Which of the following is used as a biological pesticide?

Bacillus thuringiensis

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E. coli

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Staphylococcus

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Both A and C

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Solution

The correct option is A Bacillus thuringiensis
Bacillus thuringiensis (or Bt) is a soil bacteria commonly used as a biological pesticide because it produces toxins called as cry protein or toxin. On the ingestion of sap, toxin enters into the gut of the pests and blocks the gut by attaching with the epithelium of the wall. This blockage makes pests starved and thus they die. Therefore, the correct answer is option A.

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