CBSE 2026 · Region 5 · Set 1 · Q16 · 1 mark
Assertion (A): The use of chitinase enzyme is necessary for the separation of DNA from yeast cells but not in the case of Spirogyra.
Reason (R) : Fungal cell wall is made up of fungal chitin.
Official answer
From CBSE’s own marking scheme for this paper.
(A)
Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
Biotechnology : Principles and ProcessesProcesses of Recombinant DNA TechnologyAnalyseassertion_reasonmedium
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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.