1) Leaves are broad so there is a larger surface area being exposed to sunlight
2) The chloroplasts are usually found in the palisade layer. This is because it is closer to the surface of the cell where they can get the most light
3) The upper epidermis is transparent so that sunlight can pass through it and onto the palisade layer
4) There are a network of vascular bundles - these are the transport vessels xylem and phloem. They deliver water and other nutrients to every part of the leaf and take away the glucose produced by photosynthesis. They also help support the leaf structure
5) The waxy cuticle helps to prevent water loss by evaporation
6) The adaptations of leaves for efficient gas exchange also make photosynthesis more efficient. E,g, the lower surface is full of little holes called stomata which let CO2 diffuse directly into the leaf
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