CBSE 2025 · Region 5 · Set 1 · Q13 · 1 mark
Assertion (A) : To generate only a part of the plant from a cell is totipotency.
Reason (R) : Suitable special nutrient media and sterile conditions are required in 'in vitro' conditions for the division of cells in explants.
Official answer
From CBSE’s own marking scheme for this paper.
(D)
Assertion (A) is false, but Reason (R) is true.
Biotechnology : Principles and ProcessesPrinciples of BiotechnologyUnderstandassertion_reasonmedium
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CBSE Class 12 Biology past-paper question from the 2025board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.