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Biology · 2022 · 3 marks
CBSE 2022 · Region 4 · Set 1 · Q9
Bacillus thuringiensis plays an important role in Integrated Pest Management strategy. Explain how. Name any two crops that are protected efficiently…
Bacillus thuringiensis plays an important role in Integrated Pest Management strategy. Explain how. Name any two crops that are protected efficiently from pests.
Marking-scheme solution
Spores of Bacillus thuringiensis available as sachets are mixed with water and sprayed on vulnerable plants, insect will die if they eat the plant.
Examples: Brassica, fruit trees
//Scientists have introduced Bt toxin gene into plants, Insect will die if they eat the plant.
Examples: Bt rice, Bt cotton, Bt tomato, Bt potato, Bt soyabean
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CBSE Class 12 Biology past-paper question from the 2022 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.