NEET Biology question

Which of the following best explains the specific mechanism by which Bt toxin kills susceptible insect larvae after ingestion?

(A)It is activated in the insect's alkaline gut and damages the gut lining, leading to the insect's deathCorrect
(B)It directly paralyses the insect's legs on external contact
(C)It prevents the larva from moulting its exoskeleton
(D)It attracts predatory birds to the insect

Answer: (A)

Solution

After ingestion, the Bt protoxin is activated in the alkaline environment of the insect's gut,

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Question ID VK-124410