A) Bacillus thuringiensis, Tobacco mosaic virus, Aphids
B) Trichoderma, Baculovirus, Bacillus thuringiensis
C) Oscillatoria, Rhizobium, Trichoderma
D) Nostoc, Azospirillium, Nucleopolyhedrovirus
Correct Answer: B
Solution :
Fungs Trichoderma, Baculoviruses (NPV) and Bacillus thurmgiensis are used as biocontrol agents. Rhizobium, Nostoc, Azospririllum and Oscillatoria are used as biofertilisers, whereas TMV is a pathogen and aphids are pests that harm crop plants.
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