Question

explain the role of auxin in phototropic movement.

Answer 1

When a plant senses a directional light stimulus it redistributesits auxinmolecules to the side that is further away from the light. As a consequence, the plant cells that are further away from the light experience a greater auxin concentration and grow faster, causing the shoot to bend towards the light.

Answer 2

auxin help the plant to grow at shoot tip it has acidic medium