Question

State how concentration of auxin stimulates the cells to grow longer on the
side of the shoot which is away from light and the growth of tendril?

Answer 1

When growing plants detect light, a hormone called auxin, synthesised at the shoot tip, helps the cells to grow longer. When light is coming from one direction of the plant, auxin diffuses towards the shady side. This concentration of auxin stimulates the cells to grow longer on the side of the shoot which is away from light. Thus, the plant appears to bend towards light.