how does the auxin promote phototropism
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auxin promote phototropism by bending stem towards sun light
The mechanism is explain in the diagram
The mechanism is explain in the diagram
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Auxin gets degraded in the sunlight and therefore it is prominently found only in the regions that does not receive any much sunlight.
Explanation:
- The region in the tip is almost depleted of auxin and thereby the auxin diffuses to the shaded regions elongating and growing the cells of that region.
- This causes the plant to bend towards the tip that is towards the sunlight.
- Auxin is a hormone that is responsible for cell elongation and cell division.
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