2. ANIMAL EVOLUTION

4. What is an animal? Eukaryotic Multicellular Heterotrophic Organized

5. What is

7. Animal Invertebrates Eukaryotes Multicellular Heterotrophic No Vertebrate Backbone Central Notocord

8. Invertebrate Animals

10. Tied to the water! Living in the water is EASY!

11. What do all animals require to survive? Water Oxygen Food Ability to reproduce

12. No Symmetry, 2 cell layers (endoderm, ectoderm)

13. SPONGES

14. How do they get food? Oxygen? Reproduce?

15. TISSUE LAYERS

20. PHYLUM: Cnidaria No true tissue Marine ex. Jellyfish, hydra, coral, sea anemone

21. Nerve Net Tentacles with stinging cells

22. Still tied to the water! Radial Symmetry 2 cell layers (endoderm, ectoderm)

23. Corals

24. Sea Anenomes

25. Symbiotic Relationships

26. BRAIN CORAL

27. PHYLUM: Echinodermata Means: Spiny Skin Radial Symmetry Sexual and Asexual Seastar, sea urchin, sand dollar

28. Sea Urchins & Sand Dollars How do they get food? Oxygen? Reproduce?

29. Bilateral 3 cell layers (endoderm, mesoderm, ectoderm) Getting larger! Still in the water!

30. Becoming Bilateral! Cephalization

32. PHYLUM: Mollusca Calcium carbonate shell Soft body: mantle ex. Snails, clams, oysters

33. How do they get food? Oxygen? Reproduce?

35. PHYLUM: Nematoda Roundworm Symmetrical Notocord One-way digestive system

36. ex. Ringworm, heartworm

37. Hookworm parasites

38. PHYLUM: Annelida Segmented worm One-way digestive tract ex. Earthworm, leeches

39. How do they get food? Oxygen? Reproduce?

40. PHYLUM: Platyhelminthes Plat=Flat Flatworms Aquatic or semi-aquatic bilateral

41. Tapeworms

42. PHYLUM: Arthropoda Body Segments Exoskeleton made of what? Chitin=carbo Jointed appendages

44. CLASS: Insecta PHYLUM: Arthropoda 6 legs 3 body segments wings ex. Bee, grasshopper How do they get food? Oxygen? Reproduce?

45. CLASS: Arachnida PHYLUM: Arthropoda 8 legs (4 pairs) 2 body segments No antennae ex. Spiders, ticks, mites, scorpions

47. CLASS: Crusteacean PHYLUM: Arthropoda Breath through gills 2 pair of anntenae 2 body segments, 5 pairs legs mostly marine ex. Shrimp, lobster, pillbug

48. PHYLUM: Chordata Has a notochord at some stage of development (cartilage) Dorsal nerve cord Ventral heart

49. All vertebrates are chordates. NOT all chordates are vertebrates. Diffusion PHYLUM: Chordata

50. Finally, moving to land?

51. Phylum: Chordata Subphylum: Vertebrate Notochord replaced by vertebrate backbone in embryo Specialized muscle system Internal skeleton CNS w/ brain Appendages for locomotion

52. 3 Classes of Fish Phylum:Chordata, Subphylum:Vertebrate Fins Ectotherms: body temp. according to environment LAND HO! WELL, NO LAND YET!!!! How do they get food? Oxygen?

53. Subphylum: Agnatha Jawless Fish Sucker mouth No scales; slimy skin Gills not covered Cartilage skeleton Ex. Lamprey & hagfish

54. Subphylum: Chondrichthyes Cartilage fish Sharks, rays & skates Tooth-like scales Hinged jaw Gills not covered

55. Subphylum: Osteichthyes Bony fish Eel, salmon, trout Hinged jaw Flat scales Covered gills

56. Reproduce? External Fertilization External Development

57. LAND HO! NOW!!!!

58. Problems with living on land! Reproduction Gas exhange Gravity Movement Dessication Temperature (winter) Transporting nutrients throughout body

62. Class: Amphibian Immature:gills Adult: lungs Thin moist skin

64. Reproduction? External Fertilization External Development

65. Class: Reptiles Dry scaly skin Ectotherm Lungs Internal Fertilization Extenal Development

66. METAMORPHOSISMETAMORPHOSIS

67. Reptiles Internal Fertilization External Development

69. Endo/ecto-therm

70. Class: Aves Birds Scales on legs Endotherms Feathers for insulation Thin bones Lungs Internal Fertilization External Development

72. Class: Mammals Care for young Feed milk Endotherms Hair or fur Lungs Developed brain Internal Fertilization & Development

75. http://www.msnbc.msn.com/id/121682 65/http://www.msnbc.msn.com/id/121682 65/ http://blogs.discovermagazine.com/80b eats/2010/01/06/fossil-footprints-show- animals-adventured-onto-land-earlier- than-thought /