Chapter:

Microbes-in-Human-Welfare

Match items in column 'A' and column 'B' and choose correct answer. 
 Column A Column B
(i) Lady bird (A) Methanobacterium
(ii) Mycorrhiza(B) Trichodema
(iii) Biological control (C)  Aphids
(iv) Biogas(D) Glomus 
The correct answer is: