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| in plants, single layer of cells that makes up dermal tissue; in humans, the outer layer of the skin |
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| substance in vascular plants that makes cell walls rigid |
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| type of xylem cell that forms part of a continuous tube through which water can move |
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| continuous tube through the plant phloem cells, which are arranged end to end |
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| in plants, phloem cell that surrounds sieve tube elements |
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| main type of ground tissue in plants that contains cells with thin cell walls and large central vacuoles |
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| in plants, type of ground tissue that has strong, flexible cell walls; helps support larger plants |
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| type of ground tissue with extremely thick, rigid cell walls that make ground tissue tough and strong |
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| regions of unspecialized cells responsible for continuing growth throughout a plant's lifetime |
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| group of unspecialized cells that divide to produce increased length of stems and roots |
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