Photosynthesis Question 65
65. During photorespiration, the oxygen consuming reaction(s) occur in
[2006]
(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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Answer : a
Hints & Solution
(a) Photorespiration is the process which occurs in $C_3$ plants. In this process, peroxisomes, chloroplast and mitochondria take part. The oxygen consuming reactions occurs in peroxisomes and stroma of chloroplast while $CO_2$ releasing reaction occurs in mitochondria.