Question

Response of a plant to the change in relative length of the day and night is called phototropism.

• A. True
• B. False

Answer 1

The correct option is B

False

Phototropism is the growth of a plant or other organism in response to light, either towards the source of light (positive phototropism) or away from it (negative phototropism). The response of a plant to change in relative length of day and night is called photoperiodism.