NEET Biology Organisms and population Question Bank Bio Geochemical Cycle

  • question_answer
    The conversion of nitrate to nitrous oxide and nitrogen gas is termed as [KCET 2000]

    A) Nitrification

    B) Denitrification

    C) Nitrogen-fixation

    D) None of these

    Correct Answer: B

    Solution :

    In water-logged soils and other anaerobic areas, some bacteria utilize the oxygen of nitrates for meeting their requirements. This reduces nitrate into gaseous forms of nitrogen which escape into atmosphere. This phenomenon is called denitrification.


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