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← Nature & AnimalsA desert cactus experiences high daytime temperatures; which mechanism minimizes water during its CO₂ intake?
A)Crassulacean acid metabolism cycling✓
B)Increased root osmotic gradient
C)Decreased leaf surface area
D)Enhanced xylem water conduction
💡 Explanation
CAM plants use temporal separation; stomata open at night, incorporating CO₂ into organic acids. This carbon store releases it during the day for photosynthesis, rather than opening stomata when water loss is high. Therefore CAM cycling minimizes water loss.
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