Upper epidermis - Tissue found on the top of a leaf that is thin and transparent to allow light through, Palisade mesophyll - Tissue found near the top of the leaf that contains lots of chloroplasts to absorb light for photosynthesis, Spongy mesophyll - Tissue found in the middle of the leaf that has lots of air spaces to allow carbon dioxide to diffuse through the leaf and increase surface area, Waxy cuticle - A layer on the top and bottom of the leaf that is made of wax to protect the leaf, Guard Cells - Type of cell that controls the opening and closing of the stomata depending on conditions, Stomata - Tiny holes/pores found on the bottom of leaves, allow gases to diffuse in and out of the leaf, e.g. water vapour and carbon dioxide, Xylem - The tube that transports water and mineral ions up from the roots, Phloem - The tube that transports sugars (glucose) up and down a plant, Lower epidermis - Tissue found towards the bottom of the leaf with lots of stomata which allow gases to diffuse in and out, Chloroplast - Part of a cell responsible for absorbing light and carrying out photosynthesis,

Leaf Structure Functions

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