Q. During photorespiration, the oxygen consuming reaction(s) occur in :
A) stroma of chloroplasts and mitochondria
B) stroma of chloroplasts and peroxisomes
C) grana of chloroplasts and peroxisomes
D) stroma of chloroplasts
Explanation
[Solution from source] Oxygen is taken up when RuBisCO acts as an oxygenase on RuBP in the chloroplast stroma, and again when glycolate is oxidised by glycolate oxidase in the peroxisome. Mitochondria release CO₂ in this pathway; they do not consume O₂ in it. Answer (2).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.