CBSE 2022 · Region 4 · Set 1 · Q9 · 3 marks
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
Microbes in Human WelfareMicrobes as Biocontrol AgentsUnderstandshort_answermedium
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CBSE Class 12 Biology past-paper question from the 2022board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.