Which outcome occurs when prolonged drought restricts desert succulents’ stomatal opening?

💡 Explanation

When drought restricts stomatal opening, CO2 intake decreases disproportionately to O2 levels because gas exchange depends on stomata diffusion gradients, driving photorespiration by Rubisco. Therefore photorespiration reduces photosynthetic efficiency, rather than fixation, transpiration or root growth which depend on different metabolic pathways and preconditions.

• Which regulatory mechanism facilitates survival for salmon migrating from freshwater to saltwater environments?
• Which outcome reduces blood oxygen saturation under increased activity in fish?
• Which mechanism enables emperor penguins to minimize heat loss during shivering in antarctic winters?
• Which limit in nutrient availability MOST impacts the C4 photosynthetic pathway efficiency relative to standard C3 pathway?
• Which effect disrupts crassulacean acid metabolism (CAM) in succulents under consistently humid conditions?
• Which outcome occurs in CAM plants during the night due to temporal separation of pathways?