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Enhancement of Food Production — BIOLOGY STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceBIOLOGYEnhancement of Food Production3 Marks
Question
Explain how Bacillus thuringiensis acts as a bio-control agent.
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Answer

  1. Bacillus thuringiensis (Bt) is an effective biocontrol agent against butterfly, caterpillars.
  2. Dried spores of Bacillus thuringiensis are mixed with water and sprayed onto vulnerable plants such as Brassicas and fruit trees.
  3. When insect larvae eat the leaves, they get killed by the toxin (cry protein) released in their gut by bacteria.

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