Question

his question consist of two statements, assertion and reason. While answering this question you are required to choose any one of the following five responses.

Assertion: CAM plants lack structural compartmentation of leaf as found in $C_4$ plants.

Reason: Stomata of CAM plants are open during the day.

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

Answer 1

The correct option is E If assertion is true but the reason is false.

$\text{Assertion-Reason relation}$

$C_4$ plants have mesophyll and bundle sheath cells of their leaves that take part in photosynthesis. But in case of CAM plants, only the vacuoles and chloroplasts take part in the photosynthesis. There is no specific compartmentation found in them.

CAM plants have scotoactive stomata that remain closed during the day and open during the night.

Hence, the assertion statement is correct but the reason statement is incorrect.

$\text{Final answer}$

(c) If assertion is true but the reason is false.