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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.

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A
(i) and (iv)
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B
(ii) and (iii)
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C
(i) and (iii)
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D
(ii) and (iv)
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Solution

The correct option is C (i) and (iii)
The given pyramid represent pyramid of biomass in an aquatic ecosystem. In this pyramid, the biomass of phytoplankton, 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.
So the correct answer is option C.

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