Which risk dramatically increases for C4 plants under sustained drought compared to CAM plants?

💡 Explanation

Under drought, C4 plants with fixed stomata need to constantly transport compounds causing more extensive photorespiration reactions because oxygen concentration rises, and usable carbon declines. This differs from CAM cycling, resulting in photoresporation reduction rather than rubisco limits, cell damage or dangerous CO2 concentration within tissues.

• Which outcome limits successful arousal from hibernation during periods of frequent environmental temperature fluctuations?
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• Which metabolic impact occurs when rubisco initiates photorespiration during intense illumination?
• Which aerodynamic effect occurs when a soaring bird actively adjusts its flight feathers to increase lift?
• Which risk increases for hibernating mammals during interbout arousal with disrupted vasodilation?
• Which mechanism governs the caste determination of larval honeybees?