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Biology Test 20...

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  • Question 1
    4 / -1

    Concentration of mineral ion in plant tissue that reduces the dry weight of tissue by about 10 percent, is known as :-

  • Question 2
    4 / -1

    Criteria for essentiality says requirement of element by the plant is :-

    (a) Specific        

    (b) Non-replaceable

    (c) Absolutely necessary

    (d) Indirect for metabolism

  • Question 3
    4 / -1

    Which one of the following has both Fe and sulphur :-

  • Question 4
    4 / -1

    In a given option which is/are mobile element ?

  • Question 5
    4 / -1

    Best defined function of boron in green plants is :-

  • Question 6
    4 / -1

    Which pair is wrong –

  • Question 7
    4 / -1

    Most of the plants can assimilate nitrate as well as ammonium ions but plants cannot accumulate ammonium ions because :-

  • Question 8
    4 / -1

    Which of the following is the key compound of nitrogen metabolism ?

  • Question 9
    4 / -1

    An element playing important role in nitrogen fixation is :

  • Question 10
    4 / -1

    What is the first stable product of nitrogen fixation?

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