Question

Given figure represents a pyramid of biomass in an aquatic ecosystem

Identify $A$ and $B$ and select the correct answer.
(i) $A$ is the crop which supports and $B$ is the crop which is supported.
(ii) $A$ is the crop which is supported and $B$ is the crop which supports.
(iii) $A$ is phytoplanktons and $B$ is zooplanktons.
(iv) $A$ is zooplanktons and $B$ is phytoplanktons.

• A. (i) and (iv)
• B. (ii) and (iii)
• C. (i) and (iii)
• D. (ii) and (iv)

Answer 1

Answer: (C)

The given pyramid represents pyramid of biomass in an aquatic ecosystem. In this pyramid, biomass of phytoplanktons, i.e., producers (represented by A) is smaller than that of zooplanktons, i.e., primary consumers (represented by B). Phytoplanktons support zooplanktons as the latter feed upon them.