How must desert succulents modify stomatal function to prevent excessive water loss in hot, arid climates?

A)Open during cooler nighttime hours✓

B)Close stomata regardless of conditions

C)Increase stomatal density on leaf surfaces

D)Maintain constant stomatal aperture size

💡 Explanation

In hot climates, CAM plants utilize temporal separation to minimize water loss because the stomata open during the cooler nighttime hours to fix CO2 via the enzyme PEP carboxylase. Therefore, they open at night, rather than constantly being open (losing water), closed (starving from CO2), or increasing density (more H2O loss).

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How must desert succulents modify stomatal function to prevent excessive water loss in hot, arid climates?

💡 Explanation

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