Respuesta :
Under conditions of excess oxygen, rubisco will use o2 instead of co2 and less carbon is fixed. This process is called Photorespiration.
What is Photorespiration?
Photorespiration is the process by which molecular oxygen (O2) is taken up by light and carbon dioxide (CO2) is released from organic compounds. The gas exchange is similar to respiration and works in the opposite direction of photosynthesis, where CO2 is fixed and O2 is released.
Carbon fixation produces two molecules, 3-phosphoglycerate (PGA), which enter the Calvin cycle and eventually form sugars.
To learn more on Photorespiration from the link:
https://brainly.com/question/2560710
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