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Opening Activity

Opening Activity. Identify which era the following species might be first found in: 1) Single-celled pond scum 2) Lizard 3) Jellyfish 4) Pine tree 5) Bird 6) Sponge 7) Mammal 8) Flowering plant. DECEMBER 13TH , 2010. Classification. Speciation.

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Opening Activity

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  1. Opening Activity Identify which era the following species might be first found in: 1) Single-celled pond scum 2) Lizard 3) Jellyfish 4) Pine tree 5) Bird 6) Sponge 7) Mammal 8) Flowering plant

  2. DECEMBER 13TH, 2010 Classification

  3. Speciation Speciation requires geographic isolation. Otherwise, genes keep mixing and differences don’t get bigger. Geographic isolation: Different continents Rivers, canyons, or mountains inbetween Significantly different environments

  4. Speciation vs. Genetic Drift Geographic isolation Two species are different when: They cannot mate or Their offspring are strongly selected against, limiting the number of hybrids.

  5. Classification Scientists used to categorize and name species on the basis of visible similarities and differences. Now they also include DNA mapping and other less obvious features. Linnaeus is the scientist who created the naming system. Each species gets two Latin names. Ex: Homo sapien Canis lupus

  6. Classification System Big Domain Kingdom Phylum Class Order Family Genus Species Kings Play Chess On Fine Gold Silk Small

  7. Branching Tree Diagrams Zoology, cladistics, and phylogeny are all types of science that deal with categorizing species. They use a branching tree diagram to show divergence from a common ancestor. Which species are contemporary (modern)? 2) Which two species are the most different? 3) Which species is a common ancestor of both C and D? 4) Which direction is forward in time? 5) Under what conditions might have species B diverged into two different species? A B C D E

  8. Prokaryotes Archaea Halophile Eukaryote Domain: Bacteria E. Coli Kingdom: Protist Amoeba Fungi Plant Animal Bryophyte (Non-Vascular) Moss Tracheophytes (Vascular) Club Mushroom Chordate (Vertebrate) Phylum: Sac Yeast Zygote Mold Class: Seedless Fern Gymnosperm Pine tree Angiosperm Ectotherm Endotherm Sub-Class or Order: Monocot Wheat Dicot Rose Invertebrate Porifora Sponges Jawless Fish Lamprey Amphibians Birds Cnidarians Jellyfish Reptiles Mammals Cartilaginous Fish Shark Mollusks Flatworms Tapeworm Bony Fish Salmon Monotremes Platypus Echinoderms Starfish Crocodiles & Alligators Roundworms Heartworm Salamanders Arthropods Marsupial Kangaroo Frogs & Toads Lizards Segmented Worms Earthworm Snakes Placental Human Gastropods Snails Bivalves Clams Cephalopods Octopi Crustaceans Crawfish Arachnids Tarantula Insects Beetles Centipedes & Millipedes Turtles

  9. Homework Ch. 7.3  7.5 Short Notes Attempt your science fair project and either identify and solve a problem or if it all works, gather your first trial’s worth of data.

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