Which one is the free-living, anaerobic nitrogen-fixer? |
|||||||
a) |
b) |
c) |
d) |
Which one is the free-living, anaerobic nitrogen-fixer? |
|||||||
a) |
b) |
c) |
d) |
(b)
is a free-living, anaerobic, nitrogen fixer. Both and are free-living, nitrogen-fixing, aerobic microbes. is a symbiotic, nitrogen-fixer.