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Essentiale: Ecosystem
Iris: Ecosystem
Invictus: Ecosystem
Ecosystem - Mini Q Bank
Ecosystem- Essentiale - (New NCERT)
Ecosystem - Iris - (New NCERT)
Q. No.

Assertion: Grasslands do not accumulate as much biomass as forests.
Reason: Grasses and herbs have inefficient photosynthesis as compared to the tall trees.

1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason are false

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false

Subtopic:  Ecosystem Productivity | Ecological Efficiencies |
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A):  Light is the main variable limiting primary production in the oceans.
Reason (R):  Solar radiation does not drive photosynthesis in oceans.
 In the light of the above statements, choose the most appropriate answer from the options given below :
1.  Both (A) and (R) are True and (R) is the correct explanation of (A).
2.  Both (A) and (R) are True but (R) is not the correct explanation of (A).
3.  (A) is True but (R) is False.
4.  Both (A) and (R) are False.
Subtopic:  Components & Types of Ecosystems | Energy Flow |
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A):  Various adaptations have evolved in plants that can increase their uptake of nutrients.
Reason (R):  Plants are unable to ‘choose’ their environment as they are unable to move about.
In the light of the above statements, choose the most appropriate answer from the options given below :
1.  Both (A) and (R) are true and (R) is the correct explanation of (A).
2.  Both (A) and (R) are true but (R) is not the correct explanation of (A).
3.  (A) is true but (R) is false.
4.  Both (A) and (R) are false.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
Subtopic:  Components & Types of Ecosystems |
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
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Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A):  Most of an ecosystem’s production is eventually consumed by detritivores and decomposers.
Reason (R):  Energy is said to flow through, not cycle within, ecosystems.
 In the light of the above statements, choose the most appropriate answer from the options given below :
1.  Both (A) and (R) are true and (R) is the correct explanation of (A).
2.  Both (A) and (R) are true but (R) is not the correct explanation of (A).
3.  (A) is true but (R) is false.
4.  Both (A) and (R) are false.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
Subtopic:  Energy Flow |
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A):  Most food chains or webs have only about four or five trophic levels.
Reason (R):  Trophic efficiencies are generally only about 10% in different ecosystems.
In the light of the above statements, choose the most appropriate answer from the options given below :
1.  Both (A) and (R) are True and (R) is the correct explanation of (A).
2.  Both (A) and (R) are True but (R) is not the correct explanation of (A).
3.  (A) is True but (R) is False.
4.  Both (A) and (R) are False.
Subtopic:  Energy Flow |
 69%
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A):  Of all the required nutrients other than nitrogen, phosphorus is the most likely to be scarce enough to limit plant growth.
Reason (R):  The reservoir of phosphorus is in the mineral form rather than in the atmosphere.
In the light of the above statements, choose the most appropriate answer from the options given below :
1.  Both (A) and (R) are true and (R) is the correct explanation of (A).
2.  Both (A) and (R) are true but (R) is not the correct explanation of (A).
3.  (A) is true but (R) is false.
4.  Both (A) and (R) are false.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
Subtopic:  Mineral Cycling & Ecosystem Services (OLD NCERT) |
 51%
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
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Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A):  Net primary productivity is higher in warm climates than in cold ones.
Reason (R):  The limit on a community’s productivity is determined ultimately by the amount of sunlight it receives.
 In the light of the above statements, choose the most appropriate answer from the options given below :
1.  Both (A) and (R) are true and (R) is the correct explanation of (A).
2.  Both (A) and (R) are true but (R) is not the correct explanation of (A).
3.  (A) is true but (R) is false.
4.  Both (A) and (R) are false.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
Subtopic:  Ecosystem Productivity | Energy Flow |
 64%
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): Some aquatic ecosystems have inverted biomass pyramids.
Reason (R): The pyramid of energy is also inverted in such ecosystems.
In the light of the above statements, choose the most appropriate answer from the options given below :
1. Both (A) and (R) are True and (R) is the correct explanation of (A).
2. Both (A) and (R) are True but (R) is not the correct explanation of (A).
3. (A) is True but (R) is False.
4. Both (A) and (R) are False.
Subtopic:  Ecological Pyramids |
 83%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

Assertion: Ecosystems with intermediate levels of productivity tend to have the most species.
Reason: The relationship between productivity and species richness is not linear.

1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason are false

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
Subtopic:  Ecosystem Productivity |
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
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Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): Saprophytes play a vital role in the ecosystem.
Reason (R): Saprophytes are accorded the highest trophic level in a food chain or a food web.
In the light of the above statements, choose the most appropriate answer from the options given below :
1. Both (A) and (R) are True and (R) is the correct explanation of (A).
2. Both (A) and (R) are True but (R) is not the correct explanation of (A).
3. (A) is True but (R) is False.
4. Both (A) and (R) are False.
Subtopic:  Energy Flow |
 74%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Select Question Set:
filter
Essentiale: Ecosystem
Iris: Ecosystem
Invictus: Ecosystem
Ecosystem - Mini Q Bank
Ecosystem- Essentiale - (New NCERT)
Ecosystem - Iris - (New NCERT)
Q. No.

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