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Which one of the following is an example...

Which one of the following is an example of carrying out biological control of pests/diseases using microbes?

A

Nucleopolyhedroviral against white rust in Brassica

B

Bt-cotton to increase cotton yield

C

Lady bird beetle against aphids in mustard

D

Trichoderma sp. against certain plant pathogens

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The correct Answer is:
4
Trichoderma are free- living fungi and are effective biocontrol agent of several plant pathgens. Azotobacter is a free living nitrogen fixing bacteria.Many members of genus Glomus form mycorrhiza. Aspergillus is the common green mould beloging to the ascomycetes.
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