Which structural change accelerates photorespiration in plants grown at high temperatures?

💡 Explanation

When plants experience high temperatures, the rubisco enzyme's active site conformation weakens because increased thermal kinetic energy disrupts its precise structure, making it more likely to bind with oxygen instead of carbon dioxide. Therefore this accelerates photorespiration, rather than stomatal closure, chlorophyll degradation, or thylakoid damage, which involve distinct pathways and mechanisms.

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