Question

Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A): C4 plants usually do not reach radiation saturation in direct sunlight.
Reason (R): C4 plants use high radiation levels more efficiently at low levels than under full sunlight.
In light of the above statements, choose the correct answer from the options given below.

• A. Both (A) and (R) are true and (R) is the correct explanation of (A).
• B. Both (A) and (R) are true but (R) is NOT the correct explanation of (A).
• C. (A) is true but (R) is false.
• D. (A) is false but (R) is true.

Hint:

C4 plants (maize, sorghum, sugarcane) have evolved to utilize intense solar radiation without saturating, thanks to their carbon-concentrating Kranz anatomy.
This makes them highly productive in high-light, warm tropical environments compared to C3 plants.

Answer 1

The Correct Option is C