A. Under conditions of high light intensity and limited CO2 supply, photorespiration has a useful role in protecting the plants from photo-oxidative damage.R. If enough CO2 is not available to utilize light energy for carboxylation to proceed, the excess energy may not cause damage to plants.

• A. If Assertion (A) and reason (R) both are correct and R is explanation to A.
• B. If (A) and (R) both are correct but (R) is not an explanation to A.
• C. If A is true but R is false.
• D. If both A and R are false.