CBSE 2026 · Region 3 · Set 3 · Q9 · 1 mark
Match the items given in Column I with Column II and select the correct option. Column I Column II a. Earthworm i. Aquatic Ecosystem b. Zooplankton ii. Detritivore c. Phytoplankton iii. Pyramid of Biomass in Sea d. Inverted pyramid iv. Primary Producer
| Column I | Column II |
| a. Earthworm | i. Aquatic Ecosystem |
| b. Zooplankton | ii. Detritivore |
| c. Phytoplankton | iii. Pyramid of Biomass in Sea |
| d. Inverted pyramid | iv. Primary Producer |
Official answer
From CBSE’s own marking scheme for this paper.
(D)
a-ii, b-i, c-iv, d-iii
EcosystemEcosystem – Structure and FunctionRemembermcqeasy
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CBSE Class 12 Biology past-paper question from the 2026board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.