Assertion: Film forming chemical should not be used for cheking transpiration.
Reason: film forming chemicals interrupt photosynthesis and respiration.

Options

A. If both the assertion and the 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 reason is false
D. If both the assertion and reason are false

Answer

D

Explanation

Film forming compound when applied to the leaves the process of transpiration and vapourization is checked. As a result leaf temperature rises to a level where. As a result leaf temperature rises to a level where the leaf shrinks and dies. Film forming chemical allows the exchange of gases and thus it does not interrupt