Question

Photorespiration takes place in which of the following organelles
A) Chloroplast and mitochondria
B) Mitochondria and peroxisome
C) Bundle sheath cells and chloroplasts
D) Chloroplast, peroxisome, and mitochondria

Answer 1

Hint: Plant organelles having their own genetic material. Organelles which absorb sunlight and only present in photosynthetic plants. It is an eukaryotic membrane bound organelles also known as microbody and found in cytoplasm.

Complete answer:
Plant organelles having their own genetic material. Organelles which absorb sunlight and only present in photosynthetic plants. It is an eukaryotic membrane bound organelles also known as microbody and found in cytoplasm.

Additional Information:
-Photorespiration takes place in higher plants which represent the severe loss to the process of light energy to fix carbon for carbohydrate synthesis.
-The photorespiration is considered as a wasteful reaction of oxygenation of RuBisCO.
-This pathway is enzymatic which does not include involvement of the electron system. Thus, does not generate ATP and does not use oxygen.
-Photorespiration produces carbon dioxide and uses a sugar-phosphate as the primary fuel.
-During photorespiration series of reactions occur in peroxisome, mitochondria, and back to peroxisome where 3- phosphoglycerate and glycerate which re enters to chloroplast ultimately goes to Calvin cycle.
So, the correct answer is, ‘Chloroplast, peroxisome, and mitochondria.’

Note:
-Photorespiration also known as C2 photosynthesis or oxidative photosynthesis is a complex network of enzyme reactions of exchange in metabolites.
-Photorespiration is a wasteful process because it prevents the plant from using ATP and NADPH to synthesis subsequent carbohydrates.
-The main enzyme RuBisCO is used in the Calvin cycle for fixation of carbon dioxide but in photorespiration, it is used in oxygen fixation.