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    Biology
    Grade-7
    Easy

    Question

    Nitrogen is converted before it can be utilized by plants. This process is known as

    1. Nitrification
    2. Denitrification
    3. Nitrogen fixation
    4. Immobilization

    Hint:

    Rhizobium is responsible for this process.

    The correct answer is: Nitrogen fixation

      • Nitrogen is important for the normal growth and metabolism of plants
      • Nitrogen deficiency can be observed as chlorosis in plants
      • Atmospheric nitrogen cannot be utilized by plants as such
      • Nitrogen is converted into its derivatives by a process called nitrogen fixation
      • In leguminous plants, nitrogen fixation occurs through a bacteria called rhizobium  which is present in the form of nodules in the roots of the plants

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