2BiodiversityBiodiversity – the variety of organisms considered at all levels from populations to ecosystems.
3TaxonomyTaxonomy – the science of describing, naming, and classifying particular organisms.Taxon – a particular group within the taxonomic system.
4The Linnaean System Developed by naturalist Carolus Linaeus Grouped organisms according to their form and structure (morphology)Organisms are grouped by similarities.
5Levels of Classification DomainKingdomPhylumClassOrderFamilyGenusSpecies
6King Philip Came Over For Good Soup I H L R A E PN Y A D M N EG L S E I U CD U S R L S IO M Y EM S
7Nomenclature Each species has a scientific name Binomial nomenclature – a two part nameGenusSpeciesNames come from Greek and LatinWritten in italicsGenus (first letter capitalized) species (lowercase)Examples:Homo sapiensE. coli
8SystematicsPhylogenetics – the analysis of evolutionary or ancestral relationships among taxaCladistics – a system of phylogenetic analysis that uses shared and derived characters for grouping taxa
9Shared character – a feature that all members of the group have in common Derived character – a feature that evolved only within the group under considerationClade – the group of organisms that includes an ancestor plus all of its descendants
11Domains Bacteria Archaea Eukarya Small, single-celled prokaryotes Cell walls, no nucleusArchaeaProkaryotesLive in extreme environmentsEukaryaEukaryotic organisms, have a nucleusComplex, multicellular organisms
126 Kingdoms The next level of organization is Kingdoms There are 6 KingdomsEubacteriaArchaebacteriaAnimaliaPlantaeFungiProtista
17Warm-up What is taxonomy? Why bother to classify organisms? What is the purpose of a scientific name?What two taxa make up an organisms scientific name? How is this scientific name correctly written?Write these scientific names correctly:mola molahomo sapianstyrannosaurus rex