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 risk increases when a bird's air sacs are compromised during high-altitude flight?
• Which outcome occurs when a marine mammal moves from tropical water into arctic water and cannot maintain constant body temperature?
• Which outcome reduces nutrient availability when transpiration decreases in plants?
• Which risk increases when bat cave acoustics degrade?
• Which metabolic constraint increases when leaf temperature rises, out pacing Carbon uptake with rubisco?
• Which mechanism prevents airflow stall at high angles of attack in soaring birds like eagles?