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← Nature & AnimalsWhich consequence occurs when rubisco's efficiency decreases within eucalyptus leaves encountering elevated atmospheric CO₂?
A)Increased photorespiration and energy loss✓
B)Enhanced water-use efficiency via transpiration
C)Elevated plant biomass secondary production
D)Acceleration of C4 photosynthetic pathway
💡 Explanation
Increased CO₂ favors carboxylation but decreased rubisco efficiency leads to relatively more oxygenation, causing photorespiration, because rubisco binds O₂ instead of CO₂; therefore, energy loss will increase, rather than biomass increase or improved water use.
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