Question

Which of the fillowing are free living nitrogen fixers?

Answer 1

Free-living nitrogen-fixing soil and aquatic bacteria include Azotobacter species, Bacillus species, Clostridium species, and cyanobacteria (e.g. Nostoc). Symbiotic nitrogen-fixing bacteria include Rhizobium and Bradyrhizobium species, which form the characteristic root nodules of leguminous plants

Answer 2

${\huge{\boxed{\mathbf{\red{♡ANSWER♡}}}}}$.

• $\huge\mathscr{Rhodospirillum}$ are the free living nitrogen fixers.