Question

Which one of the following is wrong in relation to photorespiration?

• A. It occurs in chloroplasts
• B. It occurs in daytime only
• C. It is a characteristic of $C_4$ plants
• D. It is a characteristic of $C_3$ plants

Answer 1

The correct option is D It is a characteristic of $C_3$ plants

Photorespiration is a biochemical process in plants in which oxygen inhibits the Calvin cycle, the carbon fixation portion of photosynthesis. It results in the light-dependent uptake of oxygen and release of carbon dioxide and is associated with the synthesis and metabolism of a small molecule called glycolate.
Hence, photorespiration is a light dependent process that occurs in chloroplasts of both C3 and C4 plants.
Photorespiration is not a characteristic of CAM plants.