Classification Notes Classification Notes Taxonomy field of biology

Classification Notes

Classification Notes Taxonomy- field of biology that identifies and classifies organisms 1. Universal classification system 2. Analyze evolutionary relationships to categorize and name 3. Based on Carl Von Linne’s (Carl Linnaeus) system of groups called taxa A. The system is grouped broadest to smallest most specific traits I.

Classification Notes Domain Kingdom Phylum - (Plants substitute Division for Phylum) Class Order Family Genus Species

Classification Notes II. Naming 1. Common Name - many larger organisms have “common names” A. sometimes there is more than 1 common name for same organism – ex - blue crab could be – blue crab, lesser blue crab, red blue crab, ornate blue crab

Classification Notes B. sometimes same common name used for 2 or more distinctly different organisms ex – ferns, moss, shark

Classification Notes Scientific Name- Universal naming of every organism referred to as Binomial Nomenclature. (2 part name) A. Use- Genus species. 2. The genus is CAPITALIZED and the species is not. The name is italicized or underlined. Ex. Homo sapiens or Homo sapiens – Human Alces alces- Moose Bos taurus – Cow

Classification Notes 3 Domains- All organisms fit into one of them 1. Archaea 2. Eubacteria 3. Eukarya A. Kingdoms 1. Protista 2. Fungi 3. Plantae 4. Animalia III.

Examples

Classification Notes IV. Dichotomous Key - is a tool that allows the user to determine the identity of items in the natural world, such as and fish or sharks. Keys consist of a series of choices that lead the user to the correct name of a given item

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1 2 3 Alienus quadlegicus Alienus fuzzicus Alienus tritoothicus 4 5 6 Alienus blobicus Alienus stripicus Alienus hairicus