Anatomy of a Plant, Roots, The Shoot System

	Three. Ground, vascular, and dermal.
	Support structure and is a passageway for the transport of water and minerals from the soil.
	vessel elements and tracheid cells.
	A "highway" foro plants, assisting in the movement of sugars.
	Sieve-tube elements
	provides the protective outer coating for plants.
	portions of the plant that are below the ground
	the portions of the plant that are above the gournd
	live cells that provide flexible and mechanical support found in stems and leaves
	the most prominent of the three types; found in leaves are called mesophyll cells and allow CO2 and O2 to diffuse through intercellular spaces
	protect seeds and support the plant
	a category of xylem cell, move water more efficiently than tracheid cells
	a category of xylem cell that functions in the passage of water
	a coating that attemps to keep infectious agents out, and water and nutrients in
	withen the epidermis, control the opening and closing of the stomata
	hair-like structures extinding from root tips' surface that create a larger surface area for absorption
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	structure that assists in the movements of sugars from one place to another
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	roots that start as one thick root on entrance into the ground, and then divide into smaller and smaller branches
	the smaller and smaller roots of a taproot system that serve to hold the plant in place
	provide plants with a very strong anchor in the ground without going very deep into the soil
	the cells that compose the innermost layer of the cortex, that are important because the walls between these cells create an obstacle
	the obstacle made by the cells walls of the endodermis cells, which blocks water from passing
	composed of a collection of cells known as the pericycle
	cells that grow as long as they are alive
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	a protective structure that keeps the roots from being damaged during push through soil
	section of root where cells are actively dividing
	next sectionup along the root, where cells absorb H2O and increase in length to make the plant taller
	section of root past the zone of elongation where the cells differentiate to their finalized form