State how the concentration of auxin stimulates the cells to grow longer on the side of the shoot that is away from light.

(N/A) When growing plants detect light,a hormone called auxin,which is synthesized at the shoot tip,helps the cells to grow longer.
When light falls on one side of the plant,auxin diffuses towards the shady side of the shoot.
This higher concentration of auxin on the shady side stimulates the cells to elongate more rapidly compared to the side facing the light,causing the shoot to bend towards the light source.