waxy layer - stops too much water getting in, chloroplast - where the photosynthesis happens, photosynthesis - how plants make food, stoma - a hole in the bottom of the leaf to let carbon dioxide in and water and oxygen out, guard cell - opens and closes the stoma, air space - to allow carbon dioxide and oxygen to pass in and out of the cells, palisade layer - lots of upright cells with lots of chloroplasts where most of the photosynthesis happens, spongy layer - where nutrients, food and water can pass in and out of the leaf,

Structure of a leaf

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