14 Why Classify?Use to name organisms and group them in a logical manner.TaxonomyThe branch of biology concerned with the grouping and naming of organisms
15 Assigning Scientific Names Why common names are confusing.Felis concolor has 4 common namesMountain lion, a puma, a cougar, or a pantherA common name can refer to 2 different species: example is buzzard – in the UK it refers to a hawk and in most of the US it refers to a vulture
16 Binomial nomenclature Developed by LinnaeusTwo-word system to name organismsAre always in Latin and Must be italicized or underlinedThe first word (genus) is capitalized but the second word (descriptive term) is lowercaseTurdus migratorius (American Robin)
17 Linnaeus’s System of Classification Taxon – each level within a naming system.(commonly memorized from largest to smallest)King Philip Came Over For Granny’s Spaghetti
25 Dichotomous KeyIs a set of paired statements that can be used to identify organismsYou choose one statement from each pair that best describes the organismAt the end you will identify the name or what group the organism belongs to
36 The Tree of Life Evolves The six-kingdom system of classification includes the kingdoms Eubacteria, Archaebacteria, Protista, Fungi, Plantae, and Animalia
37 The Three-Domain System Domain – a more inclusive category than any other – larger than a kingdomThe 3 domains are:Eukarya (include protists, fungi, plants, and animals)Bacteria (corresponds to Eubacteria)Archaea (corresponds to Archaebacteria)
38 Essential QuestionsWhat are two differences between plants and animals?How does fungi get its nutrients?What does non-motile mean?
39 Warm Up What is an ecological footprint? What happened during the industrial revolution?Give an example of mutualism.
40 Domain Bacteria Corresponds to the kingdom Eubacteria Contains all unicellular, prokaryotic cellsHave thick, rigid cell wallsEither heterotroph or autotrophSome need oxygen while others are killed by oxygenExample: Strepococcus, Escherichia coli
41 Domain Archaea Corresponds to kingdom Archaebacteria Contain all prokaryotic cellsLive in some of the most extreme environmentsVolcanic hot springs, brine pools, black organic mud devoid of oxygenMost can survive only in the absence of oxygenExamples: Methanogens, halophiles
42 Domain Eukarya Consist of all organisms that have a nucleus Organized into 4 kingdomsProtista, Fungi, Plantae, and Animalia
43 Protista Members display the greatest variety Most are unicellular but some are multicellularEither autotroph or heterotrophExamples:Amoeba, paramecium, giant kelp
45 Fungi A unicellular or multicellular heterotrophic eukaryote Absorbs nutrients obtained by decomposing dead organisms and wastes in the environmentExamples:Mushrooms, which are multicellularYeasts, which are unicellular
47 Plantae Multicellular organisms that are photosynthetic autotrophs Nonmotile – cannot move from place to placeContain cell wallsIncludes cone-bearing and flowering plants, as well as mosses and ferns
49 AnimaliaMulticellular consumers that eat and digest other organisms for foodAnimal cells have no cell wallMost are motile for at least some part of their life cycleIncredible amount of diversitySponges, worms, insects, fish, mammalsMany exist in nearly every part of the planet