Which metabolic shift occurs when prolonged drought forces plants to extensively close their stomata?

💡 Explanation

When stomata close extensively during drought, CO2 entry decreases and O2 accumulates, increasing photorespiration because Rubisco binds O2 instead of CO2, forming glyoxylate. Therefore, photorespiration increases, rather than increased glycolysis, decreased Calvin cycle, or nitrogen fixation, which are not directly CO2-limited processes.

• Which mechanism reduces hydrostatic pressure effects on deep sea fish swim bladders when ascending?
• Which outcome prevents complete metamorphosis during pupal ecdysis?
• Which mechanism facilitates coral reef nutrient uptake when exposed to increased ocean acidity?
• Which outcome occurs in a fish gill when blood flow reverses direction relative to water flow?
• Which process directly triggers the pupal stage during insect metamorphosis?
• Which constraint arises when a plant maintains high Rubisco concentrations?