Shared Flashcard Set

Details

plant structure and function
practicum notes
19
Biology
Undergraduate 2
04/24/2011

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Cards

Term
Meristem
Definition
Specific regions in stem that undergo mitosis; it is this mitotic cellular division that is the source for all cells in plants
Term
Transpiration
Definition
Process by which excess water is shed
Term
Roots
Definition
Underground structure of plant; anchors plants & absorbs and transports nutrients
Term
Stems
Definition
Central axis to support above ground portion of plant
Term
Leaves
Definition
Site of photosynthesis;one of 3 major organs in plants
Term
Types of roots
Definition
Fibrous roots, tap roots, and adventitious roots
Term
Xylem
Definition
Conveys water & minerals up through the stems and leaves
Term
Phloem
Definition
Vascular tissue that moves dissolved sugars and other products from leaves to other parts of the plant
Term
Cambium
Definition
A lateral meristem in plants
Term
Epidermis
Definition
Outermost layer of root consisting of epitilial cells;Dermal tissue; protection of root
Term
Cortex
Definition
Region of stem/root between epidermis and vascular bundle; storage of photosynthetic products
Term
Vascular bundles
Definition
groups of Xylem, phloem and cambium cells in stems of plants, descended fromthe procambium embryonic tissue layer
Term
Pith
Definition
Central area in plant stems. made mostly of parenchyma tissue; modified for storage
Term
Stem Modifications
Definition
morphological process where a bound morpheme occurs simultaneously with a root or a stem
Term
Cuticle
Definition
A film made of wax and cutin on external surface of plant stems and leaves; helps prevent water loss as well as sheds excessive exterior moisture
Term
Guard Cells
Definition
Specialized epidermal cellsthat flank stomates; opening and closing regulates gas and water loss
Term
Palisade Parenchyma
Definition
Columnar cells located just below the upper epidermis in leaves; most of light in photosynthesis occurs here
Term
Spongy Mesophyll
Definition
Parenchyma cells found in plant leaves; irregularly shaped & have large intracellular spaces
Term
Stomata
Definition
Tiny pores which allow carbon dioxide to get in the leaf and oxygen to get out
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