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    Question

    Which of the following is not a function of potassium in

    plant metabolism?
    A Regulation of stomatal opening Correct Answer Incorrect Answer
    B Protein synthesis Correct Answer Incorrect Answer
    C Enhancing disease resistance Correct Answer Incorrect Answer
    D Activation of enzymes Correct Answer Incorrect Answer
    E Constituent of chlorophyll Correct Answer Incorrect Answer

    Solution

    Unlike magnesium, potassium is not a part of the chlorophyll molecule. Instead, it regulates enzyme activity, water use efficiency, protein synthesis, and enhances plant disease resistance.

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