Name: Adrenal Glands
Uploaded: 2019-07-19
Duration: 5 min 19 s
Description: The adrenal glands are found atop our kidneys and help regulate our adrenaline and noradrenaline in times of great stress. Let’s learn more in this video!

Question

How does chemical coordination occur in plants?

Accepted Answer

In plants, coordination takes place through the hormones as they do not have a nervous system. Major plants hormones are as follows-

(i) Auxin- Auxin is a plant hormone which is synthesized at the shoot tip. It helps the cells grow longer. It is responsible for the bending of the stem towards the light.

(ii) Gibberellin- Like auxin, gibberellin also promotes the growth of the stem. It also plays a key role in seed germination.

(iii) Cytokinin- Cytokinin is responsible for cell division and hence the growth in plants. Cytokinins are present in large concentrations in rapidly growing regions of a plant such as fruits and seeds.

(iv) Abscisic acid- Plant hormones generally promote the growth of the plant. However, the growth needs to be in check. Abscisic acid is the hormone that inhibits growth in plants. One of the effects of abscisic acid (also called ABA) is the wilting of leaves.

How does chemical coordination occur in plants?

Important Questions on Control and Coordination

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