Which photosynthetic outcome occurs when tropical plants exceed their thermal niche?

💡 Explanation

As plants near thermal limits, rubisco binds more O2 than CO2 promoting photorespiration. The underlying mechanism is that the increasing temperature alters the enzymatic selectivity of rubisco: leading to increased O2. Therefore photorespiration increases, rather than C4 pathway efficiency improving.

• Which lift reduction occurs when bird feathers separate?
• Which risk increases when waterfowl preen excessively, removing crucial feather oil?
• Which risk increases when a bird's air sacs are compromised during high-altitude flight?
• Which effect accompanies olfactory disruption from anosmia induction?
• Which biomechanical consequence occurs when raptors use thermal soaring with reduced wing twist near wingtips?
• Which outcome results when internal 'olfactory maps' degrade?