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

💡 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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