CBSE 2026 · Region 2 · Set 2 · Q2 · 1 mark
Observe the contents $\displaystyle 1$, $\displaystyle 2$, $\displaystyle 3$ and $\displaystyle 4$ of soil samples I, II and III shown in the graph. If the temperature and moisture of all soil samples are identical, which soil sample(s) will show faster decomposition?
Official answer
From CBSE’s own marking scheme for this paper.
(C)
Soil Sample III
EcosystemDecompositionAnalysemcqmedium
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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.