Question
Question: \_\_\_\_\_Is a free – living \(N_{2}\)- fixing aerobic bacterium....
_____Is a free – living N2- fixing aerobic bacterium.
A
Azotobacter
B
Rhodospirillum
C
Clostridium
D
Rhizobium
Answer
Azotobacter
_____Is a free – living N2- fixing aerobic bacterium.
Azotobacter
Rhodospirillum
Clostridium
Rhizobium
Azotobacter