AP BIOLOGY

Detailed explanation-1: -Thigmotropism is the directional growth movement of a plant in response to touch or contact stimuli. It is found in twining plants or tendrils which grow around a surface such as a wall, pot, or trellis. The word Thigmotropism is derived from “Thigmo” means “Touch or Contact” and “Tropism” which means “Directional”.

Detailed explanation-2: -When subjected to constant directional pressure, such as a trellis, plants move to grow around the object providing the pressure; this process is known as thigmotropism. Thigmonastic responses include opening and closing leaves, petals, or other parts of the plant as a reaction to touch.

Detailed explanation-3: -This is a type of rapid plant movement called thigmonasty or seismonasty or haptonasty and comes as a direct reaction to physical contact.