Match List-I with List-II:
List-I List-II
A.  Tertiary consumer  I. Grass
B. Secondary consumer  II. Lion 
C. Primary consumer  III. Wolf
D. Primary producer IV. Goat

Choose the correct answer from the options given below: 
1. A-I, B-II, C-III, D-IV
2. A-III, B-IV, C-II, D-I
3. A-III, B-II, C-IV, D-I
4. A-II, B-III, C-IV, D-I
Subtopic:  Ecological Flow |
 90%
From NCERT
NEET - 2024
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NEET 2025 - Target Batch
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NEET 2025 - Target Batch

When a man eats fish which feeds on zooplankton which has eaten small plants, the producer in the chain is:
1. Small plants
2. Fish
3. Man
4. Zooplankton
Subtopic:  Ecological Flow |
 82%
From NCERT
NEET - 2013
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NEET 2025 - Target Batch
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NEET 2025 - Target Batch

Sun is the only source of energy for all ecosystems on earth except for:
1. Mangroves
2. Deserts
3. Deep sea hydrothermal vents
4. Tundra
Subtopic:  Ecological Flow |
 97%
From NCERT
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Consider the two statements:
Assertion (A): The pyramid of biomass may be "inverted" in a pond ecosystem
Reason (R): In a pond ecosystem, the standing crop of phytoplankton, the major producers, at any given point will be lower than the mass of the heterotrophs, such as fish and insects.
 
1. Both (A) and (R) are True and the (R) correctly explains (A).
2. Both (A) and (R) are True but the (R) does not correctly explain (A).
3. (A) is True but (R) is False.
4. Both (A) and (R) are False.
Subtopic:  Ecological Flow |
 88%
From NCERT
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Consider the two statements:
Assertion (A): Pyramid of energy can be inverted in aquatic ecosystems.
Reason (R): Aquatic life defies second law of thermodynamics.
 
1. Both (A) and (R) are True and the (R) correctly explains (A).
2. Both (A) and (R) are True but the (R) does not correctly explain (A).
3. (A) is True but (R) is False.
4. Both (A) and (R) are False.
Subtopic:  Ecological Flow | Ecological Pyramids |
 84%
From NCERT
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