Plants absorb dissolved nitrates from soil and convert them into

A. free nitrogen

B. urea

C. ammonia

D. proteins

Answer: Option A

Solution(By Examveda Team)

The plant cells absorb nitrates from the soil and convert them into ammonia which ultimately reduced to ammonium ions (NH4+). These ammonium ions are then combined with organic compounds to form amino acids such as glutamine i.e., free nitrogen. This process of conversion is known as nitrogen fixation.

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Comments ( 5 )

  1. Maya Naik
    Maya Naik :
    4 months ago

    ans must be = protein
    cause the final product after nitrogen fixation is amino acids [i.e food for them]
    and i am not getting any refers about glutamine side to be free nitrogen please check it

  2. Pooja Bhatta
    Pooja Bhatta :
    12 months ago

    If the question is conversion of nitrates into what, then it is ammonia. Then why it is written free nitrogen!

  3. Pashupathi Mani
    Pashupathi Mani :
    1 year ago

    Option D.
    Nitrogen is transported from the root of a plant to the shoot via the xylem in the form of nitrate, dissolved ammonia and amino acids.
    Most of the nitrate reduction is carried out in the shoots while the roots reduce only a small fraction of the absorbed nitrate to ammonia.
    Ammonia (both absorbed and synthesized) is incorporated into amino acids via the glutamine synthetase-glutamate synthase pathway.

  4. Pakeeza Fawwad
    Pakeeza Fawwad :
    2 years ago

    may be in nitrogen cycle

  5. Sumit Singh
    Sumit Singh :
    5 years ago

    How it occurs

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