2.18 describe the structure of a leaf and explain how it is adapted for photosynthesis

        •broad leaves means large surface area exposed to sunlight

        •the waxy cuticle reduces water loss by evaporation

                  •thin and made of wax, so it doesn't obstruct light 

        •chloroplasts are in the palisade layer near the top, so they can get the most light

        •upper epidermis is transparent so that the light can pass through it to the palisade layer

        •the stomata allow carbon dioxide to enter by opening and closing 

        •the vascular bundles deliver water and nutrients to the leaf and remove glucose produced

                  •they also support the leaf 

       •adaptations for gas exchange also make photosynthesis more efficient