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Animal_diversity_I_Lect_2

Animal_diversity_I_Lect_2 - Chris Brey Ph.D Assistant...

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1 Chris Brey, Ph.D. Assistant Professor Division of Life Sciences Department of Entomology 212 Blake Hall 932-9590 [email protected] Blake Hall rm 212 Office hrs 1- 3 Tues. Classification Systematics Taxonomy Phylogeny Systematics Diversity of organisms Evolutionary relationships Biodiversity Variety Ecosystems
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2 Taxonomic categories Kingdom Phylum Class Order Family Genus Species Taxonomic Categories Felis catus Domestic cat Fig. 22.1 Monophyletic group: Includes an ancestral species and all of its descendents Paraphyletic group: A group that contains a common ancestor and some but not all of its descendents Polyphyletic group: Consists of several evolutionary lines that do not share the same recent common ancestor Ex. Protista Phylogeny
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3 Six Kingdoms Fig. 22.3 What type of taxonomic grouping are ? Mammals: Protista: Reptilia: Monophyletic Polyphyletic Paraphyletic Kingdom Protista Protozoa: “Animal-like” Amoebas Foraminiferans Radiolarians Flagellates Ciliates Apicomplexans
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4 Pseudopodia Figure 24.22 100 μm Green alga Pseudopodia Amoebas Change shape - movement - phagocytosis Reproduce by binary fission Some form shells (tests) Protozoan Parasitic Amoebas Protozoan Human intestinal disease Entamoeba histolytica Cyst stage Contaminated drinking water
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  • Spring '08
  • trans
  • Cnidaria, gastrovascular cavity, body plan, Phylum Cnidaria, Bilateral symmetrical animals, polyp Polyp colony

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Animal_diversity_I_Lect_2 - Chris Brey Ph.D Assistant...

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