Azotobacter and Clostridium are nitrogen fixing bacteria and found in

  • A

    Nodulated roots

  • B

    Leaves of certain plant

  • C

    Free in soil

  • D

    None of the above

Similar Questions

Term ‘biosphere’ is used for the zone of earth where life exists

A treeless biome is

Inverted pyramid is found in

Explain carbon cycle.

In Primary succession on rocks there are usually.....