A) Bacillus thuringiensis
B) Trichoderma harzianum
C) Nuclear Polyhedrosis Virus (NPV)
D) Xanthomonas campestris
Correct Answer: D
Solution :
The bacterium Xanthomonas campestris is the causative agent of plant disease, black rot of cabbage. Bacillus thuringiensis, T. harzianum and NPV are bio pesticides.
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