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Describe the role of microbes in …

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Describe the role of microbes in nitrogen fixation

    • Posted by Dharamveer Kumar 5 years, 1 month ago

    CBSE > Class 12 > Biology
    • 1 answers

    Gaurav Seth 5 years, 1 month ago

    Role of organisms in the nitrogen cycle:

    • Bacteria play a central role:
      • Nitrogen-fixing bacteria, which convert atmospheric nitrogen to nitrates.
      • Bacteria of decay, which convert decaying nitrogen waste to ammonia.
      • Nitrifying bacteria, which convert ammonia to nitrates/nitrites.
      • Denitrifying bacteria, which convert nitrates to nitrogen gas.
    • Fungi, like bacteria, help to convert dead plants and animals and their wastes into ammonia in the soil.
    • Plants absorb nitrates from the soil to make proteins.
    • Animals consume plants and use it to form animal protein.
    • Humans contribute to the cycle by adding nitrogen rich fertilisers to the soil and by using manure

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