Biology · ANATOMY OF FLOWERING PLANTS

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): The inner walls of guard cells towards the stomatal pore are highly thickened. Reason (R): Thickening of guard cell walls assists in maintaining the rigidity required to keep the stomatal pore permanently closed under all conditions. In the light of the above statements, choose the correct answer from the options given below:

1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is NOT the correct explanation of (A).
3. (A) is true but (R) is false.
4. (A) is false but (R) is true.