CBSE 2025 · Region 6 · Set 1 · Q15 · 1 mark
Consider the following food chain : Grass → Grasshopper → Frog → Snake → Eagle If the amount of energy available at third trophic level is $\displaystyle 50$ kJ , the available energy at the producer level was:
Official answer
From CBSE’s own marking scheme for this paper.
(D)
$\displaystyle 5000$ kJ
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CBSE Class 10 Science past-paper question from the 2025board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.