Question

    Which one of the following essential nutrient elements

    is absorbed both as an anion and a cation by some plants?
    A Nitrogen Correct Answer Incorrect Answer
    B Potassium Correct Answer Incorrect Answer
    C Calcium Correct Answer Incorrect Answer
    D Sulphur Correct Answer Incorrect Answer

    Solution

    nitrogen is absorbed as ammonium ion as well as nitrate ion.

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