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Response to stimuli in plants

TOUCH-ME-NOT RESPONSE TO STIMULI - Teachoo.jpg

Take a look at this picture. All leaves fold up even though it is touched only at the tip.

How is this possible?

  • Plants, like in animals, have electrical-chemical means to convey the information of this stimulus (touch).
  •  The movement takes place as plant cells change their shape by shrinking or swelling .This change is due to a change in the amount of water in them.

Note: This movement in plants which is not associated with growth and is direction specific is called Nastic movement.

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Maninder Singh's photo - Co-founder, Teachoo

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Maninder Singh

CA Maninder Singh is a Chartered Accountant for the past 12 years and a teacher from the past 16 years. He teaches Science, Economics, Accounting and English at Teachoo