A) Nitrococcus, Nitrobacter, Nitrosomonas
B) Rhizobium, Aulosira, Bacillus, Polymyxa
C) Clostridiitm, Rhizobium, Nostoc
D) Anabaena, Nastoc, Azotobacter, Clostridium
Correct Answer: B
Solution :
Polymxya is a member of protista also called giant Amoeba which has no role in nitrogen fixation.You need to login to perform this action.
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