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Nature & Animals

Which 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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