Which of the following is NOT correct about Bacillus thuringiensis?

It can be sprayed on plants.

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It can kill harmful bacteria.

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It can kill insects.

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It's toxin has been genetically engineered.

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Solution

The correct option is B It can kill harmful bacteria.
Bacillus thuringiensis is a bacterium that produces a toxin, which when ingested by cotton bollworm brings about their death. Hence, it can be used as an environment-friendly pesticide or insecticide. However, it has no action on bacteria or fungi which are harmful to plants. It's spores can be sprayed on crop plants. Bt-Cotton has been genetically engineered for containing the gene coding for the toxin of Bacillus thuringiensis.

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