Question

Explain how Bacillus thuringiensis acts as a bio-control agent.

Answer 1

1. Bacillus thuringiensis (Bt) is an efficient biocontrol agent against caterpillars and butterflies.
2. Bacillus thuringiensis dried spores are mixed with water and sprayed onto sensitive plants such as Brassicas and fruit trees.
3. When insect larvae consume the leaves, the toxin (cry protein) generated in their intestines by bacteria kills them.