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Question -

Crystals of Bt toxin produced by some bacteria do not kill the bacteria themselves because тИТ




Answer -

(a) bacteria are resistant to the toxin        (b) toxin is immature
(c) toxin is inactive                                    (d) bacteria encloses toxin in a special sac.

Answer
toxin is inactive:
In bacteria, the toxin is present in an inactive form, called prototoxin, which gets converted into active form when it enters the body of an insect.

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