Question

What is phototropism? Describe an activity to demonstrate phototropism.

Answer 1

the response of any plant body to light is called phototropism. it is like stimuli in human beings.
activity.
grow a plant. keep it in a dark room with a little light passing through. water the plant in regular manner. observe the directional change of the plant after 4-5 days. it will bend towards the light.

Answer 2

The process by which the growth of an organism takes place in response to the light stimulus. The process is much witnessed in the plants. Also, this occurs in other organisms like fungi. The chemical called Auxin is present in the cells which are farthest from the light. This Auxin reacts when phototropism occurs.