Question

Assertion (A): Some aquatic ecosystems have inverted biomass pyramids.
Reason (R): More energy is required by organisms occupying higher trophic levels.

• A. Both (A) and (R) are true and (R) is the correct explanation of (A).
• B. Both (A) and (R) are true and (R) is not the correct explanation of (A).
• C. (A) is true, but (R) is false.
• D. (A) is false, but (R) is true.

Hint:

In aquatic ecosystems, phytoplankton reproduce rapidly, sustaining higher consumer biomass despite low producer biomass.

Answer 1

The Correct Option is B

Inverted biomass pyramids occur in aquatic ecosystems where the biomass of primary consumers exceeds that of producers. More energy is indeed required by organisms occupying higher trophic levels, but this does not explain why inverted biomass pyramids occur in aquatic ecosystems.