Question

Assertion : Phototropism is a directional growth movement.
Reason : Phototrophic movement occur in the direction of light

• A. If both the assertion and reason are true and the reason is a correct explanation of the assertion
• B. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
• C. If the assertion is true but the reaon is false
• D. If both the assertion and reason are false
• E. If the assertion is false but reason is true

Answer 1

The correct option is A If both the assertion and reason are true and the reason is a correct explanation of the assertion

Phototropism is a paratonic directional growth movement of curvature which is induced and determined by the direction of light stimulus. Shoots grow towards the source of light hence called positively phototropic while roots grow from the source of light hence called negatively phototropic.