What is true about Bt toxin? (a) Bt protein exists as active toxin in the Bacillus (b) The activated toxin enters the ovaries of the pest to sterlise it and thus prevent its multiplication. (c) The concerned Bacillus has antitoxins. (d) The inactive protoxin gets converted into active form in the insect gut.
Option D.The activated toxins act on the gut of the insect and do not act in the ovaries, and does not lead to its sterilization as well. The Bacillus does not possess antitoxins. During sporulation, many Bt strains produce crystal proteins that exhibit insecticide resistance.
