CP Bio
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17 terms
Terms | Definitions |
|---|---|
 parenchyma | the most abundant kind of plant cells |
| collenchyma | long cells with unevenly thickened walls. this type of cell wall allows the cells to grow |
| sclerenchyma | cells with walls that are very thick and rigid. at maturity these cells often die, leaving cell walls to provide support for the plant. |
| epidermis | dermal tissue that is composed of flattened parenchyma cells that cover all parts of the plant |
| stomata | openings in the cuticle of the leaf that control the exchange of gasses. |
| guard cells | cells that control the opening and closing of the stomata |
| trichomes | hairlike projections that extend from the epidermis |
| xylem | plant tissue composed of tubular cells that transports water and minerals from the roots to the rest of the plant |
| tracheids | tubular cells, with tapered ends, which transport water throughout the plant |
| cork cambium | lateral meristem that produces a tough covering for the surface of stems and roots |
| phloem | vascular tissue that transport sugars from the leaves to all parts of the plant |
| sieve tube member | long, cylindrical phloem through which sugars and organic compounds flow. |
| companion cell | nucleated cells that help manage the transport of sugars and other organic compounds through the sieve cells of the phloem |
| meristem | areas where new cells are produced |
| apical meristem | growth tissue found at or near the tips of plants |
| vessel element | tubular cells that transport water throughout the plant. these cells are wider and shorter tracheids |
| vascular cambium | lateral meristem that produces new xylem and phloem cells in the stems and roots |
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