Mineral Nutrition

  • Question 1
    CBSEENBI11000287

    Which pigment is present in the root nodules of legumes ?

    Solution
    Leghaemoglobin.
    Question 2
    CBSEENBI11000288

    Name the best known symbiotic nitrogen fixing bacterium.

    Solution
    Rhizobium.
    Question 3
    CBSEENBI11000289

    What type of condition is created by leghaemoglobin in the root modules of legumes ?

    Solution
    Anaerobic.
    Question 4
    CBSEENBI11000290

    How is nitrogenase enzyme protected ?

    Solution
    The nitrogenase enzyme is very sensitive to the molecular oxygen. It requires anaerobic conditions to work. The leg-haemoglobin in the nodule acts as an oxygen scavenger just meainting the anaerobic condition needed by the enzyme.

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