Question

How do plants respond to light and gravity?

Answer 1

Response of plants to light and gravity:

1. Generally, plants respond directly to the gravity of the earth by growing towards or away from the earth, influenced by biochemical signals.
2. Roots go downwards in the direction of gravity while the stem and other aerial plant parts go upwards in the opposite direction of gravity.
3. The movement of plants due to gravity is called gravitropism.
4. They also do respond to the light.
5. The aerial parts respond positively and grow towards the light whereas the roots respond negatively and grow backward to light.
6. The movement due to lights is known as phototropism.