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Once activated the Bt toxin kills by acting on the insect:
AMidgut cells
BWing muscles
CNerve cords
DEgg cases
Answer & Solution
Correct answer: A. Midgut cells
1. The active toxin binds the midgut epithelial surface.
2. It creates pores in those cells.
3. The cells swell and burst and the insect dies.
_Source: NCERT Class 12 Biology, Ch 10 'Biotechnology and its Applications'_
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