Flowering of Chrysanthemum is inhibited by

IAA

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{G A}_{3}

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Cytokinin

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Ethylene

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Solution

The correct option is C IAA
Chrysanthemum is a flowering plants. It requires long day or cold condition to flower. IAA (indoleacetic acid) is a type of auxin, a plant hormone. It is used to inhibit flowering in many plants including Chrysanthemum.
Thus, the correct answer is 'IAA'.

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