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Science Chapt. 17
Term | Definition |
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Aristotle's System | developed the first widely accepted system of biological classification; all organisms known into two groups: plants and animals. Subdivided in three groups: herbs, shrubs, and trees depending on the size and structure of the plant. |
Classification | grouping of objects or information based on similarities |
Taxonomy | branch of biology that groups and names organisms based on studies of their different characteristics |
Linnaeus's System | developed a method of grouping organisms that is still used by scientist today; based on physical and structural similarities of organisms |
Binomial Nomenclature | modern classification systems used a two-word naming system |
Genus | consist of a group of similar species |
Specific Epithet | second word which sometimes describes a characteristic |
Family | the next larger taxon in the biological classification system, consist of a group of similar genera. |
Order | taxon similar famlies |
Class | a taxon similar orders |
Phylum | a taxon of similar classes |
Division | plant taxonomists use this instead of using phylum |
Kingdom | taxon similar phyla or divisions |
Archaebacteria | prokaryotic and live in harsh environments such as deep sea vents and hot springs |
Phylogeny | evolutionary history of a species |
Cladistics | one biological system of classification that is based on phylogeny |
Cladogram | groups derived traits and use them to make a branching diagram |
Eubacteria | very strong cell walls and a less complex genetic makeup than found in archaebacteria |
Protist | Eukaryota that lacks complex organ systems and lives in moist environments |
Fungus | is either a unicellular or multi cellular Eukaryota that absorbs nutrients from organic materials from the environment |
Prokaryote | microscopic unicellular organisms that lack distinct nuclei bounded by a membrane |
Eukaryote | unicellular or multi cellular organisms such as yeast, plants, and animals composed Eukaryota cells, which contain a true nucleus and membrane-bound organelles |
Plants | multi cellular oxygen producers |
Animals | multi cellular heterotrophs |
Dichotomous Key |