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Domain Bacteria

Domain Bacteria. Domain Archaea. Domain Eukarya. Common ancestor. Kingdom: Animals. Complex Eukaryotes. Animal Characteristics . Heterotrophs must ingest others for nutrients Multicellular complex bodies No cell walls allows active movement Sexual reproduction. Animal Evolution.

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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 • Heterotrophs • must ingest others for nutrients • Multicellular • complex bodies • No cell walls • allows active movement • Sexual reproduction

  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: Porifera • Sponges • have pores all over body • no organized tissues or organs

  5. Invertebrate: Porifera food taken into each cell separately • have spicules for support • sessile • most live in ocean, few freshwater • filter Feeders • reproduction (asexual/sexual) • Budding • Fragmentation • Reconstruction • Hermaphrodites

  6. Invertebrate: Cnidarian • Stinging-celled animals • Jellyfish, hydra, sea anemone, coral • tissues, but no organs • two cell layers • predators • tentacles surround mouth opening • digested material absorbed into cells

  7. Invertebrate: Cnidarian • Have nematocysts = stinging cells for capturing/poisoning prey.

  8. Invertebrate: Platyhelminthes • Flatworms • tapeworm, planaria • mostly parasitic • digestive tube • One opening for taking in/eliminating waste • hermaphrodites • Asexual/sexual tapeworm

  9. Invertebrate: Nematoda • Roundworms • Ascaris, hookworms, pinworms • round with pointed ends • digestive tube • have separate mouth & anus • many are parasitic

  10. Invertebrate: Annelida • Segmented worms • earthworms, leeches • segments are all the same • digestive tube – coelom (enclosed tract) • hermaphrodites fan worm leech

  11. Invertebrate: Annelida • Circulatory System • Closed Circulatory System • Blood • Blood Vessels • 5 hearts

  12. Invertebrate: Molluska • Soft-bodied Animal • clams, snails, squid, octopus • soft bodies, mostly protected by hard shells • digestive tube (coelom) • muscular foot for movement

  13. Invertebrate: Molluska • Soft-bodied Animal • mantle = thin membrane that surrounds the internal organs. • 3 Classes of Mollusks • Gastropods – one shelled mollusks • snails, slugs, sea slugs • radula – tongue like organ used to scrape or cut food • open circulatory system = blood not bound to blood vessels

  14. Invertebrate: Molluska • Bivalves – two-shelled mollusks • clams, oysters, and scallops • no distinct head or radula • filter feeders • Cephalopods – head-footed mollusks • octopus, squids, cuttlefish, chambered nautilus • tenticles • radula and sharp jaws present • closed circulatory system

  15. Invertebrate: Echindermata • starfish, sea urchins, sea cucumber • spiny exoskeleton • only salt water • water vascular system • tubed feet

  16. Invertebrate: Arthropods • Jointed-Legged Animals • spiders, insects, crustaceans • most successful animal group • segmented • allows jointed legs & arms • exoskeleton

  17. 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

  18. Vertebrates • Vertebrates • fish, amphibians, reptiles, birds, mammals • internal bony skeleton • backbone • skull-encased brain becomes brain & spinal cord Oh, look…your firstbaby picture! becomes gills or Eustachian tube becomes tail or tailbone becomes vertebrae

  19. 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

  20. 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)

  21. 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

  22. 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

  23. 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

  24. That’s the buzz… AnyQuestions?

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