Leaf Structures

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Xylem
Contains vessels that transport water and dissolved ions to leaf from roots
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Air Spaces
Allows air to come into close contact with cells for gas exchange to occur
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Upper Epidermis
Made of transparent cells so that light can penetrate easily and reach the photosynthetic layer of cells
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Guard Cell
Controls the opening and closing of the stomata to allow gas exchange to occur and prevent water loss through transpiration
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Waxy Cuticle
Made of lipid based molecules to prevent evaporation of water from the upper surface of the leaf
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Spongy Mesophyll
Loosely packed cells to allow gases to penetrate the cells where gas exchange occurs, these cells photosynthesis
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Palisade Mesophyll
Regular column shaped cells that are the main photosynthetic cells, these cells contain many chloroplasts that circulate around the cytoplasm
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Stomata
Pores found mainly in the lower epidermis that allow gases to enter and leave the leaf. Gases move by diffusion - moving down their concentration gradients.
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Other cards in this set

Card 2

Front

Allows air to come into close contact with cells for gas exchange to occur

Back

Air Spaces

Card 3

Front

Made of transparent cells so that light can penetrate easily and reach the photosynthetic layer of cells

Back

Preview of the back of card 3

Card 4

Front

Controls the opening and closing of the stomata to allow gas exchange to occur and prevent water loss through transpiration

Back

Preview of the back of card 4

Card 5

Front

Made of lipid based molecules to prevent evaporation of water from the upper surface of the leaf

Back

Preview of the back of card 5
View more cards

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