The trigger for activation of toxin Bacillus thuringiensis …

Biology Biotechnology and Its Application NCERT Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 13, 2026

The trigger for activation of toxin Bacillus thuringiensis is

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:

The Bt protoxin becomes active in the alkaline gut of insects, where it is converted into the active toxin that kills the insect.

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