How do auxins promote the growth of a tendril around a support?

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Solution

Auxin is synthesized at the shoot tip. It helps the cell grow longer. When a tendril comes in contact with a support, auxin stimulates faster growth of the cells on the opposite side, so that the tendril forms a coil around the support. This makes the tendrils appear as a watch spring.

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How do auxins promote the growth of a tendril around a support?

What are tendrils? How do auxins promote the growth of a tendril around a support? Explain in simple words.

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