1. animal
a living organism that is eukaryotic and multicellular, has organized tissues, and must obtain food rather than making it by photosynthesis

2. Living Organisms
have life spans
can reproduce
grow
are made of cells

3. eukaryotic cells
have a nucleus and have membrane-bound organelles

4. Kingdom Animalia in
invertebrates
vertebrate
vertebrates no
backbone

5. Invertebrate Skeletons
internal
external

6. Phylum Porifera
Por
pore

7. Phylum Porifera sessile does not move about
is permanently attached to a solid object

8. pore cells
sponge

9. collar cells
sponge

10. filter feeders
sponge

11. sponge

12. amoeba-like cell
sponge

13. spongin
sponge

14. spicule
sponge

15. Phylum Cnidaria

16. Phylum Cnidaria
hydras
sea anemones
coral
jellyfish

17. Phylum Cnidaria
large central cavity surrounded by two tissue layers

18. ectoderm
endoderm

19. hydro
hydrostatic
static
water
standing

21. gastrovascular cavity
mouth

22. Phylum Cnidaria large central cavity surrounded by two tissue layers
tentacles with stinging cells

23. nematocyst
stinging cell

24. Phylum Cnidaria large central cavity surrounded by two tissue layers
tentacles with stinging cells
digest food in gastrovascular cavity

26. bilateral symmetry
radial symmetry
radial symmetry

27. Phylum Cnidaria large central cavity tentacles with stinging cells
digest food in gastrovascular cavity
radial symmetry

28. Phylum Cnidaria
umbrella shaped
tube-like

29. radial symmetry

30. calcium carbonate base
tentacles
coral polyp
mouth
calcium carbonate base

31. Phylum Platyhelmenthes

32. Flatworms free-living parasitic does not depend on a host
obtains nourishment from and harms another organism

33. Nervous System Planarians neurons long, thin nerve cells
found throughout body
carry impulses from one point to another

34. Nervous System Planarians nerve
collection of neurons wrapped in protective coverings

35. longitudinal nerves
transverse nerves

36. Nervous System
Planarians
ganglion
coordination center
simple brain

37. Nervous System Planarians stimulus/stimuli
something a planarian can sense

38. eyespots

39. pharynx

40. Digestive System
Planarians
long branched cavity

41. Digestive System Planarians lined with gastroderm
secretes enzymes to digest food
absorbs semi-digested material

42. flame cells
excretory pores

43. Phylum Nematoda round, tube-like bodies tapered at each end
some are parasites
some are free-living
some are microscopic

44. Phylum Nematoda
hookworm
pinworm
trichina worm
guinea worm

45. Phylum Annelida
segmented body

46. epidermis

47. epidermis exchanges gases secretes thin outer coating cuticle
protects from harmful parasites and substances

48. muscle layers
provide support
help the worm move

49. circular muscles
long muscles

50. sensory receptor
a structure that can sense a stimulus and then start an impulse along a neuron

51. sensory receptors
neurons that send impulses to the ganglia

52. nerve cord
a bundle of neurons

53. nerve cord
large ganglion
small ganglia

54. ganglion
interprets
decides

55. impulse
sensory receptors
neurons
ganglia

56. ganglia
other neurons
muscles
bristles

57. closed circulatory system
blood never leaves the blood vessels

58. dorsal blood vessel
aortic arches

59. aortic arches
help control blood pressure
five pair

60. ventral blood vessel

61. capillaries thin walls exchange of substances arteries—away
veins—toward

62. mouth
upper lip helps force food in

63. pharynx muscle contractions help pull food in
secretion of liquids for lubrication

64. esophagus
tubelike passageway
carries food from pharynx to crop

65. crop
temporary storage chamber for food

66. crop

67. gizzard
mechanical digestion

68. intestine
chemical digestion
folded ridges for absorption

69. anus
castings

70. nephridia/ excretory tubules
tiny looped tubes
waste is passed out through pores

71. nephridia

72. epidermis Oxygen enters the skin and is absorbed by capillaries.
CO2 passes out of capillaries through the skin.