Classification is the arrangement of organisms into orderly groups based on their physical similarities Classification is also known as taxonomy Taxonomists are scientists that identify & name organisms 2
What types of organisms can be classified? How are organisms classified? How is a dichotomous key used to classify an organism?
What’s this: A puma? A mountain lion? A cougar? A panther?
Developed by Carolus Linnaeus 2 word naming system; each species is assigned a two-part scientific name (Latin origin) Always written in italics First word Capitalized, second word lowercase: Genus species Genus = a group of closely related species Ex.: Brown Bear = Ursus arctos Polar Bear = Ursus maritimus Genusspecies
Domain = Eukarya (cells with nuclei) Kingdom = Animalia (animal) Phylum = Chordata (backbone) Class = Mammalia (hair, mammary glands) Order = Primates (can climb trees) Family = Hominidae (walk erect) Genus = Homo (man) Species = Sapiens (wise) Human scientific name = Homo sapiens Remember: Dumb King Phillip came over for grape soda!
So…Why Classify? TO give universal names to organisms TO organize organisms into groups TO find relationships between organisms