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← Nature & AnimalsWhich modification increases crop yield when daytime temperatures induce photorespiration?
A)Increased rubisco catalytic efficiency
B)Enhanced CAM photosynthesis pathway✓
C)Suppressed cytochrome oxidase activity
D)Reduced mitochondrial electron transport
💡 Explanation
Higher temperatures cause photorespiration, limiting yield; switching to CAM uses temporal separation of carbon fixation (at night) and the Calvin cycle (day) to avoid photorespiration. Therefore, water loss is diminished and increased crop yield results, rather than increasing other metabolism.
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