Where are auxins synthesized ? How do they promote phototropism ?
Where are auxins synthesized ? How do they promote phototropism ?
Solution
Synthesized at shoot tip/root tip
When light falls on one side of the plant, auxin diffuses towards the shady side of shoot. The concentration of auxin stimulates the cells to grow longer on the side of shoot which is away from light. Thus plant appears bent towards light/phototropism.