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Science · 2023 · 3 marks
CBSE 2023 · Region 6 · Set 2 · Q33
If a harmful chemical enters in a food chain comprising peacock, plants, rats and snakes, which of these organisms is likely to have the highest…
If a harmful chemical enters in a food chain comprising peacock, plants, rats and snakes, which of these organisms is likely to have the highest concentration of the chemical in its body. Justify your answer. Name the process involved and define it.
Marking-scheme solution
Peacock
Because peacock is occupying the top level of this food chain and the concentration of these non-biodegradable chemicals increase as we move up in a food chain.
Process involved - Biomagnification
The increase in the concentration of harmful chemicals or (nonbiodegradable substances) which accumulate progressively in the successive trophic levels of a food chain.All Our Environment questions2023 question paperNCERT solutions: Our EnvironmentPractice Our Environment →
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CBSE Class 10 Science past-paper question from the 2023 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.