Plant Id University Summer 2011 Test 1 Part 2
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15 terms
Terms | Definitions |
|---|---|
 Vegetative body of Vascular plants consists of three organs (RSL) | 1. Roots, underground or above 2. Stems, aerial or subterranean 3. Leaves, photosynthetic, attached at nodes |
| Plant variation is in: | Size, shape, texture, structure |
| Life span (ABP) | Annual-life cycle in one growing season (yearly) Biennial-life cycle in2 growing seasons (2 years) Perennial-Lives more than 2 growing seasons |
| Plant Habit (HSShTSuV) | 1. Herb 2. Subshrub (suffrutescent-not completely woody) 3. Shrub 4. Tree 5. Succulent 6. Vine |
| Root types (TFASAP) | Tap-main central root Fibrous-no main root Adventitious- arise from leaf or stem tissues Aerial Prop roots (type of adventitious roots that supports the stem to ground) |
| Stem types (ARSBCT) | Aerial Rhizome stolon bulb corm tuber |
| Stem features | node internode axil bud axillary bud terminal bud bud scales bud scale scars stipule scars leaf scars lenticles |
| Leaf parts (BPS) | Leaf blade petiole stiules |
| Leaf complexity | 1. simple leaf 2. Compound leaf 3. leaflet 4. rachis 5. pinna 6. pinnule 7. petiolule |
| Compound leaf | 1. pinnately (odd, even) 2. palmately 3. bipinnately |
| Leaf attachment | 1. petiolate 2. sessile 3. subsessile 4. perfoliate 5. clasping 6. sheathing |
| Leaf arrangement | 1. basal 2. cauline 3. alternate 4. opposite 5. whorled |
| character variation | variation in structure makes possible for classification into groupings |
| Distinguishing inherited and induced variations (PIU) | Phenotypic variation- Inherited characteristics-most valuable to taxonomists Uniform Experimental Garden-technique used to determine the cause of a phenotypic variations |
| Difficulties determining usefulness of particular variables | 1. usefulness depends on the plant understudy 2. individual characteristics don't exist alone 3. variation among parts of single individual-due to indeterminate growth 4. taxonomists using plants part should use organs produces under similar growing conditions 5. vegetative reproduction-producing colonial populations 6. convergence and parallel evolution |
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