Question

How does phototropism occur in plants?

Answer 1

Phototropism:

Phototropism is the directional response of a plant that allows the plant to grow towards or in some cases away from the light.

Process of phototropism:

1. Leaf tips and stem tips have a hormone called auxin which is sensitive to light.
2. It allows the plant to positively grow towards the light source.
3. This is called positive phototropism.
4. In case the plant grows away from the light source, it is known as negative phototropism. This is usually shown by roots.

Example of a plant that shows phototropism is: Sunflower