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    Question

    Which physiological condition in plants is indicated by

    curling and drying of leaf margins, often due to potassium deficiency?
    A Leaf scorch Correct Answer Incorrect Answer
    B Tip burn Correct Answer Incorrect Answer
    C Leaf roll Correct Answer Incorrect Answer
    D Marginal necrosis Correct Answer Incorrect Answer
    E Interveinal chlorosis Correct Answer Incorrect Answer

    Solution

    Potassium deficiency typically causes yellowing and browning along leaf margins (marginal necrosis). Potassium is essential for enzyme activation and water regulation.

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