Question

Which organelles are involved in photorespiration?

• A. Chloroplast, peroxisome and mitochondria
• B. Lysosome, peroxisome and mitochondria
• C. Golgi apparatus, lysosome and peroxisome
• D. Golgi apparatus, mitochondria and ribosome

Answer 1

The correct option is A Chloroplast, peroxisome and mitochondria

Rubisco is an enzyme used for fixation of carbon dioxide through Calvin cycle. The high concentration of oxygen hinders the Calvin cycle and allows the oxygenation of rubisco and leads to the formation of 2-phosphoglycolic acid which is metabolized by the process of photorespiration into PGA which further enters the Calvin cycle . The process of photorespiration takes place in sequential steps in three major organelles. These are chloroplast, peroxisomes and mitochondria.
So, the correct answer is option A.