Which consequence occurs when rubisco's affinity shifts toward oxygen, specifically in hot, arid plant environments?

💡 Explanation

Rubisco's active site binds oxygen rather than carbon dioxide during hot conditions, initiating photorespiration; this is because increased temperatures inhibit carbon dioxide selectivity. Therefore, photosynthetic efficiency decreases rather than increases, favoring photorespiration over carbon fixation.

• Which mechanism limits photosynthetic efficiency when CAM plants transition from night acid accumulation to daytime?
• Which aerodynamic effect primarily sustains avian soaring flight during periods of no flapping?
• Which mechanism triggers adult eclosion from the pupal cuticle following competence stage?
• Which outcome occurs when algal blooms reduce light penetration affecting submerged bladderwort patches?
• During intense heat stress, which outcome occurs when stomatal closure limits carbon dioxide?
• When migratory birds encounter reduced oxygen partial pressure at high altitudes, which physiological response primarily aids flight endurance?