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MsRClass/Taxon
Classification/Taxonomy Vocab
| Term | Definition |
|---|---|
| taxonomy | the system of classifying different living things |
| Carolus Linnaeus | Created the modern system of classification |
| taxon | One of the units in the hierarchy of taxonomy |
| kingdom | The second highest level of classification; there are 5 of these large divisions |
| phylum | smaller than a kingdom; there are 9 major ones |
| class | A unit of division that contains various orders |
| order | more specific rank than class; contains more than one similar families |
| family | includes various genus' |
| genus | a group of similar species |
| species | the lowest and least inclusive level of taxonomic hierarchy |
| binomial nomenclature | a two-part naming system |
| Porifera | Name means "pore bearer" Have specialized cells but no tissues, asymmetry. Ex: sponges |
| Cnidaria | Have radial symmetry, true tissues, includes jellyfish, sea anemones |
| Platyhelminthes | Name means "flat" . Cephalization, bilateral symmetry, mesoderm, complete digestive system. Ex: flatworms, tapeworms, flukes |
| Nematoda | Has pseudocoelom, complete digestive system. Ex: roundworm |
| Mollusca | Name means "soft body:, includes squids, snails, and clams |
| Annelida | Has a segmented body, primitive brain. Includes earthworms & leeches |
| Chordates | Have spinal cord, includes mammals, reptiles, and birds |
| Arthropods | Name means "jointed legs", includes all insects, spiders, crustaceans |
| Echinodermata | Name means "spiny skinned"-Complete digestive system, coelom, Includes sea stars, sand dollars, sea cucumbers |