CBSE 2023 · Region 1 · Set 1 · Q20 · 2 marks
Ecological pyramids give important information about the ecological system, but do have some limitations. List any two limitations of ecological pyramids.
Marking-scheme solution
Doesn't take into account same species belonging to two or more trophic levels.
Assumes a simple food chain which never exists in nature/does not accommodate a food web.
Saprophytes are not given any place though they play an important ecological role.
EcosystemEcological PyramidsUnderstandvery_short_answermedium
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CBSE Class 12 Biology past-paper question from the 2023board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.