Plants have neither a nervous system nor muscles, even then they respond to stimuli. For example, the leaves…
Plants have neither a nervous system nor muscles, even then they respond to stimuli. For example, the leaves of chhui-mui (touch-me-not) plant when touched begin to fold up and droop. (a) How is the information communicated in "touch-me-not" plants ? (b) What enables the plant cells to bring out the observable response ? (c) Differentiate the movement mentioned above from the movement of tendrils in a pea plant.
Solution
(a) Plant cells use electrical– chemical means to convey
information. /The information that touch has occurred must be
communicated
(b) Plant cells change shape by changing the amount of water in
them (swelling or shrinking).
(c)
Movement in touch-me-not Movement of tendrils in pea
Plant plant
It is growth independent It is growth dependent
It does not take place in the It takes place in the direction
direction of stimulus of stimulus
It is also called as nastic It is also called as tropic
movement. movement
(any other)
(Any one difference)