Symbiotic nitrogen fixation in root nodules of some legumes is caused – McqOptions

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1.	Symbiotic nitrogen fixation in root nodules of some legumes is caused by [AFMC 1998]
A.	Nitrosomonas
B.	Rhizobium
C.	Azotobacter
D.	Nitrobacter
Answer» C. Azotobacter

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