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Chap 26 Vocab Bio
| Term | Definition |
|---|---|
| Dermal Tissue | Forms the protective outer layer of a plant |
| Ground Tissue | Makes up much of the inside of the nonwoody parts of a plant |
| Epidermis | Dermal tissue that covers the outer parts of nonwoody plants |
| Cork | Dermal tissue on woody stems and roots consists of several layers of dead cells |
| Vessels | Gnetophytes and flowing plants that have a second type of xylem cell |
| Sieve tubes | Conducting strands of phloem |
| Cortex | Ground tissue surrounding outside vascular tissue |
| Root hairs | Slender projections of the cell membrane that greatly increase the surface area of a root and its ability to absorb water and nutrients |
| Root cap | Mass of cells that protects the actively growing root tip |
| Herbaceous plant | A plant with flexible stems that are usually green |
| Vascular bundles | Bundles of xylem and phloem that are in vascular plants |
| Pith | The ground tissue that is located inside the vascular bundles |
| Heartwood | The wood in the center of a mature stem or tree trunk where the xylem no longer conducts water |
| Sapwood | Lies outside the heartwood and contains vessels that conduct water |
| Petiole | Stalk that attaches the blade of the leaf to the stem |
| Mesophyll | The ground tissue in leaves that have cells that are packed with chloroplast |
| Transpiration | The loss of water vapor from a plant |
| Source | To refer to a part of a plant that provides organic compounds for other parts of the plant |
| Sink | To refer to a part of a plant that organic compounds are delivered to |
| Translocation | The movement of organic compounds within a plant from a source to a sink |