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Domain Bacteria

Domain Bacteria. Domain Archaea. Domain Eukarya. Common ancestor. Kingdom: Animals. Complex Eukaryotes. Animal Characteristics . __________________________ must ingest others for nutrients __________________________ complex bodies __________________________ allows active movement

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Domain Bacteria

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  1. Domain Bacteria Domain Archaea Domain Eukarya Common ancestor Kingdom: Animals Complex Eukaryotes

  2. Animal Characteristics • __________________________ • must ingest others for nutrients • __________________________ • complex bodies • __________________________ • allows active movement • __________________________

  3. Animal Evolution sponges jellyfish flatworms roundworms mollusks segmentedworms insectsspiders starfish vertebrates internal skeleton segmented body separate digestive system left-right symmetry tissues many-celled Ancestral Protist

  4. Invertebrate: Sponges food taken into each cell separately • __________________________ • no organized tissues or organs • food goes in & waste comes out same opening

  5. Invertebrate: Jellyfish • __________________________ • tissues, but no organs • two cell layers • predators • tentacles surround mouth opening • digested material absorbed into cells

  6. Invertebrate: Flatworms • __________________________ • tapeworm, planaria • mostly parasitic • digestive tube • now have separate mouth & anus tapeworm

  7. Invertebrate: Roundworms • __________________________ • digestive tube • have separate mouth & anus • many are parasitic • hookworm

  8. Invertebrate: Mollusks • __________________________ • clams, snails, squid • soft bodies, mostly protected by hard shells • digestive tube

  9. Invertebrate: Segmented worms • __________________________ • earthworms, leeches • segments are all the same • digestive tube fan worm leech

  10. Invertebrate: Arthropods • __________________________ • most successful animal group • segmented • allows jointed legs & arms • exoskeleton

  11. Arthropod groups arachnids 8 legs, 2 body parts spiders, ticks, scorpions crustaceans gills, 2 pairs antennae crab, lobster, barnacles, shrmp insects 6 legs, 3 body parts

  12. Invertebrate: Starfish • __________________________ • radial symmetry • spiny exoskeleton

  13. Vertebrates • __________________________ • ____________________________________ • ____________________________________ • backbone • skull-encased brain becomes brain & spinal cord Oh, look…your firstbaby picture! becomes gills or Eustachian tube becomes tail or tailbone becomes vertebrae

  14. 450 mya salmon, trout, sharks Vertebrates: Fish • Characteristics • body structure • bony skeleton • jaws & paired fins • scales • body function • breathe with gills • two-chambered heart • cold-blooded • reproduction • external fertilization • external development in aquatic egg gills body

  15. lung buccal cavity glottis closed 350 mya frogs salamanders toads Vertebrates: Amphibian • Characteristics • body structure • legs (walk on land) • moist skin • body function • breathe with lungs & through skin • three-chambered heart • cold-blooded • reproduction • external fertilization • external development in aquatic egg • metamorphosis (tadpole to adult)

  16. leathery shell embryo amnion chorion allantois yolk sac 250 mya dinosaurs, turtles lizards, snakes alligators, crocodile Vertebrates: Reptiles • Characteristics • body structure • dry skin, scales, armor (shells) • body function • breathe with lungs • three-chambered heart • cold-blooded • reproduction • internal fertilization • external development in hard-shelled egg

  17. lung trachea anterior air sacs posterior air sacs 150 mya finches, hawk ostrich, turkey Vertebrates: Birds • Characteristics • body structure • feathers & wings • thin, hollow bone;flight skeleton • body function • very efficient lungs & air sacs • four-chambered heart • warm-blooded • reproduction • internal fertilization • external development in hard-shelled egg

  18. muscles contract diaphragm contracts 220 mya / 65 mya mice, ferret elephants, batswhales, humans Vertebrates: Mammals • Characteristics • body structure • hair • specialized teeth • body function • breathe with lungs, diaphragm • four-chambered heart • warm-blooded • reproduction • internal fertilization • internal development in uterus • nourishment through placenta • birth live young • mammary glands make milk

  19. That’s the buzz… AnyQuestions?

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