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Photosynthesis In Higher Plants

Question
CBSEENBI11025570

The correct sequence of organelles in which glycolate and glyoxylate are produced sequentially in photorespiration is

  • chloroplast and mitochondria

  • chloroplast and peroxisome

  • peroxisome and mitochondria

  • peroxisome and chloroplast

Solution

B.

chloroplast and peroxisome

Photorespiration is a light dependent phenomenon of oxygenation of RuBP and release of CO2 by the photosynthetic organs of a plant. The site of photorespiration is chloroplast.

Phosphoglycolate produced by RuBP oxygenase activity is converted to glycolate by phosphoglycolate phosphatase in the chloroplast. Glycolate then enters the peroxisomes and is converted to glyoxylate by glycolate oxidase.

Apart from chloroplast and peroxisomes, mitochondria is also involved in the photorespiratory process.