Photosynthetic efficiency is central to how plants capture and convert solar energy into chemical energy that fuels their growth and development. This session highlights the molecular mechanisms behind light harvesting, electron transport, and carbon fixation in chloroplasts. Experts will discuss how variations in light intensity, wavelength, and availability of nutrients impact the rate of photosynthesis. Special emphasis will be given to innovations in improving crop yields by genetically engineering plants with enhanced photosynthetic capacity. The session also explores how stress conditions such as drought, salinity, and temperature extremes reduce photosynthetic performance and productivity. Research on C3, C4, and CAM pathways will be compared to identify strategies that maximize carbon fixation efficiency. The role of photosystems I and II in optimizing light utilization will be examined in detail. Attendees will also learn about advanced techniques such as chlorophyll fluorescence imaging to measure efficiency in real time. By bridging molecular biology, physiology, and agricultural applications, this session will offer actionable insights for both researchers and farmers. The discussion will also include bioengineering approaches to reduce photorespiration losses. Attendees will leave with a comprehensive understanding of the constraints and potential breakthroughs in enhancing photosynthetic performance for food security.