Q197 / 200 · NEET 2009 (Screening) · Zoology

What is true about $B t$ toxin?

  • Correct answer
    A
    The inactive protoxin gets converted into active form in the insect gut
  • B
    Bt protein exists as active toxin in the Bacillus
  • C
    The activated toxin enters the ovaries of the pest to sterilize it and thus prevent its multiplication
  • D
    The concerned Bacillus has antitoxins

Solution

Bacillus thuringiensis toxin is an inactive protoxin, which gets converted into active form in the insect gut. It works as an insecticide.

Hence, the correct answer is option: 'A'.

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