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.
Frequently asked questions
What is the correct answer to this question?
Promoting cell growth
Why is this the correct answer?
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.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Control and Coordination. Topic: Plant hormones.
