Q. How does a touch-me-not plant respond on touching? What is this movement called?
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The touch me not plant is also called chhui mui. It belongs to the Mimosa family. When we touch them, they begin to fold up and droop. The leaves of this plant move very quickly in response to touch. There is no growth involved in this movement.
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When we physically touch the 'touch-me-not' plants ,then our physical touch works as an external stimulus for the plant.
In the reaction of the external stimulus, a special type of chemical is secreted inside the leaves of the touch-me-not plants.
Due to this chemical secretion,the internal turgor pressure of the touch me not plant's leaves decrease and the leaves shrink it's physical size.
This plant movement is known as the chemotrophic movement.
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