1. Wake-up 1.Write down three characteristics of worms. 2.Write down two different types of worms.

2. Worms

3. Flatworms

4. Skeletal system: Hydrostatic

5. Digestive system: Two way

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7. Respiratory system: Diffusion

8. Nervous system: Nerve Cell Ganglia (control center) with 2 nerve cords Eyespots

9. Reproductive system: Hermaphrodite; both sexes present for internal fertilization

10. Reproductive system: Fragmentation

11. Planarian

12. Marine Flatworms

16. Tapeworm

18. *

19. *

21. Liver Fluke

26. Nematoda - Roundworms

27. Skeletal system: Hydrostatic

28. Digestive system: One way

29. Respiratory system: Diffusion

30. Nervous system: Nerve Cell Ganglia (control center) with 2 nerve cords Eyespots

31. Reproductive system: Internal fertilization

36. Hookworms

40. *

44. Annelida – Segmented Worms

45. Symmetry Bilateral: Can be split evenly into two halves

46. Skeletal Hydrostatic skeleton: “Water” skeleton Water

47. Digestion One-way: Food moves into mouth and out an anus

48. Circulatory Closed system: Blood is within vessels; have 5 “hearts”

49. Respiratory Diffusion: absorb oxygen through the skin; skin has to be moist O2O2 O2O2

50. Nervous Nerve cell: Control center; nerve cord

51. Reproduction Hermaphrodite –Both sexes present; both worms fertilize each other eggs

52. Special Characteristics Has small spines called SETAE on their outer most layer; helps anchor them to soil grains.

53. Example: Earthworm

54. Niche: Recycles organic matter; creates healthy soil

55. Example: Leech

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