Question

Question 8
How does chemical coordination occur in plants?

Answer 1

1. Chemical coordination occurs in plants with the help of fluids secreted in plants known as phytohormones or plant hormones.
2. These hormones regulate the growth of plants.
3. For example, auxin is responsible for the growth of plants and cytokinin helps in cell division in the fast-growing parts of the plant.
4. Auxin, cytokinin, gibberellin, abscisic acid and ethylene are the basic plant hormones.
5. These hormones regulate the growth and development of the plants.
6. They also regulates various metabolic activities in the plants.
7. These hormones respond to the external stimuli like light, temperature, etc.