Question

Why mimosa pudica leaves droop down when touched?

Answer 1

Mimosa pudica leaves droop down because of the sensation of touch . it is known as sensitive plant . it is response to stimulus .When the leaves of the Mimosa are touched, there is a change in the concentration gradient of potassium and chloride ions within two types of cells, the flexor and extensor cells, within the pulvinus of the plant. When the leaf is touched, it quickly folds its leaflets and pinnae and droops downward at the petiole attachment…The leaves also droop at night, and when exposed to rain or excessive heat. This response may be defenses against herbivorous insects, leaching loss of nutrients, or desiccation. The folds of different leaves are interconnected and compatible with each other, and the whole structure can be folded and unfolded from a single or multiple driving points.
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