2
Question
In a plant body, where are auxins synthesised? Briefly explain how auxins help in bending of a plant stem towards light.
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Solution
- It is synthesised primarily in shoot apical meristems and young leaves.
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Auxins are powerful growth-stimulants present more in actively growing regions like shoot apex, root apex, lateral meristems, and more.
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When plants detect light, auxin is synthesised at the shoot tip, and it helps the cells to grow longer.
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When light falls on one side of the plant, auxin diffuses to the shady side of the plant.
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This increased concentration of auxin stimulates cells on the side of the shoot, that is away from the sun, to grow longer.
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As a result, the plant seems to bend towards the light.
- It is synthesised primarily in shoot apical meristems and young leaves.
-
Auxins are powerful growth-stimulants present more in actively growing regions like shoot apex, root apex, lateral meristems, and more.
-
When plants detect light, auxin is synthesised at the shoot tip, and it helps the cells to grow longer.
-
When light falls on one side of the plant, auxin diffuses to the shady side of the plant.
-
This increased concentration of auxin stimulates cells on the side of the shoot, that is away from the sun, to grow longer.
-
As a result, the plant seems to bend towards the light.
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