Which risk increases when mesophyll photosynthesis rate limits sugar production?

💡 Explanation

Photorespiration increases because high O₂/CO₂ ratios trigger RuBisCO oxygenation rather than carboxylation. Therefore, photosynthetic quantum yield decreases, rather than RuBisCO binding improving or CAM upregulation accelerating.

• Which outcome occurs when fish gills experience reduced water flow despite normal blood flow?
• Which consequence emerges when a sea anemone discharges nematocysts?
• Which risk increases for migratory birds when artificial nighttime skyglow obscures celestial cues?
• Which consequence occurs to salmon returning to natal rivers solely navigating by their olfactory system?
• Which outcome occurs when a plant experiences excessive photorespiration due to sustained high oxygen level around rubisco?
• Which risk increases when CAM plants close stomata during daylight hours in hot arid environments?