Which outcome occurs when a CAM plant experiences prolonged drought during the night cycle?

💡 Explanation

When a CAM plant experiences prolonged drought at night, stomatal closure prevents CO2 intake, restricting the dark reaction's carbon fixation via PEP carboxylase needed to produce malate, reducing its overnight accumulation. Therefore, reduced malate results, rather than increased photorespiration, enhanced daytime fixation, or elevated transpiration, each requiring different metabolic conditions.

• Which physiological challenge necessitates countercurrent exchange in fish swim bladders when increasing depth?
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• Which mechanism maintains cellular function when saltwater fish osmoregulate?
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• Which consequence arises in legume root nodules when the nitrogenase enzyme's iron cofactor becomes poisoned by excessive oxygen?