Plant ecophysiology accounts for how plants combine physiology with ecological adaptation. During this session, gas exchange, stomatal control, and photosynthetic efficiency in varying habitats will be discussed. Delegates will understand how plants reconcile water relations and carbon assimilation. The session emphasizes physiological responses to stress factors like drought, heat, and salinity. Scientists will share field research connecting physiological characteristics with ecological success. Participants will learn about functional properties that are predictive of adaptation in ecosystems. The session also highlights applications of ecophysiology for predictive climate impacts. Case studies will demonstrate ecophysiological adaptations in crops and wild plants. Participants will learn about how physiological characteristics are measured in natural habitats. This session integrates physiology, ecology, and environmental science with an in-depth understanding of adaptation in plants across scales.