Question

what is the function of abscisic acid class 10 biology chapter control and coordination ​

Answer 1

Answer:

Hey mate, here is your answer.

Explanation:

Control and coordination

Despite not having sense organs plants can also sense things and respond to them. Plants respond to things like light, gravity, touch, water etc. These are environmental stimuli for a plant. Plants coordinate their behaviour by using their hormones and respond to the environmental changes. This they do by affecting the growth of a plant.

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Therefore, pants use only hormones to coordinate their behaviour. They respond to the stimuli very slowly because they have no nervous system. Plant hormones are called phytohormones.

Dormancy: The inactive condition of a part of a plant in which metabolism almost stops is called dormancy. For example, seed, bud etc.

Plant Hormones

The control and coordination system in plants is done by plant hormones. They affect the growth of a plant in one or the other aspect. The growth of a plant is divided in three stages:

i) Cell division

ii) Cell enlargement

iii) Cell differentiation

So, a plant hormone not only controls these stages of plant growth but also promotion of breaking of dormancy, falling of leaves, fruit growth, ripening of fruits, ageing of plants etc.

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Answer 2

Answer:

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Functions of Abscisic Acid:-

Stimulates the closure of stomata (water stress brings about an increase in ABA synthesis). Inhibits shoot growth but will not have as much affect on roots or may even promote growth of roots. Induces seeds to synthesize storage proteins