Question

Among the following,select the free-living $N_{2-}$ fixers: Nostoc, Anabaena, Rhizobium, Frankia, Azotobacter, Rhodospirillum, Beijemickia, Bacillus, Nitrobacter and Thiobacillus

• A. 5
• B. 8
• C. 7
• D. 6

Answer 1

Answer: (D)

Nostoc, Anabaena, Azotobacter, Rhodospirillum, Beijemickia, and Bacillus are free living $N_{2-}$ fixers.