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22 Cards in this Set
- Front
- Back
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The division of cells parrallel to a surface
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Periclinal Division
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A pore in a leaf regulated by two guard cells; controld movements of water vapor, CO2 and 02
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Stoma
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Flared root that extends from a tree trunk to provide stability in thin soils
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Buttress Root
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A description of the shoot apical meristem as a three part dome
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Zone Model
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An undergroud food storage stem shaped like a bulb but consisting primarily of stem tissure rather than thick leaves
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Corm
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According to the cell layer model of shoot growth, the outer layer of cells in an apical meristem; equivalent to the outer part of the peripheral zone
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Tunica
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A pettern of leaf veins in most dicots and ferns, also known as reticulate venation, in which leaf veins form branching networks
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Netted Venation
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The basic pattern of leaf arrangement
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Phyllotaxy
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A region of dividing cells at each internode that allows the stem to grow rapidly all along its lenght; common in grasses
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Intercalary Meristem
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A leaf in which the blade is divided into leaflets
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Compound Leaf
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A sharp outgrowth of epidermal or cortex cells
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Prickle
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One of several flattened structures on a brown algas thallus that provides most of the surface area for photosynthesis; the flattened part of a leaf
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Blade
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A plant that grows on another plant for support but nourishes itself.
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Epiphyte
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The simplest, earliest-evolving stele, consisting of a solid cylinder comprised of both xylem and pholoem.
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Protostele
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The region of petiole where a leaf seperates from a deciduous plant.
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Abscission Zone
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In a shoot apex, shoot initial layers underlying the tunica, roughly equvalent to the central mother zone, the inner parts of the peripheral zone, and the pith zone.
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Corpus
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Loosely organized photosynthetic cells beneath the epidermis of a leaf.
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Spongy Mesophyll
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A vascular bundle inside a petiole or leaf blade.
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Leaf Vein
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A slimy polysaccharide that lubricates the passage of roots through soil; produced by outer cells of the root cap.
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Mucigel
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A slender, coiling structure that attatches a climbing plant to a supporting structure; can be modified leaves or modified stems. See also thigmotropism.
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Tendril
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A horizontal, aboveground stem, also called a runner. Compare with rizome.
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Stolon
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A plant that thrives in dry, desert environments.
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Xerophyte
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