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

(a) Stroma of chloroplasts and peroxisomes

(b) Grana of chloroplasts and peroxisomes

(c) Stroma of chloroplasts

(d) Stroma of chloroplasts and mitochondria

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1 Answers

Correct option (a) Stroma of chloroplasts and peroxisomes

Explanation :

The first reaction of photorespiration occurs in stroma of chloroplast. In this reaction the RuBP, (Ribulose 1-5 biphosphate) consumes 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 released as by product.

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