CBSE 2023 · Region 1 · Set 2 · Q13 · 1 mark
Assertion (A) : Crystal protein Bt toxin does not kill the Bacillus but kills the insects.
Reason (R) : Bt toxin exists in inactive form in Bacillus but when ingested by the insect, the acidic pH of its gut changes it into an active form.
Official answer
From CBSE’s own marking scheme for this paper.
(C)
Assertion (A) is true, but Reason (R) is false.
Biotechnology and its ApplicationsBiotechnological Applications in AgricultureRememberassertion_reasonmedium
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CBSE Class 12 Biology past-paper question from the 2023board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.