Question
Bt stands for(a) Bacterial toxin(b) Botulinum toxin(c) Bacillus thuringiensis(d) Bacillus toxin
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The abbreviation 'B' in Bt-toxin stands for (a) Biotechnology (b) Biotoxin (c) Bacillus (d) Toxin released by bacterium
What is true about Bt-toxin? (a) The concerned bacillus has antitoxins. (b) The inactive protoxin gets converted into active form in the insect gut (c) Bt-protein exists as active toxin in the bacillus. (d) The activated toxin enters the ovary of pest to sterilize it and thus prevent its multiplication.
Bt-crops are not affected by Bt-toxin because (a) Toxin exist as inactive protoxin. (b) It has special antibodies against toxin. (c) Its intracellular medium is alkaline so toxin remains inactive. (d) All the above
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