Why Do Touch-Me-Not (Mimosa Pudica) Leaves Close When Touched?

Mimosa pudica, a plant from the Fabaceae family, is known for its rapid leaf movements in response to touch, a behavior called thigmonasty. This movement is part of a broader category of nastic movements, which include responses to various stimuli like light and heat. The plant's movement is facilitated by changes in cell pressure within the pulvinus. Despite the energy cost, these movements help deter predators and dislodge insects. The study of such plant behaviors offers insights into evolutionary adaptations.

What are nastic movements and how do they differ based on the type of stimulus?

Discuss the potential evolutionary advantages of the rapid movements exhibited by Mimosa pudica.