What is photorespiration? Describe the techniques used by C3, C4, and CAM Plants to minimize photorespiration. Please provide AP Level explanation.

Photorespiration is when plants take in oxygen and light and release carbon dioxide. Contrary to photosynthesis. C3 plants have no system to minimize photorespiration, C4 plants minimize photoresperiation by separating the initial CO2 fixations and the Calvin cycle to be performed in different types of cells. CAM plants minimize photorespiration by taking CO2 by opening their stomata at night and then keeping the stomata closed during the day while they do photosynthesis.

ahsan57900 ahsan57900 · Answer 2 · 2021-08-12T15:57:37+02:00

Photorespiration is the opposite of photosynthesis.

Photorespiration is a process that occurs in many higher plants in which the plant take up oxygen in the presence of light and releases carbon dioxide that is opposite to the pattern of photosynthesis.

C4 plants minimize photorespiration by using PEP enzyme during the first step of carbon fixation whereas the CAM plants closed stomata at daytime in order to avoid photorespiration. In C3 plants, the mesophyll cells is responsible to minimize or avoid photorespiration.

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