The equation for photosynthesis is 6CO2 + 6H20 + Sunlight --> C6H12O6 + 6O2. The leaf takes in energy, water and sunlight in order to create C6H12O6 (The process of photosynthesis.) Chloroplasts are found inside of the Palisade layer. The cells are packed together in order to bond and create the overall structure of the leaf. Air space is located in the spongy mesophyll and supports the exchange of Carbon Dioxide and Oxygen. The guard cells found in a leaf pull apart from each other, opening the stoma and allowing the escape of water vapor and the exchange of gases. The cuticle layer is a water-impervious protective layer that covers the epidermal cells of leaves and other parts and limits water loss. The veins supply support for the leaf and contain xylem and pholem.