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NEET Biology Organisms and population Question Bank Bio Geochemical Cycle

  • question_answer
    The agent/s which make/s free atmospheric nitrogen available to plants is/are

    A) Lightening

    B) Free living nitrogen fixing bacteria

    C) Symbiotic nitrogen fixing bacteria

    D) All of these

    Correct Answer: D

    Solution :

    \[{{N}_{2}}\]Fixation occurs in two ways namely-Electrochemical fixation and Biological fixation. Lightening is the electrochemical fixation and free living nitrogen fixing bacteria and symbiotic nitrogen fixing bacteria are the biological \[{{N}_{2}}\] fixing organisms.


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