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Chapter 15-18: Classification of Organisms
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Taxonomy Classification & naming of life Carolus (Carl) Linnaeus –Binomial nomenclature
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Systematic Classification
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Phylogenetics
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The Kingdoms of Life Archaea EukaryaBacteria Archaea ProtistaBacteriaAnimaliaPlantaeFungi Before the creation of “domains” - 5 Kingdoms Now: - 3 Domains 6 Kingdoms ProtistaMoneraAnimaliaPlantaeFungi
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Review of Prokaryotes Includes Archaea and Bacteria Lack nucleus Majority of DNA = single large ring Reproduce via binary fission Posses cell wall different from plants
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Domain Bacteria Only a few bad apples Most abundant group of organisms
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-Extreme environment (i.e., salt lakes, acidic hot springs, deep-sea hydrothermal vents) -More closely related to eukaryotes Domain Archaea
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Prokaryotes help recycle chemicals and clean up the environment –Bioremediation Is the use of organisms to clean up pollution –Prokaryotes are decomposers in Sewage treatment and can clean up oil spills and toxic mine wastes Liquid wastes Outflow Rotating spray arm Rock bed coated with aerobic bacteria and fungi
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Domain Eukarya Kingdoms - Protista - Fungi - Plantae - Animalia
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Protista (Protists) First eukaryotes Most diverse kingdom Mostly unicellular Often grouped as: –Plant-like (algae) –Animal-like (protozoans) –Fungi-like (slime molds)
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…Protists Practical uses –Diatoms = comet and toothpaste –Algae in ice cream and cosmetics –Sushi
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Fungi Heterotrophic –Decomposers Chitin Cell Walls Multicellular Practical Uses –Penicillium –Yeast
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Lichen
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Plantae (Plants) = multicellular, autotrophic eukaryotes that contain cell walls made of cellulose –Usually Terrestrial –Sedentary –Indeterminate growth
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Bryophytes (nonvascular plants) Mosses, hornworts, and liverworts No vascular tissue –Small bodied Obtain water and nutrients through osmosis and diffusion H 2 O required for fertilization
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Vascular Tissue Function Xylem Phloem
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Seedless Vascular Plants Ferns and club mosses Vascular tissue present –Larger size H 2 O required for fertilization
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Seed Plants (Vascular) Dependent upon pollination Seed = embryo + food + protective coat –Dispersal –Dormancy –Germination –Nourishment Gymnosperms and Angiosperms
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Gymnosperms Conifers
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Angiosperms Most diverse and abundant plants Very efficient
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Animalia (animals) Multicellular heterotrophs with no cell wall Active Movement Diverse in form and habitat Reproduce sexually Unique embryonic development and tissues
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Kingdom Animalia Phlya: –Porifera –Cnidaria –Platyhelmenthes –Nematoda –Molluska –Annelida –Arthropoda –Echinodermata –Chordata
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Phylum Porifera Add sponge diagram & pics
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Phylum Cnidaria
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Radial Symmetry
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Cnidocytes
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Phylum Platyhelmenthes
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Bilateral Symmetry
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Body Cavities - Acoelomate
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Body Cavities - Pseudocoelomate
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Body Cavities - Coelomate
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Phylum Nematoda
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Phylum Molluska
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Mollusk Key Features
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Phylum Annelida
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Segmentation
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Phylum Arthropoda
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Arthropod Body Plan
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Phylum Echinodermata
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Phylum Chordata
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Vertebrates
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