Difference Between Respiration and Photorespiration: Following are the points of difference between Respiration and Photorespiration. Dark (Normal) Respiration Photorespiration It takes place almost in all the cells of the plant. It occurs in the green photosynthesizing cells. It occurs both in light and dark. It takes place only in the presence of light. It is a breakdown of the respiratory substrate with oxygen as the terminal oxidant. It is direct oxidation of photosynthetic intermediates. It is found in all types of plants, animals and other organisms. It is restricted to C3 plants. There is a generation of usable energy in … Continue reading Difference Between Respiration and Photorespiration