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31 Cards in this Set
- Front
- Back
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direction of primary growth
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length of plant (height)
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definition: apical meristems
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meristematic tissue in tips of roots and stems
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definition: meristematic tissue
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undifferentiated, unspecialized tissue, like embryonic plant tissue,. gives rise to other plant tissue, continue to divide throughout the life of a plant
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direction of secondary growth
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growth in girth (diameter)
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meristematic tissue for primary growth and secondary growth
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primary growth: apical meristems
secondary growth: secondary (lateral) meristems, such as vascular cambium and cork cambium |
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name 3 kinds of ground tissue
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1) parenchyma
2) collenchyma 3) sclerenchyma |
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function of parenchyma
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food storage
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most widely distributed tissue
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parenchyma
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ground tissue living at maturity
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parenchyma, collenchyma, some sclerenchyma
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ground tissue dead at maturity
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some sclerenchyma
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ground tissue with primary cell walls only
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parenchyma, collenchyma
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ground tissue with thick lignified (woody) secondary cell wall
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sclerenchyma
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primary function of collenchyma
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support
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primary function of sclerenchyma
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support and protection
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vascular tissue: types and function
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specialized TRANSPORT cells arranged end to end to form tubes
includes xylem and phloem |
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function of xylem
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conducts water and dissolved minerals
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tracheid cells
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type of xylem cell:
primary and secondary cell walls also functions in support dead at maturity |
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vessel member
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type of xylem cell:
primary and secondary cell walls wider than tracheid cells, so better at conducting water dead at maturity |
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function of phloem
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transport food, especially sucrose, from leaf and stem (where photosynthesis takes place) to the rest of the plant
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sieve cells
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type of phloem:
living at maturity but lacks nucleus, ribosomes and other organelles |
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structure connecting sieve cells
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sieve plate
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function of companion cell
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type of phloem:
supplies sieve cells |
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dermal tissue
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single layer of cells that serves as an outer covering of roots, stems and leaves
may have root hairs or waxy cuticles examples: guard cells and stomata |
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two regions of ground tissue
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1) pith (central core)
2) cortex (outer layer) |
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types of primary meristems produced by apical meristem
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1) protoderm
2) procambium 3) ground meristem |
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meristem that produces epidermis
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protoderm
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meristem that produces primary phloem
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procambium
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meristem that gives rise to primary xylem
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procambium
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meristem that gives rise to ground tissue
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ground meristem
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type(s) of tissue protoderm gives rise to
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epidermis
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type(s) of tissue procrambium gives rise to
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1) primary xylem
2) primary phloem |
