Thigmotropism

Thigmotropism is the directional response of a plant organ to touch or physical contact with a solid object. Climbing plants, such as vines, contain tendrils that coil around supporting objects. These organs generally grow straight until they touch something. The contact stimulates a coiling response.

External links

http://biology.kenyon.edu/edwards/project/steffan/b45sv.htm

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