Assertion:Light is very important factor in transpiration.
Reason:It induces stomatal opening and darkness closing.Therefore, transpiration increases in light decreases in dark .
A. If both assertion and reason are true and the reason is a correct explanation of the assertion.
B. If both assertion and reason are true but reason is not a correct explanation of the assertion.
C. If the assertion is true but reason is false.
D. If both assertion and reason are false.