystem for the consumption of heterotrophs.\n\nIn the
light of the above statements, choose the correct answer:
63.Consider the following statements regarding Gross and Net Primary Productivity of
ecosystems (Question 63):\n\nI. Gross primary productivity (GPP) is the rate of production of
organic matter during photosynthesis.\nII. Net primary productivity (NPP) is GPP minus
respiration losses (R), i.e., GPP - R = NPP.\nIII. The annual net primary productivity of the
whole biosphere is approximately 170 billion tons (dry weight).\nIV. Despite occupying 70% of
the surface, the productivity of the oceans is only 55 billion tons.\n\nWhich of the statements
given above are correct according to the NCERT text?
ecosystems (Question 63):\n\nI. Gross primary productivity (GPP) is the rate of production of
organic matter during photosynthesis.\nII. Net primary productivity (NPP) is GPP minus
respiration losses (R), i.e., GPP - R = NPP.\nIII. The annual net primary productivity of the
whole biosphere is approximately 170 billion tons (dry weight).\nIV. Despite occupying 70% of
the surface, the productivity of the oceans is only 55 billion tons.\n\nWhich of the statements
given above are correct according to the NCERT text?
64.Given below are two statements, one is labelled as Assertion (A) and the other is labelled as
Reason (R) (Question 64):\n\nAssertion (A): The Net Primary Productivity (NPP) of terrestrial
land ecosystems is approximately 115 billion tons.\nReason (R): Net primary productivity
represents the available biomass in an ecosystem for the consumption of heterotrophs.\n\nIn the
light of the above statements, choose the correct answer:
Reason (R) (Question 64):\n\nAssertion (A): The Net Primary Productivity (NPP) of terrestrial
land ecosystems is approximately 115 billion tons.\nReason (R): Net primary productivity
represents the available biomass in an ecosystem for the consumption of heterotrophs.\n\nIn the
light of the above statements, choose the correct answer:
65.Consider the following statements regarding Gross and Net Primary Productivity of
ecosystems (Question 65):\n\nI. Gross primary productivity (GPP) is the rate of production of
organic matter during photosynthesis.\nII. Net primary productivity (NPP) is GPP minus
respiration losses (R), i.e., GPP - R = NPP.\nIII. The annual net primary productivity of the
whole biosphere is approximately 170 billion tons (dry weight).\nIV. Despite occupying 70% of
the surface, the productivity of the oceans is only 55 billion tons.\n\nWhich of the statements
given above are correct according to the NCERT text?
ecosystems (Question 65):\n\nI. Gross primary productivity (GPP) is the rate of production of
organic matter during photosynthesis.\nII. Net primary productivity (NPP) is GPP minus
respiration losses (R), i.e., GPP - R = NPP.\nIII. The annual net primary productivity of the
whole biosphere is approximately 170 billion tons (dry weight).\nIV. Despite occupying 70% of
the surface, the productivity of the oceans is only 55 billion tons.\n\nWhich of the statements
given above are correct according to the NCERT text?
66.Given below are two statements, one is labelled as Assertion (A) and the other is labelled as
Reason (R) (Question 66):\n\nAssertion (A): The Net Primary Productivity (NPP) of terrestrial
land ecosystems is approximately 115 billion tons.\nReason (R): Net primary productivity
represents the available biomass in an ecosystem for the consumption of heterotrophs.\n\nIn the
light of the above statements, choose the correct answer:
Reason (R) (Question 66):\n\nAssertion (A): The Net Primary Productivity (NPP) of terrestrial
land ecosystems is approximately 115 billion tons.\nReason (R): Net primary productivity
represents the available biomass in an ecosystem for the consumption of heterotrophs.\n\nIn the
light of the above statements, choose the correct answer:
67.Consider the following statements regarding Gross and Net Primary Productivity of
ecosystems (Question 67):\n\nI. Gross primary productivity (GPP) is the rate of production of
organic matter during photosynthesis.\nII. Net primary productivity (NPP) is GPP minus
respiration losses (R), i.e., GPP - R = NPP.\nIII. The annual net primary productivity of the
whole biosphere is approximately 170 billion tons (dry weight).\nIV. Despite occupying 70% of
the surface, the productivity of the oceans is only 55 billion tons.\n\nWhich of the statements
given above are correct according to the NCERT text?
ecosystems (Question 67):\n\nI. Gross primary productivity (GPP) is the rate of production of
organic matter during photosynthesis.\nII. Net primary productivity (NPP) is GPP minus
respiration losses (R), i.e., GPP - R = NPP.\nIII. The annual net primary productivity of the
whole biosphere is approximately 170 billion tons (dry weight).\nIV. Despite occupying 70% of
the surface, the productivity of the oceans is only 55 billion tons.\n\nWhich of the statements
given above are correct according to the NCERT text?
68.Given below are two statements, one is labelled as Assertion (A) and the other is labelled as
Reason (R) (Question 68):\n\nAssertion (A): The Net Primary Productivity (NPP) of terrestrial
land ecosystems is approximately 115 billion tons.\nReason (R): Net primary productivity
represents the available biomass in an ecosystem for the consumption of heterotrophs.\n\nIn the
light of the above statements, choose the correct answer:
Reason (R) (Question 68):\n\nAssertion (A): The Net Primary Productivity (NPP) of terrestrial
land ecosystems is approximately 115 billion tons.\nReason (R): Net primary productivity
represents the available biomass in an ecosystem for the consumption of heterotrophs.\n\nIn the
light of the above statements, choose the correct answer:
69.Consider the following statements regarding Gross and Net Primary Productivity of
ecosystems (Question 69):\n\nI. Gross primary productivity (GPP) is the rate of production of
organic matter during photosynthesis.\nII. Net primary productivity (NPP) is GPP minus
respiration losses (R), i.e., GPP - R = NPP.\nIII. The annual net primary productivity of the
whole biosphere is approximately 170 billion tons (dry weight).\nIV. Despite occupying 70% of
the surface, the productivity of the oceans is only 55 billion tons.\n\nWhich of the statements
given above are correct according to the NCERT text?
ecosystems (Question 69):\n\nI. Gross primary productivity (GPP) is the rate of production of
organic matter during photosynthesis.\nII. Net primary productivity (NPP) is GPP minus
respiration losses (R), i.e., GPP - R = NPP.\nIII. The annual net primary productivity of the
whole biosphere is approximately 170 billion tons (dry weight).\nIV. Despite occupying 70% of
the surface, the productivity of the oceans is only 55 billion tons.\n\nWhich of the statements
given above are correct according to the NCERT text?
70.Given below are two statements, one is labelled as Assertion (A) and the other is labelled as
Reason (R) (Question 70):\n\nAssertion (A): The Net Primary Productivity (NPP) of terrestrial
land ecosystems is approximately 115 billion tons.\nReason (R): Net primary productivity
represents the available biomass in an ecosystem for the consumption of heterotrophs.\n\nIn the
light of the above statements, choose the correct answer:
Reason (R) (Question 70):\n\nAssertion (A): The Net Primary Productivity (NPP) of terrestrial
land ecosystems is approximately 115 billion tons.\nReason (R): Net primary productivity
represents the available biomass in an ecosystem for the consumption of heterotrophs.\n\nIn the
light of the above statements, choose the correct answer:
71.Consider the following statements regarding Gross and Net Primary Productivity of
ecosystems (Question 71):\n\nI. Gross primary productivity (GPP) is the rate of production of
organic matter during photosynthesis.\nII. Net primary productivity (NPP) is GPP minus
respiration losses (R), i.e., GPP - R = NPP.\nIII. The annual net primary productivity of the
whole biosphere is approximately 170 billion tons (dry weight).\nIV. Despite occupying 70% of
the surface, the productivity of the oceans is only 55 billion tons.\n\nWhich of the statements
given above are correct according to the NCERT text?
ecosystems (Question 71):\n\nI. Gross primary productivity (GPP) is the rate of production of
organic matter during photosynthesis.\nII. Net primary productivity (NPP) is GPP minus
respiration losses (R), i.e., GPP - R = NPP.\nIII. The annual net primary productivity of the
whole biosphere is approximately 170 billion tons (dry weight).\nIV. Despite occupying 70% of
the surface, the productivity of the oceans is only 55 billion tons.\n\nWhich of the statements
given above are correct according to the NCERT text?
72.Given below are two statements, one is labelled as Assertion (A) and the other is labelled as
Reason (R) (Question 72):\n\nAssertion (A): The Net Primary Productivity (NPP) of terrestrial
land ecosystems is approximately 115 billion tons.\nReason (R): Net primary productivity
represents the available biomass in an ecosystem for the consumption of heterotrophs.\n\nIn the
light of the above statements, choose the correct answer:
Reason (R) (Question 72):\n\nAssertion (A): The Net Primary Productivity (NPP) of terrestrial
land ecosystems is approximately 115 billion tons.\nReason (R): Net primary productivity
represents the available biomass in an ecosystem for the consumption of heterotrophs.\n\nIn the
light of the above statements, choose the correct answer:
73.Consider the following statements regarding Gross and Net Primary Productivity of
ecosystems (Question 73):\n\nI. Gross primary productivity (GPP) is the rate of production of
organic matter during photosynthesis.\nII. Net primary productivity (NPP) is GPP minus
respiration losses (R), i.e., GPP - R = NPP.\nIII. The annual net primary productivity of the
whole biosphere is approximately 170 billion tons (dry weight).\nIV. Despite occupying 70% of
the surface, the productivity of the oceans is only 55 billion tons.\n\nWhich of the statements
given above are correct according to the NCERT text?
ecosystems (Question 73):\n\nI. Gross primary productivity (GPP) is the rate of production of
organic matter during photosynthesis.\nII. Net primary productivity (NPP) is GPP minus
respiration losses (R), i.e., GPP - R = NPP.\nIII. The annual net primary productivity of the
whole biosphere is approximately 170 billion tons (dry weight).\nIV. Despite occupying 70% of
the surface, the productivity of the oceans is only 55 billion tons.\n\nWhich of the statements
given above are correct according to the NCERT text?
74.Given below are two statements, one is labelled as Assertion (A) and the other is labelled as
Reason (R) (Question 74):\n\nAssertion (A): The Net Primary Productivity (NPP) of terrestrial
land ecosystems is approximately 115 billion tons.\nReason (R): Net primary productivity
represents the available biomass in an ecosystem for the consumption of heterotrophs.\n\nIn the
light of the above statements, choose the correct answer:
Reason (R) (Question 74):\n\nAssertion (A): The Net Primary Productivity (NPP) of terrestrial
land ecosystems is approximately 115 billion tons.\nReason (R): Net primary productivity
represents the available biomass in an ecosystem for the consumption of heterotrophs.\n\nIn the
light of the above statements, choose the correct answer:
75.Consider the following statements regarding Gross and Net Primary Productivity of
ecosystems (Question 75):\n\nI. Gross primary productivity (GPP) is the rate of production of
organic matter during photosynthesis.\nII. Net primary productivity (NPP) is GPP minus
respiration losses (R), i.e., GPP - R = NPP.\nIII. The annual net primary productivity of the
whole biosphere is approximately 170 billion tons (dry weight).\nIV. Despite occupying 70% of
the surface, the productivity of the oceans is only 55 billion tons.\n\nWhich of the statements
given above are correct according to the NCERT text?
ecosystems (Question 75):\n\nI. Gross primary productivity (GPP) is the rate of production of
organic matter during photosynthesis.\nII. Net primary productivity (NPP) is GPP minus
respiration losses (R), i.e., GPP - R = NPP.\nIII. The annual net primary productivity of the
whole biosphere is approximately 170 billion tons (dry weight).\nIV. Despite occupying 70% of
the surface, the productivity of the oceans is only 55 billion tons.\n\nWhich of the statements
given above are correct according to the NCERT text?
76.Given below are two statements, one is labelled as Assertion (A) and the other is labelled as
Reason (R) (Question 76):\n\nAssertion (A): The Net Primary Productivity (NPP) of terrestrial
land ecosystems is approximately 115 billion tons.\nReason (R): Net primary productivity
represents the available biomass in an ecosystem for the consumption of heterotrophs.\n\nIn the
light of the above statements, choose the correct answer:
Reason (R) (Question 76):\n\nAssertion (A): The Net Primary Productivity (NPP) of terrestrial
land ecosystems is approximately 115 billion tons.\nReason (R): Net primary productivity
represents the available biomass in an ecosystem for the consumption of heterotrophs.\n\nIn the
light of the above statements, choose the correct answer:
77.Consider the following statements regarding Gross and Net Primary Productivity of
ecosystems (Question 77):\n\nI. Gross primary productivity (GPP) is the rate of production of
organic matter during photosynthesis.\nII. Net primary productivity (NPP) is GPP minus
respiration losses (R), i.e., GPP - R = NPP.\nIII. The annual net primary productivity of the
whole biosphere is approximately 170 billion tons (dry weight).\nIV. Despite occupying 70% of
the surface, the productivity of the oceans is only 55 billion tons.\n\nWhich of the statements
given above are correct according to the NCERT text?
ecosystems (Question 77):\n\nI. Gross primary productivity (GPP) is the rate of production of
organic matter during photosynthesis.\nII. Net primary productivity (NPP) is GPP minus
respiration losses (R), i.e., GPP - R = NPP.\nIII. The annual net primary productivity of the
whole biosphere is approximately 170 billion tons (dry weight).\nIV. Despite occupying 70% of
the surface, the productivity of the oceans is only 55 billion tons.\n\nWhich of the statements
given above are correct according to the NCERT text?
78.Given below are two statements, one is labelled as Assertion (A) and the other is labelled as
Reason (R) (Question 78):\n\nAssertion (A): The Net Primary Productivity (NPP) of terrestrial
land ecosystems is approximately 115 billion tons.\nReason (R): Net primary productivity
represents the available biomass in an ecosystem for the consumption of heterotrophs.\n\nIn the
light of the above statements, choose the correct answer:
Reason (R) (Question 78):\n\nAssertion (A): The Net Primary Productivity (NPP) of terrestrial
land ecosystems is approximately 115 billion tons.\nReason (R): Net primary productivity
represents the available biomass in an ecosystem for the consumption of heterotrophs.\n\nIn the
light of the above statements, choose the correct answer:
79.Consider the following statements regarding Gross and Net Primary Productivity of
ecosystems (Question 79):\n\nI. Gross primary productivity (GPP) is the rate of production of
organic matter during photosynthesis.\nII. Net primary productivity (NPP) is GPP minus
respiration losses (R), i.e., GPP - R = NPP.\nIII. The annual net primary productivity of the
whole biosphere is approximately 170 billion tons (dry weight).\nIV. Despite occupying 70% of
the surface, the productivity of the oceans is only 55 billion tons.\n\nWhich of the statements
given above are correct according to the NCERT text?
ecosystems (Question 79):\n\nI. Gross primary productivity (GPP) is the rate of production of
organic matter during photosynthesis.\nII. Net primary productivity (NPP) is GPP minus
respiration losses (R), i.e., GPP - R = NPP.\nIII. The annual net primary productivity of the
whole biosphere is approximately 170 billion tons (dry weight).\nIV. Despite occupying 70% of
the surface, the productivity of the oceans is only 55 billion tons.\n\nWhich of the statements
given above are correct according to the NCERT text?
80.Given below are two statements, one is labelled as Assertion (A) and the other is labelled as
Reason (R) (Question 80):\n\nAssertion (A): The Net Primary Productivity (NPP) of terrestrial
land ecosystems is approximately 115 billion tons.\nReason (R): Net primary productivity
represents the available biomass in an ecosystem for the consumption of heterotrophs.\n\nIn the
light of the above statements, choose the correct answer:
Reason (R) (Question 80):\n\nAssertion (A): The Net Primary Productivity (NPP) of terrestrial
land ecosystems is approximately 115 billion tons.\nReason (R): Net primary productivity
represents the available biomass in an ecosystem for the consumption of heterotrophs.\n\nIn the
light of the above statements, choose the correct answer:
81.Consider the following statements regarding Gross and Net Primary Productivity of
ecosystems (Question 81):\n\nI. Gross primary productivity (GPP) is the rate of production of
organic matter during photosynthesis.\nII. Net primary productivity (NPP) is GPP minus
respiration losses (R), i.e., GPP - R = NPP.\nIII. The annual net primary productivity of the
whole biosphere is approximately 170 billion tons (dry weight).\nIV. Despite occupying 70% of
the surface, the productivity of the oceans is only 55 billion tons.\n\nWhich of the statements
given above are correct according to the NCERT text?
ecosystems (Question 81):\n\nI. Gross primary productivity (GPP) is the rate of production of
organic matter during photosynthesis.\nII. Net primary productivity (NPP) is GPP minus
respiration losses (R), i.e., GPP - R = NPP.\nIII. The annual net primary productivity of the
whole biosphere is approximately 170 billion tons (dry weight).\nIV. Despite occupying 70% of
the surface, the productivity of the oceans is only 55 billion tons.\n\nWhich of the statements
given above are correct according to the NCERT text?
82.Given below are two statements, one is labelled as Assertion (A) and the other is labelled as
Reason (R) (Question 82):\n\nAssertion (A): The Net Primary Productivity (NPP) of terrestrial
land ecosystems is approximately 115 billion tons.\nReason (R): Net primary productivity
represents the available biomass in an ecosystem for the consumption of heterotrophs.\n\nIn the
light of the above statements, choose the correct answer:
Reason (R) (Question 82):\n\nAssertion (A): The Net Primary Productivity (NPP) of terrestrial
land ecosystems is approximately 115 billion tons.\nReason (R): Net primary productivity
represents the available biomass in an ecosystem for the consumption of heterotrophs.\n\nIn the
light of the above statements, choose the correct answer:
83.Consider the following statements regarding Gross and Net Primary Productivity of
ecosystems (Question 83):\n\nI. Gross primary productivity (GPP) is the rate of production of
organic matter during photosynthesis.\nII. Net primary productivity (NPP) is GPP minus
respiration losses (R), i.e., GPP - R = NPP.\nIII. The annual net primary productivity of the
whole biosphere is approximately 170 billion tons (dry weight).\nIV. Despite occupying 70% of
the surface, the productivity of the oceans is only 55 billion tons.\n\nWhich of the statements
given above are correct according to the NCERT text?
ecosystems (Question 83):\n\nI. Gross primary productivity (GPP) is the rate of production of
organic matter during photosynthesis.\nII. Net primary productivity (NPP) is GPP minus
respiration losses (R), i.e., GPP - R = NPP.\nIII. The annual net primary productivity of the
whole biosphere is approximately 170 billion tons (dry weight).\nIV. Despite occupying 70% of
the surface, the productivity of the oceans is only 55 billion tons.\n\nWhich of the statements
given above are correct according to the NCERT text?
84.Given below are two statements, one is labelled as Assertion (A) and the other is labelled as
Reason (R) (Question 84):\n\nAssertion (A): The Net Primary Productivity (NPP) of terrestrial
land ecosystems is approximately 115 billion tons.\nReason (R): Net primary productivity
represents the available biomass in an ecosystem for the consumption of heterotrophs.\n\nIn the
light of the above statements, choose the correct answer:
Reason (R) (Question 84):\n\nAssertion (A): The Net Primary Productivity (NPP) of terrestrial
land ecosystems is approximately 115 billion tons.\nReason (R): Net primary productivity
represents the available biomass in an ecosystem for the consumption of heterotrophs.\n\nIn the
light of the above statements, choose the correct answer:
85.Consider the following statements regarding Gross and Net Primary Productivity of
ecosystems (Question 85):\n\nI. Gross primary productivity (GPP) is the rate of production of
organic matter during photosynthesis.\nII. Net primary productivity (NPP) is GPP minus
respiration losses (R), i.e., GPP - R = NPP.\nIII. The annual net primary productivity of the
whole biosphere is approximately 170 billion tons (dry weight).\nIV. Despite occupying 70% of
the surface, the productivity of the oceans is only 55 billion tons.\n\nWhich of the statements
given above are correct according to the NCERT text?
ecosystems (Question 85):\n\nI. Gross primary productivity (GPP) is the rate of production of
organic matter during photosynthesis.\nII. Net primary productivity (NPP) is GPP minus
respiration losses (R), i.e., GPP - R = NPP.\nIII. The annual net primary productivity of the
whole biosphere is approximately 170 billion tons (dry weight).\nIV. Despite occupying 70% of
the surface, the productivity of the oceans is only 55 billion tons.\n\nWhich of the statements
given above are correct according to the NCERT text?
86.Given below are two statements, one is labelled as Assertion (A) and the other is labelled as
Reason (R) (Question 86):\n\nAssertion (A): The Net Primary Productivity (NPP) of terrestrial
land ecosystems is approximately 115 billion tons.\nReason (R): Net primary productivity
represents the available biomass in an ecosystem for the consumption of heterotrophs.\n\nIn the
light of the above statements, choose the correct answer:
Reason (R) (Question 86):\n\nAssertion (A): The Net Primary Productivity (NPP) of terrestrial
land ecosystems is approximately 115 billion tons.\nReason (R): Net primary productivity
represents the available biomass in an ecosystem for the consumption of heterotrophs.\n\nIn the
light of the above statements, choose the correct answer:
87.Consider the following statements regarding Gross and Net Primary Productivity of
ecosystems (Question 87):\n\nI. Gross primary productivity (GPP) is the rate of production of
organic matter during photosynthesis.\nII. Net primary productivity (NPP) is GPP minus
respiration losses (R), i.e., GPP - R = NPP.\nIII. The annual net primary productivity of the
whole biosphere is approximately 170 billion tons (dry weight).\nIV. Despite occupying 70% of
the surface, the productivity of the oceans is only 55 billion tons.\n\nWhich of the statements
given above are correct according to the NCERT text?
ecosystems (Question 87):\n\nI. Gross primary productivity (GPP) is the rate of production of
organic matter during photosynthesis.\nII. Net primary productivity (NPP) is GPP minus
respiration losses (R), i.e., GPP - R = NPP.\nIII. The annual net primary productivity of the
whole biosphere is approximately 170 billion tons (dry weight).\nIV. Despite occupying 70% of
the surface, the productivity of the oceans is only 55 billion tons.\n\nWhich of the statements
given above are correct according to the NCERT text?
88.Given below are two statements, one is labelled as Assertion (A) and the other is labelled as
Reason (R) (Question 88):\n\nAssertion (A): The Net Primary Productivity (NPP) of terrestrial
land ecosystems is approximately 115 billion tons.\nReason (R): Net primary productivity
represents the available biomass in an ecosystem for the consumption of heterotrophs.\n\nIn the
light of the above statements, choose the correct answer:
Reason (R) (Question 88):\n\nAssertion (A): The Net Primary Productivity (NPP) of terrestrial
land ecosystems is approximately 115 billion tons.\nReason (R): Net primary productivity
represents the available biomass in an ecosystem for the consumption of heterotrophs.\n\nIn the
light of the above statements, choose the correct answer:
89.Consider the following statements regarding Gross and Net Primary Productivity of
ecosystems (Question 89):\n\nI. Gross primary productivity (GPP) is the rate of production of
organic matter during photosynthesis.\nII. Net primary productivity (NPP) is GPP minus
respiration losses (R), i.e., GPP - R = NPP.\nIII. The annual net primary productivity of the
whole biosphere is approximately 170 billion tons (dry weight).\nIV. Despite occupying 70% of
the surface, the productivity of the oceans is only 55 billion tons.\n\nWhich of the statements
given above are correct according to the NCERT text?
ecosystems (Question 89):\n\nI. Gross primary productivity (GPP) is the rate of production of
organic matter during photosynthesis.\nII. Net primary productivity (NPP) is GPP minus
respiration losses (R), i.e., GPP - R = NPP.\nIII. The annual net primary productivity of the
whole biosphere is approximately 170 billion tons (dry weight).\nIV. Despite occupying 70% of
the surface, the productivity of the oceans is only 55 billion tons.\n\nWhich of the statements
given above are correct according to the NCERT text?
90.Given below are two statements, one is labelled as Assertion (A) and the other is labelled as
Reason (R) (Question 90):\n\nAssertion (A): The Net Primary Productivity (NPP) of terrestrial
land ecosystems is approximately 115 billion tons.\nReason (R): Net primary productivity
represents the available biomass in an ecosystem for the consumption of heterotrophs.\n\nIn the
light of the above statements, choose the correct answer:
Reason (R) (Question 90):\n\nAssertion (A): The Net Primary Productivity (NPP) of terrestrial
land ecosystems is approximately 115 billion tons.\nReason (R): Net primary productivity
represents the available biomass in an ecosystem for the consumption of heterotrophs.\n\nIn the
light of the above statements, choose the correct answer:
91.Consider the following statements regarding the steps in the process of decomposition
(Question 91):\n\nI. Detritivores (e.g., earthworm) break down detritus into smaller particles, a
process called fragmentation.\nII. By the process of leaching, water-soluble inorganic nutrients
go down into the soil horizon and get precipitated as unavailable salts.\nIII. Bacterial and fungal
enzymes degrade detritus into simpler inorganic substances, a process called catabolism.\nIV.
Fragmentation, leaching, and catabolism operate sequentially one after another in a strict
chronological timeline.\n\nWhich of the statements given above are correct according to the
NCERT text?
(Question 91):\n\nI. Detritivores (e.g., earthworm) break down detritus into smaller particles, a
process called fragmentation.\nII. By the process of leaching, water-soluble inorganic nutrients
go down into the soil horizon and get precipitated as unavailable salts.\nIII. Bacterial and fungal
enzymes degrade detritus into simpler inorganic substances, a process called catabolism.\nIV.
Fragmentation, leaching, and catabolism operate sequentially one after another in a strict
chronological timeline.\n\nWhich of the statements given above are correct according to the
NCERT text?
92.Given below are two statements, one is labelled as Assertion (A) and the other is labelled as
Reason (R) (Question 92):\n\nAssertion (A): Dead plant remains (leaves, bark, flowers) and
dead remains of animals, including fecal matter, constitute detritus.\nReason (R): Detritus is the
primary raw material that serves as the input for the process of decomposition.\n\nIn the light
of the above statements, choose the correct answer:
Reason (R) (Question 92):\n\nAssertion (A): Dead plant remains (leaves, bark, flowers) and
dead remains of animals, including fecal matter, constitute detritus.\nReason (R): Detritus is the
primary raw material that serves as the input for the process of decomposition.\n\nIn the light
of the above statements, choose the correct answer:
93.Consider the following statements regarding the steps in the process of decomposition
(Question 93):\n\nI. Detritivores (e.g., earthworm) break down detritus into smaller particles, a
process called fragmentation.\nII. By the process of leaching, water-soluble inorganic nutrients
go down into the soil horizon and get precipitated as unavailable salts.\nIII. Bacterial and fungal
enzymes degrade detritus into simpler inorganic substances, a process called catabolism.\nIV.
Fragmentation, leaching, and catabolism operate sequentially one after another in a strict
chronological timeline.\n\nWhich of the statements given above are correct according to the
NCERT text?
(Question 93):\n\nI. Detritivores (e.g., earthworm) break down detritus into smaller particles, a
process called fragmentation.\nII. By the process of leaching, water-soluble inorganic nutrients
go down into the soil horizon and get precipitated as unavailable salts.\nIII. Bacterial and fungal
enzymes degrade detritus into simpler inorganic substances, a process called catabolism.\nIV.
Fragmentation, leaching, and catabolism operate sequentially one after another in a strict
chronological timeline.\n\nWhich of the statements given above are correct according to the
NCERT text?
94.Given below are two statements, one is labelled as Assertion (A) and the other is labelled as
Reason (R) (Question 94):\n\nAssertion (A): Dead plant remains (leaves, bark, flowers) and
dead remains of animals, including fecal matter, constitute detritus.\nReason (R): Detritus is the
primary raw material that serves as the input for the process of decomposition.\n\nIn the light
of the above statements, choose the correct answer:
Reason (R) (Question 94):\n\nAssertion (A): Dead plant remains (leaves, bark, flowers) and
dead remains of animals, including fecal matter, constitute detritus.\nReason (R): Detritus is the
primary raw material that serves as the input for the process of decomposition.\n\nIn the light
of the above statements, choose the correct answer:
95.Consider the following statements regarding the steps in the process of decomposition
(Question 95):\n\nI. Detritivores (e.g., earthworm) break down detritus into smaller particles, a
process called fragmentation.\nII. By the process of leaching, water-soluble inorganic nutrients
go down into the soil horizon and get precipitated as unavailable salts.\nIII. Bacterial and fungal
enzymes degrade detritus into simpler inorganic substances, a process called catabolism.\nIV.
Fragmentation, leaching, and catabolism operate sequentially one after another in a strict
chronological timeline.\n\nWhich of the statements given above are correct according to the
NCERT text?
(Question 95):\n\nI. Detritivores (e.g., earthworm) break down detritus into smaller particles, a
process called fragmentation.\nII. By the process of leaching, water-soluble inorganic nutrients
go down into the soil horizon and get precipitated as unavailable salts.\nIII. Bacterial and fungal
enzymes degrade detritus into simpler inorganic substances, a process called catabolism.\nIV.
Fragmentation, leaching, and catabolism operate sequentially one after another in a strict
chronological timeline.\n\nWhich of the statements given above are correct according to the
NCERT text?
96.Given below are two statements, one is labelled as Assertion (A) and the other is labelled as
Reason (R) (Question 96):\n\nAssertion (A): Dead plant remains (leaves, bark, flowers) and
dead remains of animals, including fecal matter, constitute detritus.\nReason (R): Detritus is the
primary raw material that serves as the input for the process of decomposition.\n\nIn the light
of the above statements, choose the correct answer:
Reason (R) (Question 96):\n\nAssertion (A): Dead plant remains (leaves, bark, flowers) and
dead remains of animals, including fecal matter, constitute detritus.\nReason (R): Detritus is the
primary raw material that serves as the input for the process of decomposition.\n\nIn the light
of the above statements, choose the correct answer:
97.Consider the following statements regarding the steps in the process of decomposition
(Question 97):\n\nI. Detritivores (e.g., earthworm) break down detritus into smaller particles, a
process called fragmentation.\nII. By the process of leaching, water-soluble inorganic nutrients
go down into the soil horizon and get precipitated as unavailable salts.\nIII. Bacterial and fungal
enzymes degrade detritus into simpler inorganic substances, a process called catabolism.\nIV.
Fragmentation, leaching, and catabolism operate sequentially one after another in a strict
chronological timeline.\n\nWhich of the statements given above are correct according to the
NCERT text?
(Question 97):\n\nI. Detritivores (e.g., earthworm) break down detritus into smaller particles, a
process called fragmentation.\nII. By the process of leaching, water-soluble inorganic nutrients
go down into the soil horizon and get precipitated as unavailable salts.\nIII. Bacterial and fungal
enzymes degrade detritus into simpler inorganic substances, a process called catabolism.\nIV.
Fragmentation, leaching, and catabolism operate sequentially one after another in a strict
chronological timeline.\n\nWhich of the statements given above are correct according to the
NCERT text?
98.Given below are two statements, one is labelled as Assertion (A) and the other is labelled as
Reason (R) (Question 98):\n\nAssertion (A): Dead plant remains (leaves, bark, flowers) and
dead remains of animals, including fecal matter, constitute detritus.\nReason (R): Detritus is the
primary raw material that serves as the input for the process of decomposition.\n\nIn the light
of the above statements, choose the correct answer:
Reason (R) (Question 98):\n\nAssertion (A): Dead plant remains (leaves, bark, flowers) and
dead remains of animals, including fecal matter, constitute detritus.\nReason (R): Detritus is the
primary raw material that serves as the input for the process of decomposition.\n\nIn the light
of the above statements, choose the correct answer:
99.Consider the following statements regarding the steps in the process of decomposition
(Question 99):\n\nI. Detritivores (e.g., earthworm) break down detritus into smaller particles, a
process called fragmentation.\nII. By the process of leaching, water-soluble inorganic nutrients
go down into the soil horizon and get precipitated as unavailable salts.\nIII. Bacterial and fungal
enzymes degrade detritus into simpler inorganic substances, a process called catabolism.\nIV.
Fragmentation, leaching, and catabolism operate sequentially one after another in a strict
chronological timeline.\n\nWhich of the statements given above are correct according to the
NCERT text?
(Question 99):\n\nI. Detritivores (e.g., earthworm) break down detritus into smaller particles, a
process called fragmentation.\nII. By the process of leaching, water-soluble inorganic nutrients
go down into the soil horizon and get precipitated as unavailable salts.\nIII. Bacterial and fungal
enzymes degrade detritus into simpler inorganic substances, a process called catabolism.\nIV.
Fragmentation, leaching, and catabolism operate sequentially one after another in a strict
chronological timeline.\n\nWhich of the statements given above are correct according to the
NCERT text?
100.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 100):\n\nAssertion (A): Dead plant remains (leaves, bark, flowers) and
dead remains of animals, including fecal matter, constitute detritus.\nReason (R): Detritus is the
primary raw material that serves as the input for the process of decomposition.\n\nIn the light
of the above statements, choose the correct answer:
as Reason (R) (Question 100):\n\nAssertion (A): Dead plant remains (leaves, bark, flowers) and
dead remains of animals, including fecal matter, constitute detritus.\nReason (R): Detritus is the
primary raw material that serves as the input for the process of decomposition.\n\nIn the light
of the above statements, choose the correct answer:
101.Consider the following statements regarding the steps in the process of decomposition
(Question 101):\n\nI. Detritivores (e.g., earthworm) break down detritus into smaller particles, a
process called fragmentation.\nII. By the process of leaching, water-soluble inorganic nutrients
go down into the soil horizon and get precipitated as unavailable salts.\nIII. Bacterial and fungal
enzymes degrade detritus into simpler inorganic substances, a process called catabolism.\nIV.
Fragmentation, leaching, and catabolism operate sequentially one after another in a strict
chronological timeline.\n\nWhich of the statements given above are correct according to the
NCERT text?
(Question 101):\n\nI. Detritivores (e.g., earthworm) break down detritus into smaller particles, a
process called fragmentation.\nII. By the process of leaching, water-soluble inorganic nutrients
go down into the soil horizon and get precipitated as unavailable salts.\nIII. Bacterial and fungal
enzymes degrade detritus into simpler inorganic substances, a process called catabolism.\nIV.
Fragmentation, leaching, and catabolism operate sequentially one after another in a strict
chronological timeline.\n\nWhich of the statements given above are correct according to the
NCERT text?
102.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 102):\n\nAssertion (A): Dead plant remains (leaves, bark, flowers) and
dead remains of animals, including fecal matter, constitute detritus.\nReason (R): Detritus is the
primary raw material that serves as the input for the process of decomposition.\n\nIn the light
of the above statements, choose the correct answer:
as Reason (R) (Question 102):\n\nAssertion (A): Dead plant remains (leaves, bark, flowers) and
dead remains of animals, including fecal matter, constitute detritus.\nReason (R): Detritus is the
primary raw material that serves as the input for the process of decomposition.\n\nIn the light
of the above statements, choose the correct answer:
103.Consider the following statements regarding the steps in the process of decomposition
(Question 103):\n\nI. Detritivores (e.g., earthworm) break down detritus into smaller particles, a
process called fragmentation.\nII. By the process of leaching, water-soluble inorganic nutrients
go down into the soil horizon and get precipitated as unavailable salts.\nIII. Bacterial and fungal
enzymes degrade detritus into simpler inorganic substances, a process called catabolism.\nIV.
Fragmentation, leaching, and catabolism operate sequentially one after another in a strict
chronological timeline.\n\nWhich of the statements given above are correct according to the
NCERT text?
(Question 103):\n\nI. Detritivores (e.g., earthworm) break down detritus into smaller particles, a
process called fragmentation.\nII. By the process of leaching, water-soluble inorganic nutrients
go down into the soil horizon and get precipitated as unavailable salts.\nIII. Bacterial and fungal
enzymes degrade detritus into simpler inorganic substances, a process called catabolism.\nIV.
Fragmentation, leaching, and catabolism operate sequentially one after another in a strict
chronological timeline.\n\nWhich of the statements given above are correct according to the
NCERT text?
104.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 104):\n\nAssertion (A): Dead plant remains (leaves, bark, flowers) and
dead remains of animals, including fecal matter, constitute detritus.\nReason (R): Detritus is the
primary raw material that serves as the input for the process of decomposition.\n\nIn the light
of the above statements, choose the correct answer:
as Reason (R) (Question 104):\n\nAssertion (A): Dead plant remains (leaves, bark, flowers) and
dead remains of animals, including fecal matter, constitute detritus.\nReason (R): Detritus is the
primary raw material that serves as the input for the process of decomposition.\n\nIn the light
of the above statements, choose the correct answer:
105.Consider the following statements regarding the steps in the process of decomposition
(Question 105):\n\nI. Detritivores (e.g., earthworm) break down detritus into smaller particles, a
process called fragmentation.\nII. By the process of leaching, water-soluble inorganic nutrients
go down into the soil horizon and get precipitated as unavailable salts.\nIII. Bacterial and fungal
enzymes degrade detritus into simpler inorganic substances, a process called catabolism.\nIV.
Fragmentation, leaching, and catabolism operate sequentially one after another in a strict
chronological timeline.\n\nWhich of the statements given above are correct according to the
NCERT text?
(Question 105):\n\nI. Detritivores (e.g., earthworm) break down detritus into smaller particles, a
process called fragmentation.\nII. By the process of leaching, water-soluble inorganic nutrients
go down into the soil horizon and get precipitated as unavailable salts.\nIII. Bacterial and fungal
enzymes degrade detritus into simpler inorganic substances, a process called catabolism.\nIV.
Fragmentation, leaching, and catabolism operate sequentially one after another in a strict
chronological timeline.\n\nWhich of the statements given above are correct according to the
NCERT text?
106.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 106):\n\nAssertion (A): Dead plant remains (leaves, bark, flowers) and
dead remains of animals, including fecal matter, constitute detritus.\nReason (R): Detritus is the
primary raw material that serves as the input for the process of decomposition.\n\nIn the light
of the above statements, choose the correct answer:
as Reason (R) (Question 106):\n\nAssertion (A): Dead plant remains (leaves, bark, flowers) and
dead remains of animals, including fecal matter, constitute detritus.\nReason (R): Detritus is the
primary raw material that serves as the input for the process of decomposition.\n\nIn the light
of the above statements, choose the correct answer:
107.Consider the following statements regarding the steps in the process of decomposition
(Question 107):\n\nI. Detritivores (e.g., earthworm) break down detritus into smaller particles, a
process called fragmentation.\nII. By the process of leaching, water-soluble inorganic nutrients
go down into the soil horizon and get precipitated as unavailable salts.\nIII. Bacterial and fungal
enzymes degrade detritus into simpler inorganic substances, a process called catabolism.\nIV.
Fragmentation, leaching, and catabolism operate sequentially one after another in a strict
chronological timeline.\n\nWhich of the statements given above are correct according to the
NCERT text?
(Question 107):\n\nI. Detritivores (e.g., earthworm) break down detritus into smaller particles, a
process called fragmentation.\nII. By the process of leaching, water-soluble inorganic nutrients
go down into the soil horizon and get precipitated as unavailable salts.\nIII. Bacterial and fungal
enzymes degrade detritus into simpler inorganic substances, a process called catabolism.\nIV.
Fragmentation, leaching, and catabolism operate sequentially one after another in a strict
chronological timeline.\n\nWhich of the statements given above are correct according to the
NCERT text?
108.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 108):\n\nAssertion (A): Dead plant remains (leaves, bark, flowers) and
dead remains of animals, including fecal matter, constitute detritus.\nReason (R): Detritus is the
primary raw material that serves as the input for the process of decomposition.\n\nIn the light
of the above statements, choose the correct answer:
as Reason (R) (Question 108):\n\nAssertion (A): Dead plant remains (leaves, bark, flowers) and
dead remains of animals, including fecal matter, constitute detritus.\nReason (R): Detritus is the
primary raw material that serves as the input for the process of decomposition.\n\nIn the light
of the above statements, choose the correct answer:
109.Consider the following statements regarding the steps in the process of decomposition
(Question 109):\n\nI. Detritivores (e.g., earthworm) break down detritus into smaller particles, a
process called fragmentation.\nII. By the process of leaching, water-soluble inorganic nutrients
go down into the soil horizon and get precipitated as unavailable salts.\nIII. Bacterial and fungal
enzymes degrade detritus into simpler inorganic substances, a process called catabolism.\nIV.
Fragmentation, leaching, and catabolism operate sequentially one after another in a strict
chronological timeline.\n\nWhich of the statements given above are correct according to the
NCERT text?
(Question 109):\n\nI. Detritivores (e.g., earthworm) break down detritus into smaller particles, a
process called fragmentation.\nII. By the process of leaching, water-soluble inorganic nutrients
go down into the soil horizon and get precipitated as unavailable salts.\nIII. Bacterial and fungal
enzymes degrade detritus into simpler inorganic substances, a process called catabolism.\nIV.
Fragmentation, leaching, and catabolism operate sequentially one after another in a strict
chronological timeline.\n\nWhich of the statements given above are correct according to the
NCERT text?
110.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 110):\n\nAssertion (A): Dead plant remains (leaves, bark, flowers) and
dead remains of animals, including fecal matter, constitute detritus.\nReason (R): Detritus is the
primary raw material that serves as the input for the process of decomposition.\n\nIn the light
of the above statements, choose the correct answer:
as Reason (R) (Question 110):\n\nAssertion (A): Dead plant remains (leaves, bark, flowers) and
dead remains of animals, including fecal matter, constitute detritus.\nReason (R): Detritus is the
primary raw material that serves as the input for the process of decomposition.\n\nIn the light
of the above statements, choose the correct answer:
111.Consider the following statements regarding the steps in the process of decomposition
(Question 111):\n\nI. Detritivores (e.g., earthworm) break down detritus into smaller particles, a
process called fragmentation.\nII. By the process of leaching, water-soluble inorganic nutrients
go down into the soil horizon and get precipitated as unavailable salts.\nIII. Bacterial and fungal
enzymes degrade detritus into simpler inorganic substances, a process called catabolism.\nIV.
Fragmentation, leaching, and catabolism operate sequentially one after another in a strict
chronological timeline.\n\nWhich of the statements given above are correct according to the
NCERT text?
(Question 111):\n\nI. Detritivores (e.g., earthworm) break down detritus into smaller particles, a
process called fragmentation.\nII. By the process of leaching, water-soluble inorganic nutrients
go down into the soil horizon and get precipitated as unavailable salts.\nIII. Bacterial and fungal
enzymes degrade detritus into simpler inorganic substances, a process called catabolism.\nIV.
Fragmentation, leaching, and catabolism operate sequentially one after another in a strict
chronological timeline.\n\nWhich of the statements given above are correct according to the
NCERT text?
112.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 112):\n\nAssertion (A): Dead plant remains (leaves, bark, flowers) and
dead remains of animals, including fecal matter, constitute detritus.\nReason (R): Detritus is the
primary raw material that serves as the input for the process of decomposition.\n\nIn the light
of the above statements, choose the correct answer:
as Reason (R) (Question 112):\n\nAssertion (A): Dead plant remains (leaves, bark, flowers) and
dead remains of animals, including fecal matter, constitute detritus.\nReason (R): Detritus is the
primary raw material that serves as the input for the process of decomposition.\n\nIn the light
of the above statements, choose the correct answer:
113.Consider the following statements regarding the steps in the process of decomposition
(Question 113):\n\nI. Detritivores (e.g., earthworm) break down detritus into smaller particles, a
process called fragmentation.\nII. By the process of leaching, water-soluble inorganic nutrients
go down into the soil horizon and get precipitated as unavailable salts.\nIII. Bacterial and fungal
enzymes degrade detritus into simpler inorganic substances, a process called catabolism.\nIV.
Fragmentation, leaching, and catabolism operate sequentially one after another in a strict
chronological timeline.\n\nWhich of the statements given above are correct according to the
NCERT text?
(Question 113):\n\nI. Detritivores (e.g., earthworm) break down detritus into smaller particles, a
process called fragmentation.\nII. By the process of leaching, water-soluble inorganic nutrients
go down into the soil horizon and get precipitated as unavailable salts.\nIII. Bacterial and fungal
enzymes degrade detritus into simpler inorganic substances, a process called catabolism.\nIV.
Fragmentation, leaching, and catabolism operate sequentially one after another in a strict
chronological timeline.\n\nWhich of the statements given above are correct according to the
NCERT text?
114.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 114):\n\nAssertion (A): Dead plant remains (leaves, bark, flowers) and
dead remains of animals, including fecal matter, constitute detritus.\nReason (R): Detritus is the
primary raw material that serves as the input for the process of decomposition.\n\nIn the light
of the above statements, choose the correct answer:
as Reason (R) (Question 114):\n\nAssertion (A): Dead plant remains (leaves, bark, flowers) and
dead remains of animals, including fecal matter, constitute detritus.\nReason (R): Detritus is the
primary raw material that serves as the input for the process of decomposition.\n\nIn the light
of the above statements, choose the correct answer:
115.Consider the following statements regarding the steps in the process of decomposition
(Question 115):\n\nI. Detritivores (e.g., earthworm) break down detritus into smaller particles, a
process called fragmentation.\nII. By the process of leaching, water-soluble inorganic nutrients
go down into the soil horizon and get precipitated as unavailable salts.\nIII. Bacterial and fungal
enzymes degrade detritus into simpler inorganic substances, a process called catabolism.\nIV.
Fragmentation, leaching, and catabolism operate sequentially one after another in a strict
chronological timeline.\n\nWhich of the statements given above are correct according to the
NCERT text?
(Question 115):\n\nI. Detritivores (e.g., earthworm) break down detritus into smaller particles, a
process called fragmentation.\nII. By the process of leaching, water-soluble inorganic nutrients
go down into the soil horizon and get precipitated as unavailable salts.\nIII. Bacterial and fungal
enzymes degrade detritus into simpler inorganic substances, a process called catabolism.\nIV.
Fragmentation, leaching, and catabolism operate sequentially one after another in a strict
chronological timeline.\n\nWhich of the statements given above are correct according to the
NCERT text?
116.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 116):\n\nAssertion (A): Dead plant remains (leaves, bark, flowers) and
dead remains of animals, including fecal matter, constitute detritus.\nReason (R): Detritus is the
primary raw material that serves as the input for the process of decomposition.\n\nIn the light
of the above statements, choose the correct answer:
as Reason (R) (Question 116):\n\nAssertion (A): Dead plant remains (leaves, bark, flowers) and
dead remains of animals, including fecal matter, constitute detritus.\nReason (R): Detritus is the
primary raw material that serves as the input for the process of decomposition.\n\nIn the light
of the above statements, choose the correct answer:
117.Consider the following statements regarding the steps in the process of decomposition
(Question 117):\n\nI. Detritivores (e.g., earthworm) break down detritus into smaller particles, a
process called fragmentation.\nII. By the process of leaching, water-soluble inorganic nutrients
go down into the soil horizon and get precipitated as unavailable salts.\nIII. Bacterial and fungal
enzymes degrade detritus into simpler inorganic substances, a process called catabolism.\nIV.
Fragmentation, leaching, and catabolism operate sequentially one after another in a strict
chronological timeline.\n\nWhich of the statements given above are correct according to the
NCERT text?
(Question 117):\n\nI. Detritivores (e.g., earthworm) break down detritus into smaller particles, a
process called fragmentation.\nII. By the process of leaching, water-soluble inorganic nutrients
go down into the soil horizon and get precipitated as unavailable salts.\nIII. Bacterial and fungal
enzymes degrade detritus into simpler inorganic substances, a process called catabolism.\nIV.
Fragmentation, leaching, and catabolism operate sequentially one after another in a strict
chronological timeline.\n\nWhich of the statements given above are correct according to the
NCERT text?
118.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 118):\n\nAssertion (A): Dead plant remains (leaves, bark, flowers) and
dead remains of animals, including fecal matter, constitute detritus.\nReason (R): Detritus is the
primary raw material that serves as the input for the process of decomposition.\n\nIn the light
of the above statements, choose the correct answer:
as Reason (R) (Question 118):\n\nAssertion (A): Dead plant remains (leaves, bark, flowers) and
dead remains of animals, including fecal matter, constitute detritus.\nReason (R): Detritus is the
primary raw material that serves as the input for the process of decomposition.\n\nIn the light
of the above statements, choose the correct answer:
119.Consider the following statements regarding the steps in the process of decomposition
(Question 119):\n\nI. Detritivores (e.g., earthworm) break down detritus into smaller particles, a
process called fragmentation.\nII. By the process of leaching, water-soluble inorganic nutrients
go down into the soil horizon and get precipitated as unavailable salts.\nIII. Bacterial and fungal
enzymes degrade detritus into simpler inorganic substances, a process called catabolism.\nIV.
Fragmentation, leaching, and catabolism operate sequentially one after another in a strict
chronological timeline.\n\nWhich of the statements given above are correct according to the
NCERT text?
(Question 119):\n\nI. Detritivores (e.g., earthworm) break down detritus into smaller particles, a
process called fragmentation.\nII. By the process of leaching, water-soluble inorganic nutrients
go down into the soil horizon and get precipitated as unavailable salts.\nIII. Bacterial and fungal
enzymes degrade detritus into simpler inorganic substances, a process called catabolism.\nIV.
Fragmentation, leaching, and catabolism operate sequentially one after another in a strict
chronological timeline.\n\nWhich of the statements given above are correct according to the
NCERT text?
120.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 120):\n\nAssertion (A): Dead plant remains (leaves, bark, flowers) and
dead remains of animals, including fecal matter, constitute detritus.\nReason (R): Detritus is the
primary raw material that serves as the input for the process of decomposition.\n\nIn the light
of the above statements, choose the correct answer:
as Reason (R) (Question 120):\n\nAssertion (A): Dead plant remains (leaves, bark, flowers) and
dead remains of animals, including fecal matter, constitute detritus.\nReason (R): Detritus is the
primary raw material that serves as the input for the process of decomposition.\n\nIn the light
of the above statements, choose the correct answer:
121.Consider the following statements regarding humification and mineralisation in the soil
(Question 121):\n\nI. Humification leads to the accumulation of a dark coloured amorphous
substance called humus.\nII. Humus is highly resistant to microbial action and undergoes
decomposition at an extremely slow rate.\nIII. Being colloidal in nature, humus serves as a
highly effective reservoir of plant nutrients.\nIV. Mineralisation is the process where humus is
further degraded by some microbes to release organic sugars.\n\nWhich of the statements given
above are correct according to the NCERT text?
(Question 121):\n\nI. Humification leads to the accumulation of a dark coloured amorphous
substance called humus.\nII. Humus is highly resistant to microbial action and undergoes
decomposition at an extremely slow rate.\nIII. Being colloidal in nature, humus serves as a
highly effective reservoir of plant nutrients.\nIV. Mineralisation is the process where humus is
further degraded by some microbes to release organic sugars.\n\nWhich of the statements given
above are correct according to the NCERT text?
122.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 122):\n\nAssertion (A): Decomposition rate is slower if detritus is rich
in lignin and chitin, and quicker if rich in nitrogen and sugars.\nReason (R): Decomposition is
largely an oxygen-requiring process controlled by chemical composition and climatic
factors.\n\nIn the light of the above statements, choose the correct answer:
as Reason (R) (Question 122):\n\nAssertion (A): Decomposition rate is slower if detritus is rich
in lignin and chitin, and quicker if rich in nitrogen and sugars.\nReason (R): Decomposition is
largely an oxygen-requiring process controlled by chemical composition and climatic
factors.\n\nIn the light of the above statements, choose the correct answer:
123.Consider the following statements regarding humification and mineralisation in the soil
(Question 123):\n\nI. Humification leads to the accumulation of a dark coloured amorphous
substance called humus.\nII. Humus is highly resistant to microbial action and undergoes
decomposition at an extremely slow rate.\nIII. Being colloidal in nature, humus serves as a
highly effective reservoir of plant nutrients.\nIV. Mineralisation is the process where humus is
further degraded by some microbes to release organic sugars.\n\nWhich of the statements given
above are correct according to the NCERT text?
(Question 123):\n\nI. Humification leads to the accumulation of a dark coloured amorphous
substance called humus.\nII. Humus is highly resistant to microbial action and undergoes
decomposition at an extremely slow rate.\nIII. Being colloidal in nature, humus serves as a
highly effective reservoir of plant nutrients.\nIV. Mineralisation is the process where humus is
further degraded by some microbes to release organic sugars.\n\nWhich of the statements given
above are correct according to the NCERT text?
124.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 124):\n\nAssertion (A): Decomposition rate is slower if detritus is rich
in lignin and chitin, and quicker if rich in nitrogen and sugars.\nReason (R): Decomposition is
largely an oxygen-requiring process controlled by chemical composition and climatic
factors.\n\nIn the light of the above statements, choose the correct answer:
as Reason (R) (Question 124):\n\nAssertion (A): Decomposition rate is slower if detritus is rich
in lignin and chitin, and quicker if rich in nitrogen and sugars.\nReason (R): Decomposition is
largely an oxygen-requiring process controlled by chemical composition and climatic
factors.\n\nIn the light of the above statements, choose the correct answer:
125.Consider the following statements regarding humification and mineralisation in the soil
(Question 125):\n\nI. Humification leads to the accumulation of a dark coloured amorphous
substance called humus.\nII. Humus is highly resistant to microbial action and undergoes
decomposition at an extremely slow rate.\nIII. Being colloidal in nature, humus serves as a
highly effective reservoir of plant nutrients.\nIV. Mineralisation is the process where humus is
further degraded by some microbes to release organic sugars.\n\nWhich of the statements given
above are correct according to the NCERT text?
(Question 125):\n\nI. Humification leads to the accumulation of a dark coloured amorphous
substance called humus.\nII. Humus is highly resistant to microbial action and undergoes
decomposition at an extremely slow rate.\nIII. Being colloidal in nature, humus serves as a
highly effective reservoir of plant nutrients.\nIV. Mineralisation is the process where humus is
further degraded by some microbes to release organic sugars.\n\nWhich of the statements given
above are correct according to the NCERT text?
126.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 126):\n\nAssertion (A): Decomposition rate is slower if detritus is rich
in lignin and chitin, and quicker if rich in nitrogen and sugars.\nReason (R): Decomposition is
largely an oxygen-requiring process controlled by chemical composition and climatic
factors.\n\nIn the light of the above statements, choose the correct answer:
as Reason (R) (Question 126):\n\nAssertion (A): Decomposition rate is slower if detritus is rich
in lignin and chitin, and quicker if rich in nitrogen and sugars.\nReason (R): Decomposition is
largely an oxygen-requiring process controlled by chemical composition and climatic
factors.\n\nIn the light of the above statements, choose the correct answer:
127.Consider the following statements regarding humification and mineralisation in the soil
(Question 127):\n\nI. Humification leads to the accumulation of a dark coloured amorphous
substance called humus.\nII. Humus is highly resistant to microbial action and undergoes
decomposition at an extremely slow rate.\nIII. Being colloidal in nature, humus serves as a
highly effective reservoir of plant nutrients.\nIV. Mineralisation is the process where humus is
further degraded by some microbes to release organic sugars.\n\nWhich of the statements given
above are correct according to the NCERT text?
(Question 127):\n\nI. Humification leads to the accumulation of a dark coloured amorphous
substance called humus.\nII. Humus is highly resistant to microbial action and undergoes
decomposition at an extremely slow rate.\nIII. Being colloidal in nature, humus serves as a
highly effective reservoir of plant nutrients.\nIV. Mineralisation is the process where humus is
further degraded by some microbes to release organic sugars.\n\nWhich of the statements given
above are correct according to the NCERT text?
128.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 128):\n\nAssertion (A): Decomposition rate is slower if detritus is rich
in lignin and chitin, and quicker if rich in nitrogen and sugars.\nReason (R): Decomposition is
largely an oxygen-requiring process controlled by chemical composition and climatic
factors.\n\nIn the light of the above statements, choose the correct answer:
as Reason (R) (Question 128):\n\nAssertion (A): Decomposition rate is slower if detritus is rich
in lignin and chitin, and quicker if rich in nitrogen and sugars.\nReason (R): Decomposition is
largely an oxygen-requiring process controlled by chemical composition and climatic
factors.\n\nIn the light of the above statements, choose the correct answer:
129.Consider the following statements regarding humification and mineralisation in the soil
(Question 129):\n\nI. Humification leads to the accumulation of a dark coloured amorphous
substance called humus.\nII. Humus is highly resistant to microbial action and undergoes
decomposition at an extremely slow rate.\nIII. Being colloidal in nature, humus serves as a
highly effective reservoir of plant nutrients.\nIV. Mineralisation is the process where humus is
further degraded by some microbes to release organic sugars.\n\nWhich of the statements given
above are correct according to the NCERT text?
(Question 129):\n\nI. Humification leads to the accumulation of a dark coloured amorphous
substance called humus.\nII. Humus is highly resistant to microbial action and undergoes
decomposition at an extremely slow rate.\nIII. Being colloidal in nature, humus serves as a
highly effective reservoir of plant nutrients.\nIV. Mineralisation is the process where humus is
further degraded by some microbes to release organic sugars.\n\nWhich of the statements given
above are correct according to the NCERT text?
130.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 130):\n\nAssertion (A): Decomposition rate is slower if detritus is rich
in lignin and chitin, and quicker if rich in nitrogen and sugars.\nReason (R): Decomposition is
largely an oxygen-requiring process controlled by chemical composition and climatic
factors.\n\nIn the light of the above statements, choose the correct answer:
as Reason (R) (Question 130):\n\nAssertion (A): Decomposition rate is slower if detritus is rich
in lignin and chitin, and quicker if rich in nitrogen and sugars.\nReason (R): Decomposition is
largely an oxygen-requiring process controlled by chemical composition and climatic
factors.\n\nIn the light of the above statements, choose the correct answer:
131.Consider the following statements regarding humification and mineralisation in the soil
(Question 131):\n\nI. Humification leads to the accumulation of a dark coloured amorphous
substance called humus.\nII. Humus is highly resistant to microbial action and undergoes
decomposition at an extremely slow rate.\nIII. Being colloidal in nature, humus serves as a
highly effective reservoir of plant nutrients.\nIV. Mineralisation is the process where humus is
further degraded by some microbes to release organic sugars.\n\nWhich of the statements given
above are correct according to the NCERT text?
(Question 131):\n\nI. Humification leads to the accumulation of a dark coloured amorphous
substance called humus.\nII. Humus is highly resistant to microbial action and undergoes
decomposition at an extremely slow rate.\nIII. Being colloidal in nature, humus serves as a
highly effective reservoir of plant nutrients.\nIV. Mineralisation is the process where humus is
further degraded by some microbes to release organic sugars.\n\nWhich of the statements given
above are correct according to the NCERT text?
132.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 132):\n\nAssertion (A): Decomposition rate is slower if detritus is rich
in lignin and chitin, and quicker if rich in nitrogen and sugars.\nReason (R): Decomposition is
largely an oxygen-requiring process controlled by chemical composition and climatic
factors.\n\nIn the light of the above statements, choose the correct answer:
as Reason (R) (Question 132):\n\nAssertion (A): Decomposition rate is slower if detritus is rich
in lignin and chitin, and quicker if rich in nitrogen and sugars.\nReason (R): Decomposition is
largely an oxygen-requiring process controlled by chemical composition and climatic
factors.\n\nIn the light of the above statements, choose the correct answer:
133.Consider the following statements regarding humification and mineralisation in the soil
(Question 133):\n\nI. Humification leads to the accumulation of a dark coloured amorphous
substance called humus.\nII. Humus is highly resistant to microbial action and undergoes
decomposition at an extremely slow rate.\nIII. Being colloidal in nature, humus serves as a
highly effective reservoir of plant nutrients.\nIV. Mineralisation is the process where humus is
further degraded by some microbes to release organic sugars.\n\nWhich of the statements given
above are correct according to the NCERT text?
(Question 133):\n\nI. Humification leads to the accumulation of a dark coloured amorphous
substance called humus.\nII. Humus is highly resistant to microbial action and undergoes
decomposition at an extremely slow rate.\nIII. Being colloidal in nature, humus serves as a
highly effective reservoir of plant nutrients.\nIV. Mineralisation is the process where humus is
further degraded by some microbes to release organic sugars.\n\nWhich of the statements given
above are correct according to the NCERT text?
134.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 134):\n\nAssertion (A): Decomposition rate is slower if detritus is rich
in lignin and chitin, and quicker if rich in nitrogen and sugars.\nReason (R): Decomposition is
largely an oxygen-requiring process controlled by chemical composition and climatic
factors.\n\nIn the light of the above statements, choose the correct answer:
as Reason (R) (Question 134):\n\nAssertion (A): Decomposition rate is slower if detritus is rich
in lignin and chitin, and quicker if rich in nitrogen and sugars.\nReason (R): Decomposition is
largely an oxygen-requiring process controlled by chemical composition and climatic
factors.\n\nIn the light of the above statements, choose the correct answer:
135.Consider the following statements regarding humification and mineralisation in the soil
(Question 135):\n\nI. Humification leads to the accumulation of a dark coloured amorphous
substance called humus.\nII. Humus is highly resistant to microbial action and undergoes
decomposition at an extremely slow rate.\nIII. Being colloidal in nature, humus serves as a
highly effective reservoir of plant nutrients.\nIV. Mineralisation is the process where humus is
further degraded by some microbes to release organic sugars.\n\nWhich of the statements given
above are correct according to the NCERT text?
(Question 135):\n\nI. Humification leads to the accumulation of a dark coloured amorphous
substance called humus.\nII. Humus is highly resistant to microbial action and undergoes
decomposition at an extremely slow rate.\nIII. Being colloidal in nature, humus serves as a
highly effective reservoir of plant nutrients.\nIV. Mineralisation is the process where humus is
further degraded by some microbes to release organic sugars.\n\nWhich of the statements given
above are correct according to the NCERT text?
136.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 136):\n\nAssertion (A): Decomposition rate is slower if detritus is rich
in lignin and chitin, and quicker if rich in nitrogen and sugars.\nReason (R): Decomposition is
largely an oxygen-requiring process controlled by chemical composition and climatic
factors.\n\nIn the light of the above statements, choose the correct answer:
as Reason (R) (Question 136):\n\nAssertion (A): Decomposition rate is slower if detritus is rich
in lignin and chitin, and quicker if rich in nitrogen and sugars.\nReason (R): Decomposition is
largely an oxygen-requiring process controlled by chemical composition and climatic
factors.\n\nIn the light of the above statements, choose the correct answer:
137.Consider the following statements regarding humification and mineralisation in the soil
(Question 137):\n\nI. Humification leads to the accumulation of a dark coloured amorphous
substance called humus.\nII. Humus is highly resistant to microbial action and undergoes
decomposition at an extremely slow rate.\nIII. Being colloidal in nature, humus serves as a
highly effective reservoir of plant nutrients.\nIV. Mineralisation is the process where humus is
further degraded by some microbes to release organic sugars.\n\nWhich of the statements given
above are correct according to the NCERT text?
(Question 137):\n\nI. Humification leads to the accumulation of a dark coloured amorphous
substance called humus.\nII. Humus is highly resistant to microbial action and undergoes
decomposition at an extremely slow rate.\nIII. Being colloidal in nature, humus serves as a
highly effective reservoir of plant nutrients.\nIV. Mineralisation is the process where humus is
further degraded by some microbes to release organic sugars.\n\nWhich of the statements given
above are correct according to the NCERT text?
138.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 138):\n\nAssertion (A): Decomposition rate is slower if detritus is rich
in lignin and chitin, and quicker if rich in nitrogen and sugars.\nReason (R): Decomposition is
largely an oxygen-requiring process controlled by chemical composition and climatic
factors.\n\nIn the light of the above statements, choose the correct answer:
as Reason (R) (Question 138):\n\nAssertion (A): Decomposition rate is slower if detritus is rich
in lignin and chitin, and quicker if rich in nitrogen and sugars.\nReason (R): Decomposition is
largely an oxygen-requiring process controlled by chemical composition and climatic
factors.\n\nIn the light of the above statements, choose the correct answer:
139.Consider the following statements regarding humification and mineralisation in the soil
(Question 139):\n\nI. Humification leads to the accumulation of a dark coloured amorphous
substance called humus.\nII. Humus is highly resistant to microbial action and undergoes
decomposition at an extremely slow rate.\nIII. Being colloidal in nature, humus serves as a
highly effective reservoir of plant nutrients.\nIV. Mineralisation is the process where humus is
further degraded by some microbes to release organic sugars.\n\nWhich of the statements given
above are correct according to the NCERT text?
(Question 139):\n\nI. Humification leads to the accumulation of a dark coloured amorphous
substance called humus.\nII. Humus is highly resistant to microbial action and undergoes
decomposition at an extremely slow rate.\nIII. Being colloidal in nature, humus serves as a
highly effective reservoir of plant nutrients.\nIV. Mineralisation is the process where humus is
further degraded by some microbes to release organic sugars.\n\nWhich of the statements given
above are correct according to the NCERT text?
140.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 140):\n\nAssertion (A): Decomposition rate is slower if detritus is rich
in lignin and chitin, and quicker if rich in nitrogen and sugars.\nReason (R): Decomposition is
largely an oxygen-requiring process controlled by chemical composition and climatic
factors.\n\nIn the light of the above statements, choose the correct answer:
as Reason (R) (Question 140):\n\nAssertion (A): Decomposition rate is slower if detritus is rich
in lignin and chitin, and quicker if rich in nitrogen and sugars.\nReason (R): Decomposition is
largely an oxygen-requiring process controlled by chemical composition and climatic
factors.\n\nIn the light of the above statements, choose the correct answer:
141.Consider the following statements regarding humification and mineralisation in the soil
(Question 141):\n\nI. Humification leads to the accumulation of a dark coloured amorphous
substance called humus.\nII. Humus is highly resistant to microbial action and undergoes
decomposition at an extremely slow rate.\nIII. Being colloidal in nature, humus serves as a
highly effective reservoir of plant nutrients.\nIV. Mineralisation is the process where humus is
further degraded by some microbes to release organic sugars.\n\nWhich of the statements given
above are correct according to the NCERT text?
(Question 141):\n\nI. Humification leads to the accumulation of a dark coloured amorphous
substance called humus.\nII. Humus is highly resistant to microbial action and undergoes
decomposition at an extremely slow rate.\nIII. Being colloidal in nature, humus serves as a
highly effective reservoir of plant nutrients.\nIV. Mineralisation is the process where humus is
further degraded by some microbes to release organic sugars.\n\nWhich of the statements given
above are correct according to the NCERT text?
142.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 142):\n\nAssertion (A): Decomposition rate is slower if detritus is rich
in lignin and chitin, and quicker if rich in nitrogen and sugars.\nReason (R): Decomposition is
largely an oxygen-requiring process controlled by chemical composition and climatic
factors.\n\nIn the light of the above statements, choose the correct answer:
as Reason (R) (Question 142):\n\nAssertion (A): Decomposition rate is slower if detritus is rich
in lignin and chitin, and quicker if rich in nitrogen and sugars.\nReason (R): Decomposition is
largely an oxygen-requiring process controlled by chemical composition and climatic
factors.\n\nIn the light of the above statements, choose the correct answer:
143.Consider the following statements regarding humification and mineralisation in the soil
(Question 143):\n\nI. Humification leads to the accumulation of a dark coloured amorphous
substance called humus.\nII. Humus is highly resistant to microbial action and undergoes
decomposition at an extremely slow rate.\nIII. Being colloidal in nature, humus serves as a
highly effective reservoir of plant nutrients.\nIV. Mineralisation is the process where humus is
further degraded by some microbes to release organic sugars.\n\nWhich of the statements given
above are correct according to the NCERT text?
(Question 143):\n\nI. Humification leads to the accumulation of a dark coloured amorphous
substance called humus.\nII. Humus is highly resistant to microbial action and undergoes
decomposition at an extremely slow rate.\nIII. Being colloidal in nature, humus serves as a
highly effective reservoir of plant nutrients.\nIV. Mineralisation is the process where humus is
further degraded by some microbes to release organic sugars.\n\nWhich of the statements given
above are correct according to the NCERT text?
144.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 144):\n\nAssertion (A): Decomposition rate is slower if detritus is rich
in lignin and chitin, and quicker if rich in nitrogen and sugars.\nReason (R): Decomposition is
largely an oxygen-requiring process controlled by chemical composition and climatic
factors.\n\nIn the light of the above statements, choose the correct answer:
as Reason (R) (Question 144):\n\nAssertion (A): Decomposition rate is slower if detritus is rich
in lignin and chitin, and quicker if rich in nitrogen and sugars.\nReason (R): Decomposition is
largely an oxygen-requiring process controlled by chemical composition and climatic
factors.\n\nIn the light of the above statements, choose the correct answer:
145.Consider the following statements regarding humification and mineralisation in the soil
(Question 145):\n\nI. Humification leads to the accumulation of a dark coloured amorphous
substance called humus.\nII. Humus is highly resistant to microbial action and undergoes
decomposition at an extremely slow rate.\nIII. Being colloidal in nature, humus serves as a
highly effective reservoir of plant nutrients.\nIV. Mineralisation is the process where humus is
further degraded by some microbes to release organic sugars.\n\nWhich of the statements given
above are correct according to the NCERT text?
(Question 145):\n\nI. Humification leads to the accumulation of a dark coloured amorphous
substance called humus.\nII. Humus is highly resistant to microbial action and undergoes
decomposition at an extremely slow rate.\nIII. Being colloidal in nature, humus serves as a
highly effective reservoir of plant nutrients.\nIV. Mineralisation is the process where humus is
further degraded by some microbes to release organic sugars.\n\nWhich of the statements given
above are correct according to the NCERT text?
146.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 146):\n\nAssertion (A): Decomposition rate is slower if detritus is rich
in lignin and chitin, and quicker if rich in nitrogen and sugars.\nReason (R): Decomposition is
largely an oxygen-requiring process controlled by chemical composition and climatic
factors.\n\nIn the light of the above statements, choose the correct answer:
as Reason (R) (Question 146):\n\nAssertion (A): Decomposition rate is slower if detritus is rich
in lignin and chitin, and quicker if rich in nitrogen and sugars.\nReason (R): Decomposition is
largely an oxygen-requiring process controlled by chemical composition and climatic
factors.\n\nIn the light of the above statements, choose the correct answer:
147.Consider the following statements regarding humification and mineralisation in the soil
(Question 147):\n\nI. Humification leads to the accumulation of a dark coloured amorphous
substance called humus.\nII. Humus is highly resistant to microbial action and undergoes
decomposition at an extremely slow rate.\nIII. Being colloidal in nature, humus serves as a
highly effective reservoir of plant nutrients.\nIV. Mineralisation is the process where humus is
further degraded by some microbes to release organic sugars.\n\nWhich of the statements given
above are correct according to the NCERT text?
(Question 147):\n\nI. Humification leads to the accumulation of a dark coloured amorphous
substance called humus.\nII. Humus is highly resistant to microbial action and undergoes
decomposition at an extremely slow rate.\nIII. Being colloidal in nature, humus serves as a
highly effective reservoir of plant nutrients.\nIV. Mineralisation is the process where humus is
further degraded by some microbes to release organic sugars.\n\nWhich of the statements given
above are correct according to the NCERT text?
148.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 148):\n\nAssertion (A): Decomposition rate is slower if detritus is rich
in lignin and chitin, and quicker if rich in nitrogen and sugars.\nReason (R): Decomposition is
largely an oxygen-requiring process controlled by chemical composition and climatic
factors.\n\nIn the light of the above statements, choose the correct answer:
as Reason (R) (Question 148):\n\nAssertion (A): Decomposition rate is slower if detritus is rich
in lignin and chitin, and quicker if rich in nitrogen and sugars.\nReason (R): Decomposition is
largely an oxygen-requiring process controlled by chemical composition and climatic
factors.\n\nIn the light of the above statements, choose the correct answer:
149.Consider the following statements regarding humification and mineralisation in the soil
(Question 149):\n\nI. Humification leads to the accumulation of a dark coloured amorphous
substance called humus.\nII. Humus is highly resistant to microbial action and undergoes
decomposition at an extremely slow rate.\nIII. Being colloidal in nature, humus serves as a
highly effective reservoir of plant nutrients.\nIV. Mineralisation is the process where humus is
further degraded by some microbes to release organic sugars.\n\nWhich of the statements given
above are correct according to the NCERT text?
(Question 149):\n\nI. Humification leads to the accumulation of a dark coloured amorphous
substance called humus.\nII. Humus is highly resistant to microbial action and undergoes
decomposition at an extremely slow rate.\nIII. Being colloidal in nature, humus serves as a
highly effective reservoir of plant nutrients.\nIV. Mineralisation is the process where humus is
further degraded by some microbes to release organic sugars.\n\nWhich of the statements given
above are correct according to the NCERT text?
150.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 150):\n\nAssertion (A): Decomposition rate is slower if detritus is rich
in lignin and chitin, and quicker if rich in nitrogen and sugars.\nReason (R): Decomposition is
largely an oxygen-requiring process controlled by chemical composition and climatic
factors.\n\nIn the light of the above statements, choose the correct answer:
as Reason (R) (Question 150):\n\nAssertion (A): Decomposition rate is slower if detritus is rich
in lignin and chitin, and quicker if rich in nitrogen and sugars.\nReason (R): Decomposition is
largely an oxygen-requiring process controlled by chemical composition and climatic
factors.\n\nIn the light of the above statements, choose the correct answer:
151.Consider the following statements regarding the thermodynamics and solar capture of
energy in ecosystems (Question 151):\n\nI. Of the incident solar radiation, less than 50 per cent
of it represents photosynthetically active radiation (PAR).\nII. Plants capture only 2-10 per cent
of the PAR, and this small fraction sustains the entire living world.\nIII. Unidirectional flow of
energy from the sun to producers and then to consumers obeys the First Law of
Thermodynamics.\nIV. Ecosystems are completely exempt from the Second Law of
Thermodynamics because they maintain high biological order.\n\nWhich of the statements given
above are correct according to the NCERT text?
energy in ecosystems (Question 151):\n\nI. Of the incident solar radiation, less than 50 per cent
of it represents photosynthetically active radiation (PAR).\nII. Plants capture only 2-10 per cent
of the PAR, and this small fraction sustains the entire living world.\nIII. Unidirectional flow of
energy from the sun to producers and then to consumers obeys the First Law of
Thermodynamics.\nIV. Ecosystems are completely exempt from the Second Law of
Thermodynamics because they maintain high biological order.\n\nWhich of the statements given
above are correct according to the NCERT text?
152.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 152):\n\nAssertion (A): Solar energy captured by plants represents only
a tiny fraction (1-5%) of the total incident solar radiation on Earth.\nReason (R): Plants capture
only 2-10 per cent of the photosynthetically active radiation (PAR), which itself is less than 50
per cent of the incident solar radiation.\n\nIn the light of the above statements, choose the
correct answer:
as Reason (R) (Question 152):\n\nAssertion (A): Solar energy captured by plants represents only
a tiny fraction (1-5%) of the total incident solar radiation on Earth.\nReason (R): Plants capture
only 2-10 per cent of the photosynthetically active radiation (PAR), which itself is less than 50
per cent of the incident solar radiation.\n\nIn the light of the above statements, choose the
correct answer:
153.Consider the following statements regarding the thermodynamics and solar capture of
energy in ecosystems (Question 153):\n\nI. Of the incident solar radiation, less than 50 per cent
of it represents photosynthetically active radiation (PAR).\nII. Plants capture only 2-10 per cent
of the PAR, and this small fraction sustains the entire living world.\nIII. Unidirectional flow of
energy from the sun to producers and then to consumers obeys the First Law of
Thermodynamics.\nIV. Ecosystems are completely exempt from the Second Law of
Thermodynamics because they maintain high biological order.\n\nWhich of the statements given
above are correct according to the NCERT text?
energy in ecosystems (Question 153):\n\nI. Of the incident solar radiation, less than 50 per cent
of it represents photosynthetically active radiation (PAR).\nII. Plants capture only 2-10 per cent
of the PAR, and this small fraction sustains the entire living world.\nIII. Unidirectional flow of
energy from the sun to producers and then to consumers obeys the First Law of
Thermodynamics.\nIV. Ecosystems are completely exempt from the Second Law of
Thermodynamics because they maintain high biological order.\n\nWhich of the statements given
above are correct according to the NCERT text?
154.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 154):\n\nAssertion (A): Solar energy captured by plants represents only
a tiny fraction (1-5%) of the total incident solar radiation on Earth.\nReason (R): Plants capture
only 2-10 per cent of the photosynthetically active radiation (PAR), which itself is less than 50
per cent of the incident solar radiation.\n\nIn the light of the above statements, choose the
correct answer:
as Reason (R) (Question 154):\n\nAssertion (A): Solar energy captured by plants represents only
a tiny fraction (1-5%) of the total incident solar radiation on Earth.\nReason (R): Plants capture
only 2-10 per cent of the photosynthetically active radiation (PAR), which itself is less than 50
per cent of the incident solar radiation.\n\nIn the light of the above statements, choose the
correct answer:
155.Consider the following statements regarding the thermodynamics and solar capture of
energy in ecosystems (Question 155):\n\nI. Of the incident solar radiation, less than 50 per cent
of it represents photosynthetically active radiation (PAR).\nII. Plants capture only 2-10 per cent
of the PAR, and this small fraction sustains the entire living world.\nIII. Unidirectional flow of
energy from the sun to producers and then to consumers obeys the First Law of
Thermodynamics.\nIV. Ecosystems are completely exempt from the Second Law of
Thermodynamics because they maintain high biological order.\n\nWhich of the statements given
above are correct according to the NCERT text?
energy in ecosystems (Question 155):\n\nI. Of the incident solar radiation, less than 50 per cent
of it represents photosynthetically active radiation (PAR).\nII. Plants capture only 2-10 per cent
of the PAR, and this small fraction sustains the entire living world.\nIII. Unidirectional flow of
energy from the sun to producers and then to consumers obeys the First Law of
Thermodynamics.\nIV. Ecosystems are completely exempt from the Second Law of
Thermodynamics because they maintain high biological order.\n\nWhich of the statements given
above are correct according to the NCERT text?
156.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 156):\n\nAssertion (A): Solar energy captured by plants represents only
a tiny fraction (1-5%) of the total incident solar radiation on Earth.\nReason (R): Plants capture
only 2-10 per cent of the photosynthetically active radiation (PAR), which itself is less than 50
per cent of the incident solar radiation.\n\nIn the light of the above statements, choose the
correct answer:
as Reason (R) (Question 156):\n\nAssertion (A): Solar energy captured by plants represents only
a tiny fraction (1-5%) of the total incident solar radiation on Earth.\nReason (R): Plants capture
only 2-10 per cent of the photosynthetically active radiation (PAR), which itself is less than 50
per cent of the incident solar radiation.\n\nIn the light of the above statements, choose the
correct answer:
157.Consider the following statements regarding the thermodynamics and solar capture of
energy in ecosystems (Question 157):\n\nI. Of the incident solar radiation, less than 50 per cent
of it represents photosynthetically active radiation (PAR).\nII. Plants capture only 2-10 per cent
of the PAR, and this small fraction sustains the entire living world.\nIII. Unidirectional flow of
energy from the sun to producers and then to consumers obeys the First Law of
Thermodynamics.\nIV. Ecosystems are completely exempt from the Second Law of
Thermodynamics because they maintain high biological order.\n\nWhich of the statements given
above are correct according to the NCERT text?
energy in ecosystems (Question 157):\n\nI. Of the incident solar radiation, less than 50 per cent
of it represents photosynthetically active radiation (PAR).\nII. Plants capture only 2-10 per cent
of the PAR, and this small fraction sustains the entire living world.\nIII. Unidirectional flow of
energy from the sun to producers and then to consumers obeys the First Law of
Thermodynamics.\nIV. Ecosystems are completely exempt from the Second Law of
Thermodynamics because they maintain high biological order.\n\nWhich of the statements given
above are correct according to the NCERT text?
158.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 158):\n\nAssertion (A): Solar energy captured by plants represents only
a tiny fraction (1-5%) of the total incident solar radiation on Earth.\nReason (R): Plants capture
only 2-10 per cent of the photosynthetically active radiation (PAR), which itself is less than 50
per cent of the incident solar radiation.\n\nIn the light of the above statements, choose the
correct answer:
as Reason (R) (Question 158):\n\nAssertion (A): Solar energy captured by plants represents only
a tiny fraction (1-5%) of the total incident solar radiation on Earth.\nReason (R): Plants capture
only 2-10 per cent of the photosynthetically active radiation (PAR), which itself is less than 50
per cent of the incident solar radiation.\n\nIn the light of the above statements, choose the
correct answer:
159.Consider the following statements regarding the thermodynamics and solar capture of
energy in ecosystems (Question 159):\n\nI. Of the incident solar radiation, less than 50 per cent
of it represents photosynthetically active radiation (PAR).\nII. Plants capture only 2-10 per cent
of the PAR, and this small fraction sustains the entire living world.\nIII. Unidirectional flow of
energy from the sun to producers and then to consumers obeys the First Law of
Thermodynamics.\nIV. Ecosystems are completely exempt from the Second Law of
Thermodynamics because they maintain high biological order.\n\nWhich of the statements given
above are correct according to the NCERT text?
energy in ecosystems (Question 159):\n\nI. Of the incident solar radiation, less than 50 per cent
of it represents photosynthetically active radiation (PAR).\nII. Plants capture only 2-10 per cent
of the PAR, and this small fraction sustains the entire living world.\nIII. Unidirectional flow of
energy from the sun to producers and then to consumers obeys the First Law of
Thermodynamics.\nIV. Ecosystems are completely exempt from the Second Law of
Thermodynamics because they maintain high biological order.\n\nWhich of the statements given
above are correct according to the NCERT text?
160.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 160):\n\nAssertion (A): Solar energy captured by plants represents only
a tiny fraction (1-5%) of the total incident solar radiation on Earth.\nReason (R): Plants capture
only 2-10 per cent of the photosynthetically active radiation (PAR), which itself is less than 50
per cent of the incident solar radiation.\n\nIn the light of the above statements, choose the
correct answer:
as Reason (R) (Question 160):\n\nAssertion (A): Solar energy captured by plants represents only
a tiny fraction (1-5%) of the total incident solar radiation on Earth.\nReason (R): Plants capture
only 2-10 per cent of the photosynthetically active radiation (PAR), which itself is less than 50
per cent of the incident solar radiation.\n\nIn the light of the above statements, choose the
correct answer:
161.Consider the following statements regarding the thermodynamics and solar capture of
energy in ecosystems (Question 161):\n\nI. Of the incident solar radiation, less than 50 per cent
of it represents photosynthetically active radiation (PAR).\nII. Plants capture only 2-10 per cent
of the PAR, and this small fraction sustains the entire living world.\nIII. Unidirectional flow of
energy from the sun to producers and then to consumers obeys the First Law of
Thermodynamics.\nIV. Ecosystems are completely exempt from the Second Law of
Thermodynamics because they maintain high biological order.\n\nWhich of the statements given
above are correct according to the NCERT text?
energy in ecosystems (Question 161):\n\nI. Of the incident solar radiation, less than 50 per cent
of it represents photosynthetically active radiation (PAR).\nII. Plants capture only 2-10 per cent
of the PAR, and this small fraction sustains the entire living world.\nIII. Unidirectional flow of
energy from the sun to producers and then to consumers obeys the First Law of
Thermodynamics.\nIV. Ecosystems are completely exempt from the Second Law of
Thermodynamics because they maintain high biological order.\n\nWhich of the statements given
above are correct according to the NCERT text?
162.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 162):\n\nAssertion (A): Solar energy captured by plants represents only
a tiny fraction (1-5%) of the total incident solar radiation on Earth.\nReason (R): Plants capture
only 2-10 per cent of the photosynthetically active radiation (PAR), which itself is less than 50
per cent of the incident solar radiation.\n\nIn the light of the above statements, choose the
correct answer:
as Reason (R) (Question 162):\n\nAssertion (A): Solar energy captured by plants represents only
a tiny fraction (1-5%) of the total incident solar radiation on Earth.\nReason (R): Plants capture
only 2-10 per cent of the photosynthetically active radiation (PAR), which itself is less than 50
per cent of the incident solar radiation.\n\nIn the light of the above statements, choose the
correct answer:
163.Consider the following statements regarding the thermodynamics and solar capture of
energy in ecosystems (Question 163):\n\nI. Of the incident solar radiation, less than 50 per cent
of it represents photosynthetically active radiation (PAR).\nII. Plants capture only 2-10 per cent
of the PAR, and this small fraction sustains the entire living world.\nIII. Unidirectional flow of
energy from the sun to producers and then to consumers obeys the First Law of
Thermodynamics.\nIV. Ecosystems are completely exempt from the Second Law of
Thermodynamics because they maintain high biological order.\n\nWhich of the statements given
above are correct according to the NCERT text?
energy in ecosystems (Question 163):\n\nI. Of the incident solar radiation, less than 50 per cent
of it represents photosynthetically active radiation (PAR).\nII. Plants capture only 2-10 per cent
of the PAR, and this small fraction sustains the entire living world.\nIII. Unidirectional flow of
energy from the sun to producers and then to consumers obeys the First Law of
Thermodynamics.\nIV. Ecosystems are completely exempt from the Second Law of
Thermodynamics because they maintain high biological order.\n\nWhich of the statements given
above are correct according to the NCERT text?
164.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 164):\n\nAssertion (A): Solar energy captured by plants represents only
a tiny fraction (1-5%) of the total incident solar radiation on Earth.\nReason (R): Plants capture
only 2-10 per cent of the photosynthetically active radiation (PAR), which itself is less than 50
per cent of the incident solar radiation.\n\nIn the light of the above statements, choose the
correct answer:
as Reason (R) (Question 164):\n\nAssertion (A): Solar energy captured by plants represents only
a tiny fraction (1-5%) of the total incident solar radiation on Earth.\nReason (R): Plants capture
only 2-10 per cent of the photosynthetically active radiation (PAR), which itself is less than 50
per cent of the incident solar radiation.\n\nIn the light of the above statements, choose the
correct answer:
165.Consider the following statements regarding the thermodynamics and solar capture of
energy in ecosystems (Question 165):\n\nI. Of the incident solar radiation, less than 50 per cent
of it represents photosynthetically active radiation (PAR).\nII. Plants capture only 2-10 per cent
of the PAR, and this small fraction sustains the entire living world.\nIII. Unidirectional flow of
energy from the sun to producers and then to consumers obeys the First Law of
Thermodynamics.\nIV. Ecosystems are completely exempt from the Second Law of
Thermodynamics because they maintain high biological order.\n\nWhich of the statements given
above are correct according to the NCERT text?
energy in ecosystems (Question 165):\n\nI. Of the incident solar radiation, less than 50 per cent
of it represents photosynthetically active radiation (PAR).\nII. Plants capture only 2-10 per cent
of the PAR, and this small fraction sustains the entire living world.\nIII. Unidirectional flow of
energy from the sun to producers and then to consumers obeys the First Law of
Thermodynamics.\nIV. Ecosystems are completely exempt from the Second Law of
Thermodynamics because they maintain high biological order.\n\nWhich of the statements given
above are correct according to the NCERT text?
166.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 166):\n\nAssertion (A): Solar energy captured by plants represents only
a tiny fraction (1-5%) of the total incident solar radiation on Earth.\nReason (R): Plants capture
only 2-10 per cent of the photosynthetically active radiation (PAR), which itself is less than 50
per cent of the incident solar radiation.\n\nIn the light of the above statements, choose the
correct answer:
as Reason (R) (Question 166):\n\nAssertion (A): Solar energy captured by plants represents only
a tiny fraction (1-5%) of the total incident solar radiation on Earth.\nReason (R): Plants capture
only 2-10 per cent of the photosynthetically active radiation (PAR), which itself is less than 50
per cent of the incident solar radiation.\n\nIn the light of the above statements, choose the
correct answer:
167.Consider the following statements regarding the thermodynamics and solar capture of
energy in ecosystems (Question 167):\n\nI. Of the incident solar radiation, less than 50 per cent
of it represents photosynthetically active radiation (PAR).\nII. Plants capture only 2-10 per cent
of the PAR, and this small fraction sustains the entire living world.\nIII. Unidirectional flow of
energy from the sun to producers and then to consumers obeys the First Law of
Thermodynamics.\nIV. Ecosystems are completely exempt from the Second Law of
Thermodynamics because they maintain high biological order.\n\nWhich of the statements given
above are correct according to the NCERT text?
energy in ecosystems (Question 167):\n\nI. Of the incident solar radiation, less than 50 per cent
of it represents photosynthetically active radiation (PAR).\nII. Plants capture only 2-10 per cent
of the PAR, and this small fraction sustains the entire living world.\nIII. Unidirectional flow of
energy from the sun to producers and then to consumers obeys the First Law of
Thermodynamics.\nIV. Ecosystems are completely exempt from the Second Law of
Thermodynamics because they maintain high biological order.\n\nWhich of the statements given
above are correct according to the NCERT text?
168.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 168):\n\nAssertion (A): Solar energy captured by plants represents only
a tiny fraction (1-5%) of the total incident solar radiation on Earth.\nReason (R): Plants capture
only 2-10 per cent of the photosynthetically active radiation (PAR), which itself is less than 50
per cent of the incident solar radiation.\n\nIn the light of the above statements, choose the
correct answer:
as Reason (R) (Question 168):\n\nAssertion (A): Solar energy captured by plants represents only
a tiny fraction (1-5%) of the total incident solar radiation on Earth.\nReason (R): Plants capture
only 2-10 per cent of the photosynthetically active radiation (PAR), which itself is less than 50
per cent of the incident solar radiation.\n\nIn the light of the above statements, choose the
correct answer:
169.Consider the following statements regarding the thermodynamics and solar capture of
energy in ecosystems (Question 169):\n\nI. Of the incident solar radiation, less than 50 per cent
of it represents photosynthetically active radiation (PAR).\nII. Plants capture only 2-10 per cent
of the PAR, and this small fraction sustains the entire living world.\nIII. Unidirectional flow of
energy from the sun to producers and then to consumers obeys the First Law of
Thermodynamics.\nIV. Ecosystems are completely exempt from the Second Law of
Thermodynamics because they maintain high biological order.\n\nWhich of the statements given
above are correct according to the NCERT text?
energy in ecosystems (Question 169):\n\nI. Of the incident solar radiation, less than 50 per cent
of it represents photosynthetically active radiation (PAR).\nII. Plants capture only 2-10 per cent
of the PAR, and this small fraction sustains the entire living world.\nIII. Unidirectional flow of
energy from the sun to producers and then to consumers obeys the First Law of
Thermodynamics.\nIV. Ecosystems are completely exempt from the Second Law of
Thermodynamics because they maintain high biological order.\n\nWhich of the statements given
above are correct according to the NCERT text?
170.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 170):\n\nAssertion (A): Solar energy captured by plants represents only
a tiny fraction (1-5%) of the total incident solar radiation on Earth.\nReason (R): Plants capture
only 2-10 per cent of the photosynthetically active radiation (PAR), which itself is less than 50
per cent of the incident solar radiation.\n\nIn the light of the above statements, choose the
correct answer:
as Reason (R) (Question 170):\n\nAssertion (A): Solar energy captured by plants represents only
a tiny fraction (1-5%) of the total incident solar radiation on Earth.\nReason (R): Plants capture
only 2-10 per cent of the photosynthetically active radiation (PAR), which itself is less than 50
per cent of the incident solar radiation.\n\nIn the light of the above statements, choose the
correct answer:
171.Consider the following statements regarding the thermodynamics and solar capture of
energy in ecosystems (Question 171):\n\nI. Of the incident solar radiation, less than 50 per cent
of it represents photosynthetically active radiation (PAR).\nII. Plants capture only 2-10 per cent
of the PAR, and this small fraction sustains the entire living world.\nIII. Unidirectional flow of
energy from the sun to producers and then to consumers obeys the First Law of
Thermodynamics.\nIV. Ecosystems are completely exempt from the Second Law of
Thermodynamics because they maintain high biological order.\n\nWhich of the statements given
above are correct according to the NCERT text?
energy in ecosystems (Question 171):\n\nI. Of the incident solar radiation, less than 50 per cent
of it represents photosynthetically active radiation (PAR).\nII. Plants capture only 2-10 per cent
of the PAR, and this small fraction sustains the entire living world.\nIII. Unidirectional flow of
energy from the sun to producers and then to consumers obeys the First Law of
Thermodynamics.\nIV. Ecosystems are completely exempt from the Second Law of
Thermodynamics because they maintain high biological order.\n\nWhich of the statements given
above are correct according to the NCERT text?
172.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 172):\n\nAssertion (A): Solar energy captured by plants represents only
a tiny fraction (1-5%) of the total incident solar radiation on Earth.\nReason (R): Plants capture
only 2-10 per cent of the photosynthetically active radiation (PAR), which itself is less than 50
per cent of the incident solar radiation.\n\nIn the light of the above statements, choose the
correct answer:
as Reason (R) (Question 172):\n\nAssertion (A): Solar energy captured by plants represents only
a tiny fraction (1-5%) of the total incident solar radiation on Earth.\nReason (R): Plants capture
only 2-10 per cent of the photosynthetically active radiation (PAR), which itself is less than 50
per cent of the incident solar radiation.\n\nIn the light of the above statements, choose the
correct answer:
173.Consider the following statements regarding the thermodynamics and solar capture of
energy in ecosystems (Question 173):\n\nI. Of the incident solar radiation, less than 50 per cent
of it represents photosynthetically active radiation (PAR).\nII. Plants capture only 2-10 per cent
of the PAR, and this small fraction sustains the entire living world.\nIII. Unidirectional flow of
energy from the sun to producers and then to consumers obeys the First Law of
Thermodynamics.\nIV. Ecosystems are completely exempt from the Second Law of
Thermodynamics because they maintain high biological order.\n\nWhich of the statements given
above are correct according to the NCERT text?
energy in ecosystems (Question 173):\n\nI. Of the incident solar radiation, less than 50 per cent
of it represents photosynthetically active radiation (PAR).\nII. Plants capture only 2-10 per cent
of the PAR, and this small fraction sustains the entire living world.\nIII. Unidirectional flow of
energy from the sun to producers and then to consumers obeys the First Law of
Thermodynamics.\nIV. Ecosystems are completely exempt from the Second Law of
Thermodynamics because they maintain high biological order.\n\nWhich of the statements given
above are correct according to the NCERT text?
174.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 174):\n\nAssertion (A): Solar energy captured by plants represents only
a tiny fraction (1-5%) of the total incident solar radiation on Earth.\nReason (R): Plants capture
only 2-10 per cent of the photosynthetically active radiation (PAR), which itself is less than 50
per cent of the incident solar radiation.\n\nIn the light of the above statements, choose the
correct answer:
as Reason (R) (Question 174):\n\nAssertion (A): Solar energy captured by plants represents only
a tiny fraction (1-5%) of the total incident solar radiation on Earth.\nReason (R): Plants capture
only 2-10 per cent of the photosynthetically active radiation (PAR), which itself is less than 50
per cent of the incident solar radiation.\n\nIn the light of the above statements, choose the
correct answer:
175.Consider the following statements regarding the thermodynamics and solar capture of
energy in ecosystems (Question 175):\n\nI. Of the incident solar radiation, less than 50 per cent
of it represents photosynthetically active radiation (PAR).\nII. Plants capture only 2-10 per cent
of the PAR, and this small fraction sustains the entire living world.\nIII. Unidirectional flow of
energy from the sun to producers and then to consumers obeys the First Law of
Thermodynamics.\nIV. Ecosystems are completely exempt from the Second Law of
Thermodynamics because they maintain high biological order.\n\nWhich of the statements given
above are correct according to the NCERT text?
energy in ecosystems (Question 175):\n\nI. Of the incident solar radiation, less than 50 per cent
of it represents photosynthetically active radiation (PAR).\nII. Plants capture only 2-10 per cent
of the PAR, and this small fraction sustains the entire living world.\nIII. Unidirectional flow of
energy from the sun to producers and then to consumers obeys the First Law of
Thermodynamics.\nIV. Ecosystems are completely exempt from the Second Law of
Thermodynamics because they maintain high biological order.\n\nWhich of the statements given
above are correct according to the NCERT text?
176.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 176):\n\nAssertion (A): Solar energy captured by plants represents only
a tiny fraction (1-5%) of the total incident solar radiation on Earth.\nReason (R): Plants capture
only 2-10 per cent of the photosynthetically active radiation (PAR), which itself is less than 50
per cent of the incident solar radiation.\n\nIn the light of the above statements, choose the
correct answer:
as Reason (R) (Question 176):\n\nAssertion (A): Solar energy captured by plants represents only
a tiny fraction (1-5%) of the total incident solar radiation on Earth.\nReason (R): Plants capture
only 2-10 per cent of the photosynthetically active radiation (PAR), which itself is less than 50
per cent of the incident solar radiation.\n\nIn the light of the above statements, choose the
correct answer:
177.Consider the following statements regarding the thermodynamics and solar capture of
energy in ecosystems (Question 177):\n\nI. Of the incident solar radiation, less than 50 per cent
of it represents photosynthetically active radiation (PAR).\nII. Plants capture only 2-10 per cent
of the PAR, and this small fraction sustains the entire living world.\nIII. Unidirectional flow of
energy from the sun to producers and then to consumers obeys the First Law of
Thermodynamics.\nIV. Ecosystems are completely exempt from the Second Law of
Thermodynamics because they maintain high biological order.\n\nWhich of the statements given
above are correct according to the NCERT text?
energy in ecosystems (Question 177):\n\nI. Of the incident solar radiation, less than 50 per cent
of it represents photosynthetically active radiation (PAR).\nII. Plants capture only 2-10 per cent
of the PAR, and this small fraction sustains the entire living world.\nIII. Unidirectional flow of
energy from the sun to producers and then to consumers obeys the First Law of
Thermodynamics.\nIV. Ecosystems are completely exempt from the Second Law of
Thermodynamics because they maintain high biological order.\n\nWhich of the statements given
above are correct according to the NCERT text?
178.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 178):\n\nAssertion (A): Solar energy captured by plants represents only
a tiny fraction (1-5%) of the total incident solar radiation on Earth.\nReason (R): Plants capture
only 2-10 per cent of the photosynthetically active radiation (PAR), which itself is less than 50
per cent of the incident solar radiation.\n\nIn the light of the above statements, choose the
correct answer:
as Reason (R) (Question 178):\n\nAssertion (A): Solar energy captured by plants represents only
a tiny fraction (1-5%) of the total incident solar radiation on Earth.\nReason (R): Plants capture
only 2-10 per cent of the photosynthetically active radiation (PAR), which itself is less than 50
per cent of the incident solar radiation.\n\nIn the light of the above statements, choose the
correct answer:
179.Consider the following statements regarding the thermodynamics and solar capture of
energy in ecosystems (Question 179):\n\nI. Of the incident solar radiation, less than 50 per cent
of it represents photosynthetically active radiation (PAR).\nII. Plants capture only 2-10 per cent
of the PAR, and this small fraction sustains the entire living world.\nIII. Unidirectional flow of
energy from the sun to producers and then to consumers obeys the First Law of
Thermodynamics.\nIV. Ecosystems are completely exempt from the Second Law of
Thermodynamics because they maintain high biological order.\n\nWhich of the statements given
above are correct according to the NCERT text?
energy in ecosystems (Question 179):\n\nI. Of the incident solar radiation, less than 50 per cent
of it represents photosynthetically active radiation (PAR).\nII. Plants capture only 2-10 per cent
of the PAR, and this small fraction sustains the entire living world.\nIII. Unidirectional flow of
energy from the sun to producers and then to consumers obeys the First Law of
Thermodynamics.\nIV. Ecosystems are completely exempt from the Second Law of
Thermodynamics because they maintain high biological order.\n\nWhich of the statements given
above are correct according to the NCERT text?
180.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 180):\n\nAssertion (A): Solar energy captured by plants represents only
a tiny fraction (1-5%) of the total incident solar radiation on Earth.\nReason (R): Plants capture
only 2-10 per cent of the photosynthetically active radiation (PAR), which itself is less than 50
per cent of the incident solar radiation.\n\nIn the light of the above statements, choose the
correct answer:
as Reason (R) (Question 180):\n\nAssertion (A): Solar energy captured by plants represents only
a tiny fraction (1-5%) of the total incident solar radiation on Earth.\nReason (R): Plants capture
only 2-10 per cent of the photosynthetically active radiation (PAR), which itself is less than 50
per cent of the incident solar radiation.\n\nIn the light of the above statements, choose the
correct answer:
181.Consider the following statements regarding grazing and detritus food chains (Question
181):\n\nI. In an aquatic ecosystem, the grazing food chain (GFC) is the major conduit for
energy flow.\nII. In a terrestrial ecosystem, a much larger fraction of energy flows through the
detritus food chain (DFC) than through the GFC.\nIII. The DFC begins with dead organic
matter and is made up of heterotrophic saprotrophs (fungi, bacteria).\nIV. Omnivores like
cockroaches, crows, and humans are completely excluded from GFC and DFC
structures.\n\nWhich of the statements given above are correct according to the NCERT text?
181):\n\nI. In an aquatic ecosystem, the grazing food chain (GFC) is the major conduit for
energy flow.\nII. In a terrestrial ecosystem, a much larger fraction of energy flows through the
detritus food chain (DFC) than through the GFC.\nIII. The DFC begins with dead organic
matter and is made up of heterotrophic saprotrophs (fungi, bacteria).\nIV. Omnivores like
cockroaches, crows, and humans are completely excluded from GFC and DFC
structures.\n\nWhich of the statements given above are correct according to the NCERT text?
182.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 182):\n\nAssertion (A): Dry weight biomass measurement of a species is
ecologically more accurate than fresh weight.\nReason (R): Fresh weight includes water content
which fluctuates drastically with hydration, humidity, and physiological states.\n\nIn the light of
the above statements, choose the correct answer:
as Reason (R) (Question 182):\n\nAssertion (A): Dry weight biomass measurement of a species is
ecologically more accurate than fresh weight.\nReason (R): Fresh weight includes water content
which fluctuates drastically with hydration, humidity, and physiological states.\n\nIn the light of
the above statements, choose the correct answer:
183.Consider the following statements regarding grazing and detritus food chains (Question
183):\n\nI. In an aquatic ecosystem, the grazing food chain (GFC) is the major conduit for
energy flow.\nII. In a terrestrial ecosystem, a much larger fraction of energy flows through the
detritus food chain (DFC) than through the GFC.\nIII. The DFC begins with dead organic
matter and is made up of heterotrophic saprotrophs (fungi, bacteria).\nIV. Omnivores like
cockroaches, crows, and humans are completely excluded from GFC and DFC
structures.\n\nWhich of the statements given above are correct according to the NCERT text?
183):\n\nI. In an aquatic ecosystem, the grazing food chain (GFC) is the major conduit for
energy flow.\nII. In a terrestrial ecosystem, a much larger fraction of energy flows through the
detritus food chain (DFC) than through the GFC.\nIII. The DFC begins with dead organic
matter and is made up of heterotrophic saprotrophs (fungi, bacteria).\nIV. Omnivores like
cockroaches, crows, and humans are completely excluded from GFC and DFC
structures.\n\nWhich of the statements given above are correct according to the NCERT text?
184.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 184):\n\nAssertion (A): Dry weight biomass measurement of a species is
ecologically more accurate than fresh weight.\nReason (R): Fresh weight includes water content
which fluctuates drastically with hydration, humidity, and physiological states.\n\nIn the light of
the above statements, choose the correct answer:
as Reason (R) (Question 184):\n\nAssertion (A): Dry weight biomass measurement of a species is
ecologically more accurate than fresh weight.\nReason (R): Fresh weight includes water content
which fluctuates drastically with hydration, humidity, and physiological states.\n\nIn the light of
the above statements, choose the correct answer:
185.Consider the following statements regarding grazing and detritus food chains (Question
185):\n\nI. In an aquatic ecosystem, the grazing food chain (GFC) is the major conduit for
energy flow.\nII. In a terrestrial ecosystem, a much larger fraction of energy flows through the
detritus food chain (DFC) than through the GFC.\nIII. The DFC begins with dead organic
matter and is made up of heterotrophic saprotrophs (fungi, bacteria).\nIV. Omnivores like
cockroaches, crows, and humans are completely excluded from GFC and DFC
structures.\n\nWhich of the statements given above are correct according to the NCERT text?
185):\n\nI. In an aquatic ecosystem, the grazing food chain (GFC) is the major conduit for
energy flow.\nII. In a terrestrial ecosystem, a much larger fraction of energy flows through the
detritus food chain (DFC) than through the GFC.\nIII. The DFC begins with dead organic
matter and is made up of heterotrophic saprotrophs (fungi, bacteria).\nIV. Omnivores like
cockroaches, crows, and humans are completely excluded from GFC and DFC
structures.\n\nWhich of the statements given above are correct according to the NCERT text?
186.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 186):\n\nAssertion (A): Dry weight biomass measurement of a species is
ecologically more accurate than fresh weight.\nReason (R): Fresh weight includes water content
which fluctuates drastically with hydration, humidity, and physiological states.\n\nIn the light of
the above statements, choose the correct answer:
as Reason (R) (Question 186):\n\nAssertion (A): Dry weight biomass measurement of a species is
ecologically more accurate than fresh weight.\nReason (R): Fresh weight includes water content
which fluctuates drastically with hydration, humidity, and physiological states.\n\nIn the light of
the above statements, choose the correct answer:
187.Consider the following statements regarding grazing and detritus food chains (Question
187):\n\nI. In an aquatic ecosystem, the grazing food chain (GFC) is the major conduit for
energy flow.\nII. In a terrestrial ecosystem, a much larger fraction of energy flows through the
detritus food chain (DFC) than through the GFC.\nIII. The DFC begins with dead organic
matter and is made up of heterotrophic saprotrophs (fungi, bacteria).\nIV. Omnivores like
cockroaches, crows, and humans are completely excluded from GFC and DFC
structures.\n\nWhich of the statements given above are correct according to the NCERT text?
187):\n\nI. In an aquatic ecosystem, the grazing food chain (GFC) is the major conduit for
energy flow.\nII. In a terrestrial ecosystem, a much larger fraction of energy flows through the
detritus food chain (DFC) than through the GFC.\nIII. The DFC begins with dead organic
matter and is made up of heterotrophic saprotrophs (fungi, bacteria).\nIV. Omnivores like
cockroaches, crows, and humans are completely excluded from GFC and DFC
structures.\n\nWhich of the statements given above are correct according to the NCERT text?
188.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 188):\n\nAssertion (A): Dry weight biomass measurement of a species is
ecologically more accurate than fresh weight.\nReason (R): Fresh weight includes water content
which fluctuates drastically with hydration, humidity, and physiological states.\n\nIn the light of
the above statements, choose the correct answer:
as Reason (R) (Question 188):\n\nAssertion (A): Dry weight biomass measurement of a species is
ecologically more accurate than fresh weight.\nReason (R): Fresh weight includes water content
which fluctuates drastically with hydration, humidity, and physiological states.\n\nIn the light of
the above statements, choose the correct answer:
189.Consider the following statements regarding grazing and detritus food chains (Question
189):\n\nI. In an aquatic ecosystem, the grazing food chain (GFC) is the major conduit for
energy flow.\nII. In a terrestrial ecosystem, a much larger fraction of energy flows through the
detritus food chain (DFC) than through the GFC.\nIII. The DFC begins with dead organic
matter and is made up of heterotrophic saprotrophs (fungi, bacteria).\nIV. Omnivores like
cockroaches, crows, and humans are completely excluded from GFC and DFC
structures.\n\nWhich of the statements given above are correct according to the NCERT text?
189):\n\nI. In an aquatic ecosystem, the grazing food chain (GFC) is the major conduit for
energy flow.\nII. In a terrestrial ecosystem, a much larger fraction of energy flows through the
detritus food chain (DFC) than through the GFC.\nIII. The DFC begins with dead organic
matter and is made up of heterotrophic saprotrophs (fungi, bacteria).\nIV. Omnivores like
cockroaches, crows, and humans are completely excluded from GFC and DFC
structures.\n\nWhich of the statements given above are correct according to the NCERT text?
190.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 190):\n\nAssertion (A): Dry weight biomass measurement of a species is
ecologically more accurate than fresh weight.\nReason (R): Fresh weight includes water content
which fluctuates drastically with hydration, humidity, and physiological states.\n\nIn the light of
the above statements, choose the correct answer:
as Reason (R) (Question 190):\n\nAssertion (A): Dry weight biomass measurement of a species is
ecologically more accurate than fresh weight.\nReason (R): Fresh weight includes water content
which fluctuates drastically with hydration, humidity, and physiological states.\n\nIn the light of
the above statements, choose the correct answer:
191.Consider the following statements regarding grazing and detritus food chains (Question
191):\n\nI. In an aquatic ecosystem, the grazing food chain (GFC) is the major conduit for
energy flow.\nII. In a terrestrial ecosystem, a much larger fraction of energy flows through the
detritus food chain (DFC) than through the GFC.\nIII. The DFC begins with dead organic
matter and is made up of heterotrophic saprotrophs (fungi, bacteria).\nIV. Omnivores like
cockroaches, crows, and humans are completely excluded from GFC and DFC
structures.\n\nWhich of the statements given above are correct according to the NCERT text?
191):\n\nI. In an aquatic ecosystem, the grazing food chain (GFC) is the major conduit for
energy flow.\nII. In a terrestrial ecosystem, a much larger fraction of energy flows through the
detritus food chain (DFC) than through the GFC.\nIII. The DFC begins with dead organic
matter and is made up of heterotrophic saprotrophs (fungi, bacteria).\nIV. Omnivores like
cockroaches, crows, and humans are completely excluded from GFC and DFC
structures.\n\nWhich of the statements given above are correct according to the NCERT text?
192.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 192):\n\nAssertion (A): Dry weight biomass measurement of a species is
ecologically more accurate than fresh weight.\nReason (R): Fresh weight includes water content
which fluctuates drastically with hydration, humidity, and physiological states.\n\nIn the light of
the above statements, choose the correct answer:
as Reason (R) (Question 192):\n\nAssertion (A): Dry weight biomass measurement of a species is
ecologically more accurate than fresh weight.\nReason (R): Fresh weight includes water content
which fluctuates drastically with hydration, humidity, and physiological states.\n\nIn the light of
the above statements, choose the correct answer:
193.Consider the following statements regarding grazing and detritus food chains (Question
193):\n\nI. In an aquatic ecosystem, the grazing food chain (GFC) is the major conduit for
energy flow.\nII. In a terrestrial ecosystem, a much larger fraction of energy flows through the
detritus food chain (DFC) than through the GFC.\nIII. The DFC begins with dead organic
matter and is made up of heterotrophic saprotrophs (fungi, bacteria).\nIV. Omnivores like
cockroaches, crows, and humans are completely excluded from GFC and DFC
structures.\n\nWhich of the statements given above are correct according to the NCERT text?
193):\n\nI. In an aquatic ecosystem, the grazing food chain (GFC) is the major conduit for
energy flow.\nII. In a terrestrial ecosystem, a much larger fraction of energy flows through the
detritus food chain (DFC) than through the GFC.\nIII. The DFC begins with dead organic
matter and is made up of heterotrophic saprotrophs (fungi, bacteria).\nIV. Omnivores like
cockroaches, crows, and humans are completely excluded from GFC and DFC
structures.\n\nWhich of the statements given above are correct according to the NCERT text?
194.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 194):\n\nAssertion (A): Dry weight biomass measurement of a species is
ecologically more accurate than fresh weight.\nReason (R): Fresh weight includes water content
which fluctuates drastically with hydration, humidity, and physiological states.\n\nIn the light of
the above statements, choose the correct answer:
as Reason (R) (Question 194):\n\nAssertion (A): Dry weight biomass measurement of a species is
ecologically more accurate than fresh weight.\nReason (R): Fresh weight includes water content
which fluctuates drastically with hydration, humidity, and physiological states.\n\nIn the light of
the above statements, choose the correct answer:
195.Consider the following statements regarding grazing and detritus food chains (Question
195):\n\nI. In an aquatic ecosystem, the grazing food chain (GFC) is the major conduit for
energy flow.\nII. In a terrestrial ecosystem, a much larger fraction of energy flows through the
detritus food chain (DFC) than through the GFC.\nIII. The DFC begins with dead organic
matter and is made up of heterotrophic saprotrophs (fungi, bacteria).\nIV. Omnivores like
cockroaches, crows, and humans are completely excluded from GFC and DFC
structures.\n\nWhich of the statements given above are correct according to the NCERT text?
195):\n\nI. In an aquatic ecosystem, the grazing food chain (GFC) is the major conduit for
energy flow.\nII. In a terrestrial ecosystem, a much larger fraction of energy flows through the
detritus food chain (DFC) than through the GFC.\nIII. The DFC begins with dead organic
matter and is made up of heterotrophic saprotrophs (fungi, bacteria).\nIV. Omnivores like
cockroaches, crows, and humans are completely excluded from GFC and DFC
structures.\n\nWhich of the statements given above are correct according to the NCERT text?
196.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 196):\n\nAssertion (A): Dry weight biomass measurement of a species is
ecologically more accurate than fresh weight.\nReason (R): Fresh weight includes water content
which fluctuates drastically with hydration, humidity, and physiological states.\n\nIn the light of
the above statements, choose the correct answer:
as Reason (R) (Question 196):\n\nAssertion (A): Dry weight biomass measurement of a species is
ecologically more accurate than fresh weight.\nReason (R): Fresh weight includes water content
which fluctuates drastically with hydration, humidity, and physiological states.\n\nIn the light of
the above statements, choose the correct answer:
197.Consider the following statements regarding grazing and detritus food chains (Question
197):\n\nI. In an aquatic ecosystem, the grazing food chain (GFC) is the major conduit for
energy flow.\nII. In a terrestrial ecosystem, a much larger fraction of energy flows through the
detritus food chain (DFC) than through the GFC.\nIII. The DFC begins with dead organic
matter and is made up of heterotrophic saprotrophs (fungi, bacteria).\nIV. Omnivores like
cockroaches, crows, and humans are completely excluded from GFC and DFC
structures.\n\nWhich of the statements given above are correct according to the NCERT text?
197):\n\nI. In an aquatic ecosystem, the grazing food chain (GFC) is the major conduit for
energy flow.\nII. In a terrestrial ecosystem, a much larger fraction of energy flows through the
detritus food chain (DFC) than through the GFC.\nIII. The DFC begins with dead organic
matter and is made up of heterotrophic saprotrophs (fungi, bacteria).\nIV. Omnivores like
cockroaches, crows, and humans are completely excluded from GFC and DFC
structures.\n\nWhich of the statements given above are correct according to the NCERT text?
198.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 198):\n\nAssertion (A): Dry weight biomass measurement of a species is
ecologically more accurate than fresh weight.\nReason (R): Fresh weight includes water content
which fluctuates drastically with hydration, humidity, and physiological states.\n\nIn the light of
the above statements, choose the correct answer:
as Reason (R) (Question 198):\n\nAssertion (A): Dry weight biomass measurement of a species is
ecologically more accurate than fresh weight.\nReason (R): Fresh weight includes water content
which fluctuates drastically with hydration, humidity, and physiological states.\n\nIn the light of
the above statements, choose the correct answer:
199.Consider the following statements regarding grazing and detritus food chains (Question
199):\n\nI. In an aquatic ecosystem, the grazing food chain (GFC) is the major conduit for
energy flow.\nII. In a terrestrial ecosystem, a much larger fraction of energy flows through the
detritus food chain (DFC) than through the GFC.\nIII. The DFC begins with dead organic
matter and is made up of heterotrophic saprotrophs (fungi, bacteria).\nIV. Omnivores like
cockroaches, crows, and humans are completely excluded from GFC and DFC
structures.\n\nWhich of the statements given above are correct according to the NCERT text?
199):\n\nI. In an aquatic ecosystem, the grazing food chain (GFC) is the major conduit for
energy flow.\nII. In a terrestrial ecosystem, a much larger fraction of energy flows through the
detritus food chain (DFC) than through the GFC.\nIII. The DFC begins with dead organic
matter and is made up of heterotrophic saprotrophs (fungi, bacteria).\nIV. Omnivores like
cockroaches, crows, and humans are completely excluded from GFC and DFC
structures.\n\nWhich of the statements given above are correct according to the NCERT text?
200.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 200):\n\nAssertion (A): Dry weight biomass measurement of a species is
ecologically more accurate than fresh weight.\nReason (R): Fresh weight includes water content
which fluctuates drastically with hydration, humidity, and physiological states.\n\nIn the light of
the above statements, choose the correct answer:
as Reason (R) (Question 200):\n\nAssertion (A): Dry weight biomass measurement of a species is
ecologically more accurate than fresh weight.\nReason (R): Fresh weight includes water content
which fluctuates drastically with hydration, humidity, and physiological states.\n\nIn the light of
the above statements, choose the correct answer:
201.Consider the following statements regarding grazing and detritus food chains (Question
201):\n\nI. In an aquatic ecosystem, the grazing food chain (GFC) is the major conduit for
energy flow.\nII. In a terrestrial ecosystem, a much larger fraction of energy flows through the
detritus food chain (DFC) than through the GFC.\nIII. The DFC begins with dead organic
matter and is made up of heterotrophic saprotrophs (fungi, bacteria).\nIV. Omnivores like
cockroaches, crows, and humans are completely excluded from GFC and DFC
structures.\n\nWhich of the statements given above are correct according to the NCERT text?
201):\n\nI. In an aquatic ecosystem, the grazing food chain (GFC) is the major conduit for
energy flow.\nII. In a terrestrial ecosystem, a much larger fraction of energy flows through the
detritus food chain (DFC) than through the GFC.\nIII. The DFC begins with dead organic
matter and is made up of heterotrophic saprotrophs (fungi, bacteria).\nIV. Omnivores like
cockroaches, crows, and humans are completely excluded from GFC and DFC
structures.\n\nWhich of the statements given above are correct according to the NCERT text?
202.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 202):\n\nAssertion (A): Dry weight biomass measurement of a species is
ecologically more accurate than fresh weight.\nReason (R): Fresh weight includes water content
which fluctuates drastically with hydration, humidity, and physiological states.\n\nIn the light of
the above statements, choose the correct answer:
as Reason (R) (Question 202):\n\nAssertion (A): Dry weight biomass measurement of a species is
ecologically more accurate than fresh weight.\nReason (R): Fresh weight includes water content
which fluctuates drastically with hydration, humidity, and physiological states.\n\nIn the light of
the above statements, choose the correct answer:
203.Consider the following statements regarding grazing and detritus food chains (Question
203):\n\nI. In an aquatic ecosystem, the grazing food chain (GFC) is the major conduit for
energy flow.\nII. In a terrestrial ecosystem, a much larger fraction of energy flows through the
detritus food chain (DFC) than through the GFC.\nIII. The DFC begins with dead organic
matter and is made up of heterotrophic saprotrophs (fungi, bacteria).\nIV. Omnivores like
cockroaches, crows, and humans are completely excluded from GFC and DFC
structures.\n\nWhich of the statements given above are correct according to the NCERT text?
203):\n\nI. In an aquatic ecosystem, the grazing food chain (GFC) is the major conduit for
energy flow.\nII. In a terrestrial ecosystem, a much larger fraction of energy flows through the
detritus food chain (DFC) than through the GFC.\nIII. The DFC begins with dead organic
matter and is made up of heterotrophic saprotrophs (fungi, bacteria).\nIV. Omnivores like
cockroaches, crows, and humans are completely excluded from GFC and DFC
structures.\n\nWhich of the statements given above are correct according to the NCERT text?
204.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 204):\n\nAssertion (A): Dry weight biomass measurement of a species is
ecologically more accurate than fresh weight.\nReason (R): Fresh weight includes water content
which fluctuates drastically with hydration, humidity, and physiological states.\n\nIn the light of
the above statements, choose the correct answer:
as Reason (R) (Question 204):\n\nAssertion (A): Dry weight biomass measurement of a species is
ecologically more accurate than fresh weight.\nReason (R): Fresh weight includes water content
which fluctuates drastically with hydration, humidity, and physiological states.\n\nIn the light of
the above statements, choose the correct answer:
205.Consider the following statements regarding grazing and detritus food chains (Question
205):\n\nI. In an aquatic ecosystem, the grazing food chain (GFC) is the major conduit for
energy flow.\nII. In a terrestrial ecosystem, a much larger fraction of energy flows through the
detritus food chain (DFC) than through the GFC.\nIII. The DFC begins with dead organic
matter and is made up of heterotrophic saprotrophs (fungi, bacteria).\nIV. Omnivores like
cockroaches, crows, and humans are completely excluded from GFC and DFC
structures.\n\nWhich of the statements given above are correct according to the NCERT text?
205):\n\nI. In an aquatic ecosystem, the grazing food chain (GFC) is the major conduit for
energy flow.\nII. In a terrestrial ecosystem, a much larger fraction of energy flows through the
detritus food chain (DFC) than through the GFC.\nIII. The DFC begins with dead organic
matter and is made up of heterotrophic saprotrophs (fungi, bacteria).\nIV. Omnivores like
cockroaches, crows, and humans are completely excluded from GFC and DFC
structures.\n\nWhich of the statements given above are correct according to the NCERT text?
206.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 206):\n\nAssertion (A): Dry weight biomass measurement of a species is
ecologically more accurate than fresh weight.\nReason (R): Fresh weight includes water content
which fluctuates drastically with hydration, humidity, and physiological states.\n\nIn the light of
the above statements, choose the correct answer:
as Reason (R) (Question 206):\n\nAssertion (A): Dry weight biomass measurement of a species is
ecologically more accurate than fresh weight.\nReason (R): Fresh weight includes water content
which fluctuates drastically with hydration, humidity, and physiological states.\n\nIn the light of
the above statements, choose the correct answer:
207.Consider the following statements regarding grazing and detritus food chains (Question
207):\n\nI. In an aquatic ecosystem, the grazing food chain (GFC) is the major conduit for
energy flow.\nII. In a terrestrial ecosystem, a much larger fraction of energy flows through the
detritus food chain (DFC) than through the GFC.\nIII. The DFC begins with dead organic
matter and is made up of heterotrophic saprotrophs (fungi, bacteria).\nIV. Omnivores like
cockroaches, crows, and humans are completely excluded from GFC and DFC
structures.\n\nWhich of the statements given above are correct according to the NCERT text?
207):\n\nI. In an aquatic ecosystem, the grazing food chain (GFC) is the major conduit for
energy flow.\nII. In a terrestrial ecosystem, a much larger fraction of energy flows through the
detritus food chain (DFC) than through the GFC.\nIII. The DFC begins with dead organic
matter and is made up of heterotrophic saprotrophs (fungi, bacteria).\nIV. Omnivores like
cockroaches, crows, and humans are completely excluded from GFC and DFC
structures.\n\nWhich of the statements given above are correct according to the NCERT text?
208.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 208):\n\nAssertion (A): Dry weight biomass measurement of a species is
ecologically more accurate than fresh weight.\nReason (R): Fresh weight includes water content
which fluctuates drastically with hydration, humidity, and physiological states.\n\nIn the light of
the above statements, choose the correct answer:
as Reason (R) (Question 208):\n\nAssertion (A): Dry weight biomass measurement of a species is
ecologically more accurate than fresh weight.\nReason (R): Fresh weight includes water content
which fluctuates drastically with hydration, humidity, and physiological states.\n\nIn the light of
the above statements, choose the correct answer:
209.Consider the following statements regarding grazing and detritus food chains (Question
209):\n\nI. In an aquatic ecosystem, the grazing food chain (GFC) is the major conduit for
energy flow.\nII. In a terrestrial ecosystem, a much larger fraction of energy flows through the
detritus food chain (DFC) than through the GFC.\nIII. The DFC begins with dead organic
matter and is made up of heterotrophic saprotrophs (fungi, bacteria).\nIV. Omnivores like
cockroaches, crows, and humans are completely excluded from GFC and DFC
structures.\n\nWhich of the statements given above are correct according to the NCERT text?
209):\n\nI. In an aquatic ecosystem, the grazing food chain (GFC) is the major conduit for
energy flow.\nII. In a terrestrial ecosystem, a much larger fraction of energy flows through the
detritus food chain (DFC) than through the GFC.\nIII. The DFC begins with dead organic
matter and is made up of heterotrophic saprotrophs (fungi, bacteria).\nIV. Omnivores like
cockroaches, crows, and humans are completely excluded from GFC and DFC
structures.\n\nWhich of the statements given above are correct according to the NCERT text?
210.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 210):\n\nAssertion (A): Dry weight biomass measurement of a species is
ecologically more accurate than fresh weight.\nReason (R): Fresh weight includes water content
which fluctuates drastically with hydration, humidity, and physiological states.\n\nIn the light of
the above statements, choose the correct answer:
as Reason (R) (Question 210):\n\nAssertion (A): Dry weight biomass measurement of a species is
ecologically more accurate than fresh weight.\nReason (R): Fresh weight includes water content
which fluctuates drastically with hydration, humidity, and physiological states.\n\nIn the light of
the above statements, choose the correct answer:
211.Consider the following statements regarding the exceptions, limitations, and summary
concepts of ecological pyramids (Question 211):\n\nI. In most ecosystems, all pyramids of
numbers, biomass, and energy are upright.\nII. The pyramid of biomass in the sea is generally
inverted because the biomass of fishes far exceeds that of phytoplankton.\nIII. The pyramid of
energy is always upright and can never be inverted under any circumstances.\nIV. Saprophytes
are given the most prominent position at the base of ecological pyramids in NCERT.\n\nWhich
of the statements given above are correct according to the NCERT text?
concepts of ecological pyramids (Question 211):\n\nI. In most ecosystems, all pyramids of
numbers, biomass, and energy are upright.\nII. The pyramid of biomass in the sea is generally
inverted because the biomass of fishes far exceeds that of phytoplankton.\nIII. The pyramid of
energy is always upright and can never be inverted under any circumstances.\nIV. Saprophytes
are given the most prominent position at the base of ecological pyramids in NCERT.\n\nWhich
of the statements given above are correct according to the NCERT text?
212.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 212):\n\nAssertion (A): Atmosphere or hydrosphere represents the
reservoir for the gaseous type of nutrient cycle (carbon).\nReason (R): The storage and
movement of nutrient elements through the various components of the ecosystem is called
nutrient cycling.\n\nIn the light of the above statements, choose the correct answer:
as Reason (R) (Question 212):\n\nAssertion (A): Atmosphere or hydrosphere represents the
reservoir for the gaseous type of nutrient cycle (carbon).\nReason (R): The storage and
movement of nutrient elements through the various components of the ecosystem is called
nutrient cycling.\n\nIn the light of the above statements, choose the correct answer:
213.Consider the following statements regarding the exceptions, limitations, and summary
concepts of ecological pyramids (Question 213):\n\nI. In most ecosystems, all pyramids of
numbers, biomass, and energy are upright.\nII. The pyramid of biomass in the sea is generally
inverted because the biomass of fishes far exceeds that of phytoplankton.\nIII. The pyramid of
energy is always upright and can never be inverted under any circumstances.\nIV. Saprophytes
are given the most prominent position at the base of ecological pyramids in NCERT.\n\nWhich
of the statements given above are correct according to the NCERT text?
concepts of ecological pyramids (Question 213):\n\nI. In most ecosystems, all pyramids of
numbers, biomass, and energy are upright.\nII. The pyramid of biomass in the sea is generally
inverted because the biomass of fishes far exceeds that of phytoplankton.\nIII. The pyramid of
energy is always upright and can never be inverted under any circumstances.\nIV. Saprophytes
are given the most prominent position at the base of ecological pyramids in NCERT.\n\nWhich
of the statements given above are correct according to the NCERT text?
214.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 214):\n\nAssertion (A): Atmosphere or hydrosphere represents the
reservoir for the gaseous type of nutrient cycle (carbon).\nReason (R): The storage and
movement of nutrient elements through the various components of the ecosystem is called
nutrient cycling.\n\nIn the light of the above statements, choose the correct answer:
as Reason (R) (Question 214):\n\nAssertion (A): Atmosphere or hydrosphere represents the
reservoir for the gaseous type of nutrient cycle (carbon).\nReason (R): The storage and
movement of nutrient elements through the various components of the ecosystem is called
nutrient cycling.\n\nIn the light of the above statements, choose the correct answer:
215.Consider the following statements regarding the exceptions, limitations, and summary
concepts of ecological pyramids (Question 215):\n\nI. In most ecosystems, all pyramids of
numbers, biomass, and energy are upright.\nII. The pyramid of biomass in the sea is generally
inverted because the biomass of fishes far exceeds that of phytoplankton.\nIII. The pyramid of
energy is always upright and can never be inverted under any circumstances.\nIV. Saprophytes
are given the most prominent position at the base of ecological pyramids in NCERT.\n\nWhich
of the statements given above are correct according to the NCERT text?
concepts of ecological pyramids (Question 215):\n\nI. In most ecosystems, all pyramids of
numbers, biomass, and energy are upright.\nII. The pyramid of biomass in the sea is generally
inverted because the biomass of fishes far exceeds that of phytoplankton.\nIII. The pyramid of
energy is always upright and can never be inverted under any circumstances.\nIV. Saprophytes
are given the most prominent position at the base of ecological pyramids in NCERT.\n\nWhich
of the statements given above are correct according to the NCERT text?
216.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 216):\n\nAssertion (A): Atmosphere or hydrosphere represents the
reservoir for the gaseous type of nutrient cycle (carbon).\nReason (R): The storage and
movement of nutrient elements through the various components of the ecosystem is called
nutrient cycling.\n\nIn the light of the above statements, choose the correct answer:
as Reason (R) (Question 216):\n\nAssertion (A): Atmosphere or hydrosphere represents the
reservoir for the gaseous type of nutrient cycle (carbon).\nReason (R): The storage and
movement of nutrient elements through the various components of the ecosystem is called
nutrient cycling.\n\nIn the light of the above statements, choose the correct answer:
217.Consider the following statements regarding the exceptions, limitations, and summary
concepts of ecological pyramids (Question 217):\n\nI. In most ecosystems, all pyramids of
numbers, biomass, and energy are upright.\nII. The pyramid of biomass in the sea is generally
inverted because the biomass of fishes far exceeds that of phytoplankton.\nIII. The pyramid of
energy is always upright and can never be inverted under any circumstances.\nIV. Saprophytes
are given the most prominent position at the base of ecological pyramids in NCERT.\n\nWhich
of the statements given above are correct according to the NCERT text?
concepts of ecological pyramids (Question 217):\n\nI. In most ecosystems, all pyramids of
numbers, biomass, and energy are upright.\nII. The pyramid of biomass in the sea is generally
inverted because the biomass of fishes far exceeds that of phytoplankton.\nIII. The pyramid of
energy is always upright and can never be inverted under any circumstances.\nIV. Saprophytes
are given the most prominent position at the base of ecological pyramids in NCERT.\n\nWhich
of the statements given above are correct according to the NCERT text?
218.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 218):\n\nAssertion (A): Atmosphere or hydrosphere represents the
reservoir for the gaseous type of nutrient cycle (carbon).\nReason (R): The storage and
movement of nutrient elements through the various components of the ecosystem is called
nutrient cycling.\n\nIn the light of the above statements, choose the correct answer:
as Reason (R) (Question 218):\n\nAssertion (A): Atmosphere or hydrosphere represents the
reservoir for the gaseous type of nutrient cycle (carbon).\nReason (R): The storage and
movement of nutrient elements through the various components of the ecosystem is called
nutrient cycling.\n\nIn the light of the above statements, choose the correct answer:
219.Consider the following statements regarding the exceptions, limitations, and summary
concepts of ecological pyramids (Question 219):\n\nI. In most ecosystems, all pyramids of
numbers, biomass, and energy are upright.\nII. The pyramid of biomass in the sea is generally
inverted because the biomass of fishes far exceeds that of phytoplankton.\nIII. The pyramid of
energy is always upright and can never be inverted under any circumstances.\nIV. Saprophytes
are given the most prominent position at the base of ecological pyramids in NCERT.\n\nWhich
of the statements given above are correct according to the NCERT text?
concepts of ecological pyramids (Question 219):\n\nI. In most ecosystems, all pyramids of
numbers, biomass, and energy are upright.\nII. The pyramid of biomass in the sea is generally
inverted because the biomass of fishes far exceeds that of phytoplankton.\nIII. The pyramid of
energy is always upright and can never be inverted under any circumstances.\nIV. Saprophytes
are given the most prominent position at the base of ecological pyramids in NCERT.\n\nWhich
of the statements given above are correct according to the NCERT text?
220.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 220):\n\nAssertion (A): Atmosphere or hydrosphere represents the
reservoir for the gaseous type of nutrient cycle (carbon).\nReason (R): The storage and
movement of nutrient elements through the various components of the ecosystem is called
nutrient cycling.\n\nIn the light of the above statements, choose the correct answer:
as Reason (R) (Question 220):\n\nAssertion (A): Atmosphere or hydrosphere represents the
reservoir for the gaseous type of nutrient cycle (carbon).\nReason (R): The storage and
movement of nutrient elements through the various components of the ecosystem is called
nutrient cycling.\n\nIn the light of the above statements, choose the correct answer:
221.Consider the following statements regarding the exceptions, limitations, and summary
concepts of ecological pyramids (Question 221):\n\nI. In most ecosystems, all pyramids of
numbers, biomass, and energy are upright.\nII. The pyramid of biomass in the sea is generally
inverted because the biomass of fishes far exceeds that of phytoplankton.\nIII. The pyramid of
energy is always upright and can never be inverted under any circumstances.\nIV. Saprophytes
are given the most prominent position at the base of ecological pyramids in NCERT.\n\nWhich
of the statements given above are correct according to the NCERT text?
concepts of ecological pyramids (Question 221):\n\nI. In most ecosystems, all pyramids of
numbers, biomass, and energy are upright.\nII. The pyramid of biomass in the sea is generally
inverted because the biomass of fishes far exceeds that of phytoplankton.\nIII. The pyramid of
energy is always upright and can never be inverted under any circumstances.\nIV. Saprophytes
are given the most prominent position at the base of ecological pyramids in NCERT.\n\nWhich
of the statements given above are correct according to the NCERT text?
222.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 222):\n\nAssertion (A): Atmosphere or hydrosphere represents the
reservoir for the gaseous type of nutrient cycle (carbon).\nReason (R): The storage and
movement of nutrient elements through the various components of the ecosystem is called
nutrient cycling.\n\nIn the light of the above statements, choose the correct answer:
as Reason (R) (Question 222):\n\nAssertion (A): Atmosphere or hydrosphere represents the
reservoir for the gaseous type of nutrient cycle (carbon).\nReason (R): The storage and
movement of nutrient elements through the various components of the ecosystem is called
nutrient cycling.\n\nIn the light of the above statements, choose the correct answer:
223.Consider the following statements regarding the exceptions, limitations, and summary
concepts of ecological pyramids (Question 223):\n\nI. In most ecosystems, all pyramids of
numbers, biomass, and energy are upright.\nII. The pyramid of biomass in the sea is generally
inverted because the biomass of fishes far exceeds that of phytoplankton.\nIII. The pyramid of
energy is always upright and can never be inverted under any circumstances.\nIV. Saprophytes
are given the most prominent position at the base of ecological pyramids in NCERT.\n\nWhich
of the statements given above are correct according to the NCERT text?
concepts of ecological pyramids (Question 223):\n\nI. In most ecosystems, all pyramids of
numbers, biomass, and energy are upright.\nII. The pyramid of biomass in the sea is generally
inverted because the biomass of fishes far exceeds that of phytoplankton.\nIII. The pyramid of
energy is always upright and can never be inverted under any circumstances.\nIV. Saprophytes
are given the most prominent position at the base of ecological pyramids in NCERT.\n\nWhich
of the statements given above are correct according to the NCERT text?
224.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 224):\n\nAssertion (A): Atmosphere or hydrosphere represents the
reservoir for the gaseous type of nutrient cycle (carbon).\nReason (R): The storage and
movement of nutrient elements through the various components of the ecosystem is called
nutrient cycling.\n\nIn the light of the above statements, choose the correct answer:
as Reason (R) (Question 224):\n\nAssertion (A): Atmosphere or hydrosphere represents the
reservoir for the gaseous type of nutrient cycle (carbon).\nReason (R): The storage and
movement of nutrient elements through the various components of the ecosystem is called
nutrient cycling.\n\nIn the light of the above statements, choose the correct answer:
225.Consider the following statements regarding the exceptions, limitations, and summary
concepts of ecological pyramids (Question 225):\n\nI. In most ecosystems, all pyramids of
numbers, biomass, and energy are upright.\nII. The pyramid of biomass in the sea is generally
inverted because the biomass of fishes far exceeds that of phytoplankton.\nIII. The pyramid of
energy is always upright and can never be inverted under any circumstances.\nIV. Saprophytes
are given the most prominent position at the base of ecological pyramids in NCERT.\n\nWhich
of the statements given above are correct according to the NCERT text?
concepts of ecological pyramids (Question 225):\n\nI. In most ecosystems, all pyramids of
numbers, biomass, and energy are upright.\nII. The pyramid of biomass in the sea is generally
inverted because the biomass of fishes far exceeds that of phytoplankton.\nIII. The pyramid of
energy is always upright and can never be inverted under any circumstances.\nIV. Saprophytes
are given the most prominent position at the base of ecological pyramids in NCERT.\n\nWhich
of the statements given above are correct according to the NCERT text?
226.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 226):\n\nAssertion (A): Atmosphere or hydrosphere represents the
reservoir for the gaseous type of nutrient cycle (carbon).\nReason (R): The storage and
movement of nutrient elements through the various components of the ecosystem is called
nutrient cycling.\n\nIn the light of the above statements, choose the correct answer:
as Reason (R) (Question 226):\n\nAssertion (A): Atmosphere or hydrosphere represents the
reservoir for the gaseous type of nutrient cycle (carbon).\nReason (R): The storage and
movement of nutrient elements through the various components of the ecosystem is called
nutrient cycling.\n\nIn the light of the above statements, choose the correct answer:
227.Consider the following statements regarding the exceptions, limitations, and summary
concepts of ecological pyramids (Question 227):\n\nI. In most ecosystems, all pyramids of
numbers, biomass, and energy are upright.\nII. The pyramid of biomass in the sea is generally
inverted because the biomass of fishes far exceeds that of phytoplankton.\nIII. The pyramid of
energy is always upright and can never be inverted under any circumstances.\nIV. Saprophytes
are given the most prominent position at the base of ecological pyramids in NCERT.\n\nWhich
of the statements given above are correct according to the NCERT text?
concepts of ecological pyramids (Question 227):\n\nI. In most ecosystems, all pyramids of
numbers, biomass, and energy are upright.\nII. The pyramid of biomass in the sea is generally
inverted because the biomass of fishes far exceeds that of phytoplankton.\nIII. The pyramid of
energy is always upright and can never be inverted under any circumstances.\nIV. Saprophytes
are given the most prominent position at the base of ecological pyramids in NCERT.\n\nWhich
of the statements given above are correct according to the NCERT text?
228.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 228):\n\nAssertion (A): Atmosphere or hydrosphere represents the
reservoir for the gaseous type of nutrient cycle (carbon).\nReason (R): The storage and
movement of nutrient elements through the various components of the ecosystem is called
nutrient cycling.\n\nIn the light of the above statements, choose the correct answer:
as Reason (R) (Question 228):\n\nAssertion (A): Atmosphere or hydrosphere represents the
reservoir for the gaseous type of nutrient cycle (carbon).\nReason (R): The storage and
movement of nutrient elements through the various components of the ecosystem is called
nutrient cycling.\n\nIn the light of the above statements, choose the correct answer:
229.Consider the following statements regarding the exceptions, limitations, and summary
concepts of ecological pyramids (Question 229):\n\nI. In most ecosystems, all pyramids of
numbers, biomass, and energy are upright.\nII. The pyramid of biomass in the sea is generally
inverted because the biomass of fishes far exceeds that of phytoplankton.\nIII. The pyramid of
energy is always upright and can never be inverted under any circumstances.\nIV. Saprophytes
are given the most prominent position at the base of ecological pyramids in NCERT.\n\nWhich
of the statements given above are correct according to the NCERT text?
concepts of ecological pyramids (Question 229):\n\nI. In most ecosystems, all pyramids of
numbers, biomass, and energy are upright.\nII. The pyramid of biomass in the sea is generally
inverted because the biomass of fishes far exceeds that of phytoplankton.\nIII. The pyramid of
energy is always upright and can never be inverted under any circumstances.\nIV. Saprophytes
are given the most prominent position at the base of ecological pyramids in NCERT.\n\nWhich
of the statements given above are correct according to the NCERT text?
230.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 230):\n\nAssertion (A): Atmosphere or hydrosphere represents the
reservoir for the gaseous type of nutrient cycle (carbon).\nReason (R): The storage and
movement of nutrient elements through the various components of the ecosystem is called
nutrient cycling.\n\nIn the light of the above statements, choose the correct answer:
as Reason (R) (Question 230):\n\nAssertion (A): Atmosphere or hydrosphere represents the
reservoir for the gaseous type of nutrient cycle (carbon).\nReason (R): The storage and
movement of nutrient elements through the various components of the ecosystem is called
nutrient cycling.\n\nIn the light of the above statements, choose the correct answer:
231.Consider the following statements regarding the exceptions, limitations, and summary
concepts of ecological pyramids (Question 231):\n\nI. In most ecosystems, all pyramids of
numbers, biomass, and energy are upright.\nII. The pyramid of biomass in the sea is generally
inverted because the biomass of fishes far exceeds that of phytoplankton.\nIII. The pyramid of
energy is always upright and can never be inverted under any circumstances.\nIV. Saprophytes
are given the most prominent position at the base of ecological pyramids in NCERT.\n\nWhich
of the statements given above are correct according to the NCERT text?
concepts of ecological pyramids (Question 231):\n\nI. In most ecosystems, all pyramids of
numbers, biomass, and energy are upright.\nII. The pyramid of biomass in the sea is generally
inverted because the biomass of fishes far exceeds that of phytoplankton.\nIII. The pyramid of
energy is always upright and can never be inverted under any circumstances.\nIV. Saprophytes
are given the most prominent position at the base of ecological pyramids in NCERT.\n\nWhich
of the statements given above are correct according to the NCERT text?
232.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 232):\n\nAssertion (A): Atmosphere or hydrosphere represents the
reservoir for the gaseous type of nutrient cycle (carbon).\nReason (R): The storage and
movement of nutrient elements through the various components of the ecosystem is called
nutrient cycling.\n\nIn the light of the above statements, choose the correct answer:
as Reason (R) (Question 232):\n\nAssertion (A): Atmosphere or hydrosphere represents the
reservoir for the gaseous type of nutrient cycle (carbon).\nReason (R): The storage and
movement of nutrient elements through the various components of the ecosystem is called
nutrient cycling.\n\nIn the light of the above statements, choose the correct answer:
233.Consider the following statements regarding the exceptions, limitations, and summary
concepts of ecological pyramids (Question 233):\n\nI. In most ecosystems, all pyramids of
numbers, biomass, and energy are upright.\nII. The pyramid of biomass in the sea is generally
inverted because the biomass of fishes far exceeds that of phytoplankton.\nIII. The pyramid of
energy is always upright and can never be inverted under any circumstances.\nIV. Saprophytes
are given the most prominent position at the base of ecological pyramids in NCERT.\n\nWhich
of the statements given above are correct according to the NCERT text?
concepts of ecological pyramids (Question 233):\n\nI. In most ecosystems, all pyramids of
numbers, biomass, and energy are upright.\nII. The pyramid of biomass in the sea is generally
inverted because the biomass of fishes far exceeds that of phytoplankton.\nIII. The pyramid of
energy is always upright and can never be inverted under any circumstances.\nIV. Saprophytes
are given the most prominent position at the base of ecological pyramids in NCERT.\n\nWhich
of the statements given above are correct according to the NCERT text?
234.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 234):\n\nAssertion (A): Atmosphere or hydrosphere represents the
reservoir for the gaseous type of nutrient cycle (carbon).\nReason (R): The storage and
movement of nutrient elements through the various components of the ecosystem is called
nutrient cycling.\n\nIn the light of the above statements, choose the correct answer:
as Reason (R) (Question 234):\n\nAssertion (A): Atmosphere or hydrosphere represents the
reservoir for the gaseous type of nutrient cycle (carbon).\nReason (R): The storage and
movement of nutrient elements through the various components of the ecosystem is called
nutrient cycling.\n\nIn the light of the above statements, choose the correct answer:
235.Consider the following statements regarding the exceptions, limitations, and summary
concepts of ecological pyramids (Question 235):\n\nI. In most ecosystems, all pyramids of
numbers, biomass, and energy are upright.\nII. The pyramid of biomass in the sea is generally
inverted because the biomass of fishes far exceeds that of phytoplankton.\nIII. The pyramid of
energy is always upright and can never be inverted under any circumstances.\nIV. Saprophytes
are given the most prominent position at the base of ecological pyramids in NCERT.\n\nWhich
of the statements given above are correct according to the NCERT text?
concepts of ecological pyramids (Question 235):\n\nI. In most ecosystems, all pyramids of
numbers, biomass, and energy are upright.\nII. The pyramid of biomass in the sea is generally
inverted because the biomass of fishes far exceeds that of phytoplankton.\nIII. The pyramid of
energy is always upright and can never be inverted under any circumstances.\nIV. Saprophytes
are given the most prominent position at the base of ecological pyramids in NCERT.\n\nWhich
of the statements given above are correct according to the NCERT text?
236.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 236):\n\nAssertion (A): Atmosphere or hydrosphere represents the
reservoir for the gaseous type of nutrient cycle (carbon).\nReason (R): The storage and
movement of nutrient elements through the various components of the ecosystem is called
nutrient cycling.\n\nIn the light of the above statements, choose the correct answer:
as Reason (R) (Question 236):\n\nAssertion (A): Atmosphere or hydrosphere represents the
reservoir for the gaseous type of nutrient cycle (carbon).\nReason (R): The storage and
movement of nutrient elements through the various components of the ecosystem is called
nutrient cycling.\n\nIn the light of the above statements, choose the correct answer:
237.Consider the following statements regarding the exceptions, limitations, and summary
concepts of ecological pyramids (Question 237):\n\nI. In most ecosystems, all pyramids of
numbers, biomass, and energy are upright.\nII. The pyramid of biomass in the sea is generally
inverted because the biomass of fishes far exceeds that of phytoplankton.\nIII. The pyramid of
energy is always upright and can never be inverted under any circumstances.\nIV. Saprophytes
are given the most prominent position at the base of ecological pyramids in NCERT.\n\nWhich
of the statements given above are correct according to the NCERT text?
concepts of ecological pyramids (Question 237):\n\nI. In most ecosystems, all pyramids of
numbers, biomass, and energy are upright.\nII. The pyramid of biomass in the sea is generally
inverted because the biomass of fishes far exceeds that of phytoplankton.\nIII. The pyramid of
energy is always upright and can never be inverted under any circumstances.\nIV. Saprophytes
are given the most prominent position at the base of ecological pyramids in NCERT.\n\nWhich
of the statements given above are correct according to the NCERT text?
238.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 238):\n\nAssertion (A): Atmosphere or hydrosphere represents the
reservoir for the gaseous type of nutrient cycle (carbon).\nReason (R): The storage and
movement of nutrient elements through the various components of the ecosystem is called
nutrient cycling.\n\nIn the light of the above statements, choose the correct answer:
as Reason (R) (Question 238):\n\nAssertion (A): Atmosphere or hydrosphere represents the
reservoir for the gaseous type of nutrient cycle (carbon).\nReason (R): The storage and
movement of nutrient elements through the various components of the ecosystem is called
nutrient cycling.\n\nIn the light of the above statements, choose the correct answer:
239.Consider the following statements regarding the exceptions, limitations, and summary
concepts of ecological pyramids (Question 239):\n\nI. In most ecosystems, all pyramids of
numbers, biomass, and energy are upright.\nII. The pyramid of biomass in the sea is generally
inverted because the biomass of fishes far exceeds that of phytoplankton.\nIII. The pyramid of
energy is always upright and can never be inverted under any circumstances.\nIV. Saprophytes
are given the most prominent position at the base of ecological pyramids in NCERT.\n\nWhich
of the statements given above are correct according to the NCERT text?
concepts of ecological pyramids (Question 239):\n\nI. In most ecosystems, all pyramids of
numbers, biomass, and energy are upright.\nII. The pyramid of biomass in the sea is generally
inverted because the biomass of fishes far exceeds that of phytoplankton.\nIII. The pyramid of
energy is always upright and can never be inverted under any circumstances.\nIV. Saprophytes
are given the most prominent position at the base of ecological pyramids in NCERT.\n\nWhich
of the statements given above are correct according to the NCERT text?
240.Given below are two statements, one is labelled as Assertion (A) and the other is labelled
as Reason (R) (Question 240):\n\nAssertion (A): Atmosphere or hydrosphere represents the
reservoir for the gaseous type of nutrient cycle (carbon).\nReason (R): The storage and
movement of nutrient elements through the various components of the ecosystem is called
nutrient cycling.\n\nIn the light of the above statements, choose the correct answer:
as Reason (R) (Question 240):\n\nAssertion (A): Atmosphere or hydrosphere represents the
reservoir for the gaseous type of nutrient cycle (carbon).\nReason (R): The storage and
movement of nutrient elements through the various components of the ecosystem is called
nutrient cycling.\n\nIn the light of the above statements, choose the correct answer:
Answer Key
14
21
33
43
51
61
72
81
93
103
114
122
133
143
152
162
174
182
191
204
214
223
231
241
254
264
271
281
292
303
313
322
332
341
354
361
374
384
391
402
412
423
434
443
451
464
473
481
491
503
511
523
533
542
551
563
572
583
593
601
614
624
634
644
654
662
674
683
691
701
713
721
732
741
752
764
774
782
794
802
814
823
832
844
854
864
872
882
894
903
913
922
933
941
954
962
974
981
994
1003
1011
1022
1032
1043
1052
1061
1072
1081
1091
1101
1112
1123
1132
1143
1151
1161
1173
1181
1191
1204
1214
1223
1232
1242
1253
1264
1274
1284
1294
1303
1311
1322
1332
1342
1351
1361
1374
1382
1391
1401
1413
1423
1432
1444
1453
1464
1472
1483
1494
1501
1514
1524
1533
1541
1553
1561
1574
1584
1592
1602
1611
1621
1632
1642
1653
1661
1673
1684
1693
1704
1711
1721
1731
1741
1752
1761
1772
1784
1791
1804
1812
1823
1834
1844
1851
1861
1874
1882
1893
1904
1912
1924
1934
1941
1951
1963
1974
1982
1993
2001
2011
2023
2032
2042
2054
2063
2071
2084
2092
2102
2114
2123
2132
2141
2152
2164
2174
2181
2194
2203
2214
2223
2234
2244
2251
2264
2271
2282
2293
2304
2312
2324
2334
2341
2353
2362
2373
2381
2392
2402