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Kingdoms/Taxonomy
7th Texas
| Question | Answer |
|---|---|
| taxonomy | the science of classifying living things |
| hierarchical classification system | a category that unites groups in the level below it based on shared properties |
| binomial nomenclature | refers to two names given to an organism (example: Homo sapiens) |
| Archae | ancient, unicellular prokaryotic organisms; some are chemosynthetic |
| Bacteria | unicellular prokaryotic organisms; some are helpful and some cause disease |
| Protista | unicellular eukaryotic organisms that move around in water; some are autotrophs, some are heterotrophs |
| Fungi | multi-cellular non-motile organisms with a cell wall made of chitin; all are heterotrophic |
| Plantae | multicellular, non-motile photosynthetic autotrophs; their cells have a cell wall & contain chloroplasts |
| Animalia | multicellular, motile heterotrophs; cell do NOT have a cell wall |
| kingdom | all living organisms on Earth fit into one of these six - |
| phylum | subdivision of a kingdom, grouping together all classes of organisms that have the same body plan |
| class | subdivision of a phylum consisting of several orders |
| order | subdivision of a class consisting of several families |
| family | subdivision of an order consisting of several subdivision of a class or subclass in the classification of organisms, consisting of several genera |
| genus | subdivision of a family consisting of more than one species |
| species | subdivision of a genus composed of related individuals that resemble one another, are able to breed among themselves, but are not able to breed with members of another species |
| dichotomous key | a key used to identify an organism in which each stage presents descriptions of two distinguishing characters, with a direction to another stage in the key, until the species is identified |
| heterotroph | "other" feeder; feeds on others |
| autotroph | "self" feeder; produces own food |
| chemosynthetic | makes own food using energy from chemicals |
| photosynthetic | makes own food using energy from sunlight |
| prokaryote | single-celled organism that does NOT contain a nucleus |
| eukaryote | a cell that contains a nucleus |