1) Layer of colourless cells that allow light to pass through to the next layer. a) Palisade mesophyll b) Spongy mesophyll c) Vein d) Upper epidermis 2) Main region of photosynthesis. These cells have many chloroplasts. a) Stomata b) Palisade mesophyll c) Guard cells d) Vein 3) Contains many air spaces to allow gases to circulate. a) Upper epidermis b) Lower epidermis c) Spongy mesophyll d) Palisade mesophyll 4) Provides protection. This layer also contains guard cells. a) Upper epidermis b) Palisade mesophyll c) Lower epidermis d) Vein 5) Found on either side of each stoma. They control the opening and closing of the stomata a) Upper epidermis b) Spongy mesophyll c) Palisade mesophyll d) Guard cells 6) Tiny pores in the leaf epidermis surrounded by guard cells that control the entry and exit of oxygen, carbon dioxide and water (Singular: stoma). a) Stomata b) Upper epidermis c) Vein d) Palisade mesophyll 7) Contains xylem and phloem which allow materials to be transported into and out of the leaves. a) Spongy mesophyll b) Guard cells c) Vein d) Palisade mesophyll

Leaf Structure Quiz

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