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Bt cotton variety that was developed by the introduction of toxin gene of Bacillus thuringiensis (Bt) is resistant to

1. (a) Fungal diseases
2. (b) Plant nematodes
3. (c) Insect predators
4. (d) Insect pests

Correct answer: (d) Insect pests

Solution

Bt cotton contains a gene from Bacillus thuringiensis that produces Bt toxin. This toxin is effective against certain insect larvae, so the plant becomes resistant to insect pests.

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