Biology Transport + Exchange in Plants

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Apoplast Pathway
Route taken by water between cells through cell walls in plants
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Cambium
Plant tissue in the stem and root that contains dividing cells
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Casparian *****
***** of waterproof material in the cell walls of root endodermis cells which blocks the apoplast pathways
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Companion Cell
Cell in the phloem involved in actively loading sucrose into the sieve tube elements. Is closely associated with a phloem sieve element
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Cortex
Tissue in plant roots and stems between epidermis and vascular tissue
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Endodermis
Ring of cells between the cortex of a root and the area housing the xylem and phloem
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Epidermis
Outer single layer of cell in plants surrounding the tissues of roots, stems and leaves
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Guard Cells
Form the stomatal pore in the epidermis plants,controlling the opening by and closing by turgidity
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Lignin
Waterproofing substance that impregnates the walls of xylem tissue
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Parenchyma
Unspecialised plant cells that have living contents and thin permeable cellulose cell walls and support young plants
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Pericycle
Layer of cells in root that lies inside endodermis and consists of meristematic cells
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Pits
Thin areas in lignified walls of xylem tissue cells that allow communication between adjacent cells
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Plasmodesma
Strand of cytoplasm that links cell contents of adjacent plant cells through a pit
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Plasmolysis
Detachment of the plasma membrane from the cell wall as cytoplasm shrinks
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Potometer
Apparatus used to measure water uptake in a leafy shoot, estimating rate of transpiration
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Sieve Tube Element
Cell found in phloem tissue where sap containing sucrose is transported through. Has little cytoplasm, no nucleus, non-thickened cellulose walls, end walls with holes forming sieve plates for sap to pass through
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Solute
Solid that dissolves in liquid
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Solvent
Liquid that dissolves solids
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Symplast Pathway
Route taken by water through cytoplasm of plant cells
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Translocation
Movement of sucrose and other substances up and down the plant
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Vacuolar Pathway
Pathway taken by water in plants as it passes from cell to cell via the cell cytoplasm and vacuole
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Vascular Tissue
Transport tissue in a plant
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Xerophyte
Plant specially adapted to living in dry areas
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Other cards in this set

Card 2

Front

Cambium

Back

Plant tissue in the stem and root that contains dividing cells

Card 3

Front

Casparian *****

Back

Preview of the front of card 3

Card 4

Front

Companion Cell

Back

Preview of the front of card 4

Card 5

Front

Cortex

Back

Preview of the front of card 5
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