MCQ
Azotobacter and Bacillus polymyxa are the examples of:
  • A
    Symbiotic nitrogen$-$fixers.
  • Non$-$symbiotic nitrogen$-$fixers.
  • C
    Ammonifying bacteria.
  • D
    Disease$-$causing bacteria.

Answer

Correct option: B.
Non$-$symbiotic nitrogen$-$fixers.

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