Assertion : Under conditions of high light in | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) Photorespiration is a process that occurs when $CO_2$ levels are low and $O_2$ levels are high,causing the enzyme $RuBisCO$ to act as an oxygenase

Vedclass · Accepted Answer

If the Assertion is correct but Reason is incorrect.

Vedclass · Answer

(C) Photorespiration is a process that occurs when $CO_2$ levels are low and $O_2$ levels are high,causing the enzyme $RuBisCO$ to act as an oxygenase rather than a carboxylase.Under high light intensity,if $CO_2$ is limited,the light energy absorbed by the photosynthetic apparatus cannot be fully utilized for the Calvin cycle.This excess energy can lead to the formation of reactive oxygen species $(ROS)$,which cause photo-oxidative damage to the plant cells.Photorespiration helps dissipate this excess energy by consuming $O_2$ and $ATP$,thereby protecting the photosynthetic machinery from damage.Therefore,the Assertion is correct,but the Reason is incorrect because the excess energy,if not utilized,$DOES$ cause damage to the plants.

Similar Questions

Photorespiration takes place in which of the following cell organelles?

Select the incorrect statement regarding photorespiration.

Statement $A$: Photorespiration decreases photosynthetic output.
Statement $B$: In photorespiratory pathway,neither $ATP$ nor $NADPH$ is produced.

Photorespiration is called

During photorespiration,in which organelle is $CO_2$ released?

Vedclass Test Series

Exam Paper Generator

Online Exam Module