Which challenge arises when C3 plants close stomata?

💡 Explanation

Photorespiration increases because when stomata are shut, oxygen builds up inside the leaf, and rubisco starts fixing oxygen rather than CO2. Therefore, wasteful photorespiration increases; rather than efficient photosynthesis, depleting the Calvin cycle which operates downstream.

• Which outcome directly limits long-duration high-altitude avian flight when air sacs cannot fully inflate?
• Which metabolic consequence arises when high temperatures trigger widespread stomata closure in C4 plants?
• Which consequence results when a xylem embolism forms in an oak tree during a drought?
• Which adaptation enhances worker bee foraging efficiency following a waggle?
• Which outcome occurs when terrestrial insects close their spiracles?
• Which outcome delays adult eclosion when a lepidopteran pupa experiences increased octopamine levels towards metamorphosis?