Let us Grow

Movement In Plants

In animals, control and coordination is governed by the nervous system. However, plants do not have a nervous system.

Then, how do plants respond to stimuli?

Plants respond to stimuli by showing movement.

Have you ever seen any movement in plants?

• When you touch a sensitive plant such as touch- me- not (Mimosa pudica), the plant folds its leaves and droops.

• When a seed germinates, the root grows down in the soil and the stem grows up in the air.

In the first example, touch is the stimulus and the plant responds by folding its leaves. Therefore, the plant shows movement by folding its leaves.

In the second example, the seed germi…