Official Answer Key & Detailed Solution
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Correct Answer: Option (A) — Both A and R are true and R is the correct explanation of A
Concept & Option Breakdown
Standard Reference Verified- Assertion (A) is true: Bt cotton is a genetically modified pest-resistant plant engineered to withstand bollworm attacks by producing endotoxins.
- Reason (R) is true: The gene (cry gene) coding for the insecticidal crystal protein is isolated from the soil bacterium Bacillus thuringiensis (Bt).
- Reason correctly explains Assertion: The incorporation of this bacterial gene equips the transgenic cotton plant to produce its own natural biopesticide, conferring insect resistance.
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