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Domain Eukarya

Domain Eukarya. Kingdom Animalia. Coelom?. Body cavity - space between digestive tract wall and body wall, surrounded by mesoderm cells, location of organs Phyla: Mollusca, Annelida, Arthropoda, Echinodermata, Chordata. Pseudocoelom?.

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Domain Eukarya

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  1. Domain Eukarya Kingdom Animalia

  2. Coelom? • Body cavity - space between digestive tract wall and body wall, surrounded by mesoderm cells, location of organs • Phyla: Mollusca, Annelida, Arthropoda, Echinodermata, Chordata

  3. Pseudocoelom? • Space around digestive cavity, not surrounded by mesoderm cells • Phylum Nematoda

  4. gut gut gut

  5. Symmetry • Balance or arrangement of parts • asymmetry- no symmetry • Porifera • radial- wheel plan • Porifera, Cnidaria, Echinoderm adults • bilateral- 2 sided • Echinoderm larva, Platyhelminthes, Arthropods, Annelids, Chordata

  6. Protostome? • Coelom develops from a solid mass of cells, blastopore becomes mouth • Mollusca, Annelida, Arthropoda Mouth

  7. Deuterostome? • Coelom forms from outgrowth of digestive tube, blastopore becomes anus • Echinodermata, Chordata Anus

  8. Domain Eukarya Kingdom Animalia

  9. Traits • Eukaryote • Multicellular • Heterotroph • No cell wall • Diploid except for gametes • Most internal digestion • Most zygotes with developmental stages

  10. Animals probably evolved from colonial protists

  11. Phylum Porifera • Traits • Radial or asymmetry • 3 layers of cells, no tissues or organs • No developmental stages or layers • Cellular digestion • Water dwelling • Examples: sponge

  12. Phylum Cnidaria • Traits: • Radial symmetry • Tissues (muscle, nerve) no organs • 2 developmental layers (endo & ectoderm) • No coelom • One opening • Tentacles with stinging cells • Water dwelling

  13. Phylum Cnidaria • Examples: coral, hydra, sea anemone, jellyfish

  14. Phylum Platyhelminthes • Traits: • Bilateral symmetry • Simple organs and systems • 3 developmental layers (endo, ecto, mesoderm) • No coelom • One opening • Examples: planaria, flukes, tapeworms

  15. tapeworm

  16. fluke

  17. Phylum Nematoda • Traits: • Bilateral • Organs and systems (no circulatory) • 3 developmental layers • Pseudocoelom • 2 openings • Examples: nematodes of soil & water, trichina parasites

  18. Phylum Mollusca • Traits: • Bilateral, 3 layers, 2 openings, coelom • Organs and systems (open circulatory) • Coelom (protostome) • Examples: snail, slug, oyster, octopus, clam

  19. Phylum Annelida • Traits: • Bilateral, 3 layers, 2 openings, coelom • Systems (closed circ) • Segments • Coelom (protostome) • Examples: earthworms, sandworms, leeches

  20. Phylum Arthropoda • Traits: • Bilateral, 3 layers, 2 openings • Coelom (protostome) • Exoskeleton of chitin • Jointed appendages • Examples: spider, insect, lobster, scorpion, tick

  21. Phylum Arthropoda • 5 classes: • Horseshoe crabs • Arachnids (spiders) • Crustaceans (lobsters, crabs) • Millipedes and centipedes • Insects (grasshoppers, bees, butterflies, ants, mosquitoes)

  22. Phylum Echinodermata • Traits: • Bilateral larvae, radial adults • 3 layers, 2 openings • Coelom (deuterostome) • Endoskeleton • Water vascular system, marine • Examples: starfish, sea urchin, sea cucumber

  23. Phylum Chordata • Traits: • Bilateral, 3 layers, 2 openings • Coelom (deuterostome) • Dorsal, hollow nerve cord • Notochord (cartilage rod in back) • Gill structures • Post-anal tail • Invertebrate examples: tunicates, lancelets

  24. tunicate

  25. Lancelet

  26. Classes Vertebrate chordates • Agnatha- Jawless fish- lamprey

  27. Classes Vertebrate chordates • Chondrichthyes- cartilage fish, gill slits, no scales- sharks, rays

  28. Ray

  29. Classes Vertebrate chordates • Osteichthyes- bony fish, scales, operculum- tuna, trout, koi

  30. Classes Vertebrate chordates • Amphibian- no hard shell on eggs, moist skin, reproduce in water- frogs, toads, salamanders

  31. Classes Vertebrate chordates • Reptilia- shelled (amniotic) egg, cold blooded (ectothermic), scales-lizards, snakes, alligators, turtles

  32. Classes Vertebrate chordates • Aves- shelled amniotic egg, warm blooded (endothermic), scales & feathers • birds of all kinds

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