Question

a. What do you mean by seismonastic movement?
b. Name the types of movements in plants. Give one example of each movement.

Answer 1

Hint: We know that human beings and animals are mobile. They normally move from one place to another in search of food, shelter, and earnings. However, the plants also can show the movement in their body. They can’t move a long distance like us, but they show some changes in their body.

Complete answer:
The numerous types of rejoinders and activities which are exposed by plants on receiving a stimulus are called Seismonastic movements of the plants. The stimulus which is received by the plant can be in any form, it may be electric, biological, compression, chemical touch, temperature, etc. when the stimulus is not in the favor of the plant, then the plant normally moves away from the source of stimulus on giving some kind of change in its structure.

Seismonastic movements also involve the reactions towards the light. For example, flowers like sunflower face towards the rays of the sun. The flowers such as moonflower, bloom only at night.

When we talk about it, we can say that there are several dissimilar sorts of movements normally shown by the plants.
> Phototropism is an action in the direction of the light. The plant moves on the way to the foundation of sunlight. Example: a plant kept near the window grows towards the window so that it gains more sunlight.

> Geotropism is the undertaking on the road to the soil. Example: this is the measure shown by roots near the ground in the exploration of water and minerals.

> Hydrotropism is the action in the direction of the water. Example: this is the activity exposed by roots near the source of water.

> Chemotropism is the action on the way to the chemicals. Example: The male gametes move in the direction of the egg cell former to fertilization.

Note: Seismonastic movements are the actions in which the plants pass away from the stimulus. For example, the plant Mimosa pudica shows a foldaway of the fliers when affected by touch. Such movements are not only shown towards the touch.
Thus, the Seismonastic movements play a major role in the life of the plants.