Identify the incorrectly matched pair:
1. Carnivores -- secondary or tertiary consumer
2. Decomposers -- microbial heterotrophs
3. Herbivores -- primary consumer
4. Omnivores -- molds, yeasts and mushrooms

Subtopic:  Energy Flow |
 85%
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Consider the two statements:

I: Food chains rarely extend for more than 4 or 5 levels.
II: Consumers at each level convert, on an average, only about 10% of the chemical energy in their food to their own organic tissue.

  
1. Both I and II are correct and II explains I.
2. Both I and II are correct but II does not explain I.
3. Only I is correct.
4. Both I and II are incorrect.

Subtopic:  Energy Flow |
 63%
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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): There is no limitation on the number of trophic levels in a detritus food chain.
Reason (R): The transfer of energy between successive trophic levels in a detritus food chain does not follow the 10% rule.

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 |
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Consider the given two statements:
Assertion (A): Measurement of biomass in terms of fresh weight is more accurate.
Reason (R): The standing crop is measured as the mass of living organisms
(biomass) or the number in a unit area.
 
1. Both (A) and (R) are True and (R) correctly explains (A).
2. (A) is True but (R) is False
3. (A) is False but (R) is True         
4. Both (A) and (R) are True but (R) does not correctly explain (A).
Subtopic:  Energy Flow |
 78%
From NCERT
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Consider the given two statements:
Statement I: Detritus Food Chain begins with dead organic matter.
Statement II: In an aquatic ecosystem, DFC is the major conduit for energy flow.
 
1. Statement I is correct; Statement II is correct
2. Statement I is correct; Statement II is incorrect
3. Statement I is incorrect; Statement II is incorrect
4. Statement I is incorrect; Statement II is correct
Subtopic:  Energy Flow |
 71%
From NCERT
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