What triggers activation of protoxin to active Bt toxin of Bacillus thuringiensis in boll worm?

1. A. Acidic pH of stomach
2. B. Body temperature
3. C. Moist surface of midgut
4. D. Alkaline pH of gut

Attempt this NEET 2019 Biology question free — pick an option to reveal the correct answer and a step-by-step explanation. Then join NEET Mastery Quest to practise 15,000+ PYQ and 2027-syllabus questions.