Structure of a leaf
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6 Terms
1
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Waxy cuticle
prevents water loss
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Upper epidermis
‘Skin’ layer that prevents pathogen from entering.
the leaf is thin and translucent to allow light through to the palisade layer.
3
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Palisade mesophyll
Main site of photosynthesis.
Cells positioned to maximize exposure to light.
Cells full of chloroplasts.
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Spongy mesophyll
Site of gaseous exchange.
5
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Vascular bundle
Contains:
Xylem - carries water and dissolved minerals from roots to leaves.
Phloem - carries products of photosynthesis from leaves to the rest of plant.
6
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Lower epidermis
‘Skin’ layer
Has specialized guard cells that can control the size of the stomata (swell or deflate.)