Microbes in Human Welfare

Cultivation of Bt cotton has been much in the news. The prefix "Bt" means
Integrated Pest Management (IPM) discourages the excessive use of
Cow dung is appropriately used as
Find out the pairs, which are correctly matched.
A. Cyanobacteria                      (i.) Biopesticides
B. Mycorrhiza                          (ii.) Solubilization of phosphate
C. Bacillus thuringiensis          (iii.) Cry protein
D. Single cell protein               (iv.) Rhizobia