bio quiz 12/2

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epidermis

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epidermis

upper and lower outer layers, 1 cell layer thick (protection

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Vascular (Vein)

transport xylem - water; phloem - food

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mesophyll

where photosynthesis occurs (also called parenchyma)

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Cuticle

waxy covering on top to minimize water loss

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Guard cells

regulate the size of the stomata (only epidermal cells with chloroplasts).

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Stomata

openings in leaf - mostly on bottom, which move CO2 gas into the leaf

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Phloem

The vascular tissue through which food moves in some plants

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Xylem

Transports water

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spongy mesophyll

layer of loose tissue found beneath the palisade mesophyll in a leaf

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bundle sheath

A protective covering around a leaf vein, consisting of one or more cell layers, usually parenchyma.

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how would a leaf be classified

organ

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what two tissues are found within the vein

Xylem and phloem

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what layer in the leaf contains the most chloroplast

mesophyll layer

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what two cells are found in the mesophyll layer

Palisade and spongy

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what is the column like cell that lies under the epidermis

palisade

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what is the function of the stomata

to let carbon dioxide gas into the leaf

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what is the overall purpose of photosynthesis

to make energy

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