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Biology · 2026 · 1 mark
CBSE 2026 · Region 1 · Set 1 · Q16
Assertion (A): In terrestrial ecosystem much larger fraction of energy flows through grazing food chain. Reason (R): Grazing food chain may be…
Assertion (A) : In terrestrial ecosystem much larger fraction of energy flows through grazing food chain.
Reason (R) : Grazing food chain may be connected to Detritus food chain at some levels.
Official answer
(D)
Assertion (A) is false, but Reason (R) is true.
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CBSE Class 12 Biology past-paper question from the 2026 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.