Question

how does auxin promotes phototropism

Answer 1

Auxin is the hormone which is usually synthesised in the young tip of roots and shoots. When light is coming from one side of the plant, it diffuses towards the shady side of the shoot which stimulates the cells to grow longer, resulting in the bending of shoot towards the light, thus auxin promotes phototropism.

Answer 2

WHEN THE RAYS FALL ON THE PLANT,AUXIN SHIFTS TO THE SHADY PART AND BRINGS GROWTH THERE,AS A RESULT PLANT BENDS TOWARDS THE LIGHT.


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