Ownclasses

During photorespiration, the oxygen-consuming reaction(s) occur in

  • stroma of chloroplasts and mitochondria

  • stroma of chloroplasts and peroxisomes

  • grana of chloroplasts and peroxisomes

  • stroma of chloroplasts

Answer

B.

stroma of chloroplasts and peroxisomes

The first reaction of photorespiration occur in stroma of chloroplast. In this reaction the RuBP(Ribulose 1-5 biphosphate) consume one oxygen molecule in presence of enzyme Rubisco.
In peroxisome the glycolate transferred  from chloroplast takes up O2 and formed the glyoxylate whereas the H2O2 release as byproduct.

The first reaction of photorespiration occur in stroma of chloroplast. In this reaction the RuBP(Ribulose 1-5 biphosphate) consume one oxygen molecule in presence of enzyme Rubisco.
In peroxisome the glycolate transferred  from chloroplast takes up O2 and formed the glyoxylate whereas the H2O2 release as byproduct.