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← Nature & AnimalsWhich outcome inhibits energy production in plants subjected to high oxygen concentrations?
A)Photorespiration consumes ATP and NADPH✓
B)Increased electron transport chain efficiency
C)Enhanced carbon fixation by rubisco
D)Stomata fully close, maximizing photosynthesis
💡 Explanation
Photorespiration occurs as a consequence of rubisco binding O₂ rather than CO₂, therefore consuming ATP and NADPH. This inhibits productive carbon fixation because the plant generates fewer sugars in these conditions, rather than increased photosynthesis.
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