Transcription: Green plants make food through a process called photosynthesis. Using energy from the sun, cells in the leaves turn simple materials into energy-rich food. The epidermis is the skin. Beneath the upper epidermis lie the palisade cells, which are the chief food producers. Spongy cells are partly surrounded with pockets of air, which enable the cells to exchange gases with the atmosphere. The stomata are small opening in the lower epidermis under the leaf. Leaf veins carry water and nutrients from the roots. Carbon dioxide enters through the stomata. Chlorophyll, contained in cells of the palisad ...
(.mp3)