Home Biology Biotechnology Principles and Processes Previous Year Questions In Bt cotton, the Bt toxin present in plant …
Biology Biotechnology Principles and Processes Previous Year Questions Single Correct MCQ
Published on: August 14, 2026

In Bt cotton, the Bt toxin present in plant tissue as pro-toxin is converted into active toxin due to:-

A
Acidic pH of the insect gut
B
Action of gut micro-organisms
C
Presence of conversion factors in insect gut
D
Alkaline pH of the insect gut

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The correct answer is:
D

In Bt cotton, the Bt toxin is initially produced as an inactive proto-toxin. It becomes active in the alkaline environment of the insect gut, where it gets converted into the toxic form and kills the insect.

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