A) Nostoc
B) Tolypothrix
C) Aulosira
D) Anabaena
Correct Answer: C
Solution :
Anabaena, Nostoc, Aulosira and Tolypothrix are free living nitrogen fixing cyanobacteria. Out of them Aulosira is the most efficient cyanobacterium which fix atmospheric nitrogen efficiently in rice field. Recent discoveies have proved it.You need to login to perform this action.
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