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What is the main function of auxin in plants?

Answer and explanation

Correct answer: Promoting cell growth

Auxin is a plant hormone that chiefly promotes cell elongation and supports growth responses. Its unequal distribution in a stem is especially important in phototropism, because cells on the shaded side elongate more and the stem bends toward light. Therefore option A is correct. Leaf fall is commonly associated with ethylene or abscisic effects, seed dormancy with abscisic acid, and flower colour mainly with pigments.

Related tags

Control CoordinationAuxinPlant HormonesPlant HormonesControl And CoordinationScienceClass 10 Mcq

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