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Simplified photorespiration and Calvin cycle. Photorespiration (also known as the oxidative photosynthetic carbon cycle, or C2 photosynthesis) is a process in plant metabolism which attempts to reduce the consequences of a wasteful oxygenation reaction by the enzyme RuBisCO.
Photorespiration is a metabolic pathway of plants as an alternative to situations where the stomata close and oxygen concentration exceeds carbon dioxide concentration.hotorespiration: RuBP accepts oxygen instead of CO2 during photosynthesis because production of oxygen has exceeded production of CO2. respiration: Oxygen is produced in oxi â¦ dative phosphorylation/chemisosmosis and used to produce water during respiration.