Question

how do auxins promote the growth of tendril around a support

Answer 1

hey there!

here's ur answer :

the movement of tendril around a support is caused by the auxin hormone. less auxin occurs on the side of contact as compared to the free side . auxin promotes the growth on the free side ,the tendril coils around a support .

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hope it helps ya :) 

Answer 2

Explanation:

Auxin is a plant growth hormone. When the tip of the tendril touches a support, then the auxins present on its tip moves to the side of tip which is away from the support, so, due to more auxins in its tendrils away from the support grows faster.