In Bt cotton, the Bt toxin present in the plant tissue as p…

Biology Biotechnology and Its Application NCERT Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 21, 2026

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

acidic pH of stomach

high temperature

alkaline PH of gut

mechanical action in the insect gut

Text Solution

Verified by Experts

The correct answer is:

• Insects that feed on Bt cotton (like lepidopteran larvae) have an alkaline gut.

• The Bt protoxin is activated under high pH, converting it into the active toxin that kills the insect.

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