Which of the following is a non-symbiotic nitrogen-fixing prokaryote?

  • A
    Frankia
  • B
    Azotobacter
  • C
    Acetobacter
  • D
    Rhizobium

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Similar Questions

The most famous nitrogen-fixing bacterium/biofertilizer is:

Which of the following are free-living nitrogen-fixing bacteria?

Analogy type questions:
$(1)$ Reduction of nitrogen to ammonia : Biological nitrogen fixation : Nitrogenase : ........
$(2)$ Free-living bacteria : Rhodospirillum : Free-living blue-green algae : ........

The free-living anaerobic nitrogen-fixing bacterium is . . . . . . .

Find out a set of common $N_2$ fixing fodder plants.

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