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    5. What is the main precursor of the plant hormone ethylene?

    Question

    What is the main precursor of the plant hormone

    ethylene?
    A Tryptophan Correct Answer Incorrect Answer
    B Acetate Correct Answer Incorrect Answer
    C Methionine Correct Answer Incorrect Answer
    D Adenine Correct Answer Incorrect Answer

    Solution

    Methionine is the precursor of ethylene, which is synthesized in ripening fruits and senescing tissues. Ethylene regulates processes like fruit ripening and leaf abscission.

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