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What are the names of free living aerobi...

What are the names of free living aerobic and anaerobic nitrogen fixation bacteria respectively?
(A) Rhizobium - Clostridium
(B) Azotobacter - Clostridium
(C) Azotobacter - Agrobacterium
(D) Agrobacterium - Clostridium

A

Rhizobium - Clostridium

B

Azotobacter - Clostridium

C

Azotobacter - Agrobacterium

D

Agrobacterium - Clostridium

Text Solution

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The correct Answer is:
B
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