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

In aquatic ecosystems, inverted biomass pyramids are observed when the biomass of primary consumers surpasses that of producers. While organisms at higher trophic levels necessitate more energy, this fact does not account for the occurrence of inverted biomass pyramids in aquatic environments.