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Growing yam tendrils climb for support. This growth respo...

Growing yam tendrils climb for support. This growth response is

A.

haptotropism

B.

geotropism

C.

phototropism

D.

hydrotropism

E.

chemotropism

Correct answer is A

-  Haptotropism / thigmotropism is the movement or change in orientation of a plant's growth as a reaction to touch. The orienting factor is generally a hard surface that can change the direction of the plant's growth or the growth of one of its organs.

- The movement of parts of a plant (especially tendrils) in response to a touch stimulus.