9th Class Science Natural resources Question Bank 9th CBSE Science Natural resources

  • question_answer
      Name two organisms, which play vital role in   nitrogen fixation.

    Answer:

       The organisms, which play vital role in nitrogen fixation are (i) Rhizobium and blue-green algae, help in fixation of free atmospheric nitrogen. (ii) Nitrosomonas and Nitrobacter are nitrifying bacteria, which convert ammonia to nitrite and then nitrite to nitrates.


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