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*(1) Explain coordination in plants with thehelp of suitable examples.

Answer»

Coordination is the ability to use different parts of the plant together, smoothly and efficiently. In plants, coordination is due to the result of a chemical system, wherein plant hormones or phytohormones have a major role.Movement in plants

Plants exhibit two types of movements.

1.Growth-dependent movements called the Tropic Movements. ( towards or away from a stimulus)

2.Non-growth dependent movements called the Nastic Movements. ( independent of stimulus)

Tropic movements

These can be classified again into 5 types. They are:

1.Phototropism (light)

2.Geotropism (gravity)

3.Hydrotropism (water )

4.Chemotropism (chemicals)

5.Thigmotropism (touch)

Plants have neither nervous system nor muscles that bring about Movement in animals it. It doesn't mean that plant do not show movement. Plants also show movements. moments that do not involve growth and moment that are due to growth these are the movement in a plant. hormones in plants are called plant hormones or growth regulator this helped in coordination of the plant. incremental triggers such that light water Gravity Chemicals that help in a coordination of the plant. some hormones like growth hormones such that a u x i n gibberellin cytokinin and also inhibitors that help the plant to more growth like abscisic acid.

Plants exhibit some growth changes as well as some movements. This coordination in plants is attributed to the presence of plant hormones. Unlike animals, plants do not have anymuscular system or nervous system. But, they are still able to show movement and also coordination. These movements are always controlled and not haphazard.

Growth-dependent movements called the Tropic Movements. ( towards or away from a stimulus)

Non-growth dependent movements called the Nastic Movements. ( independent of stimulus)

HOPE IT HELPS YOU



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