Which outcome is observed when excessive abscisic acid causes prolonged stomatal closure?

💡 Explanation

When abscisic acid triggers prolonged stomatal closure, carbon dioxide diffusion gets restricted, increasing oxygen concentration relative to carbon dioxide near RuBisCO causing photorespiration. Therefore photorespiration occurs, rather than enhanced nitrate uptake, increased chlorophyll synthesis, or root growth, all requiring open stomata.

• Which outcome negatively impacts fish when increased sediment load diminishes gill function?
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• Which prey outcome occurs when an inland taipan snake injects venom?