1. Kingdom Animalia The study of animals is called Zoology

5. Human Life Cycle n 2n

13. The Embryonic Germ Layers develop from the Blastula….. Gastrula Hollow ball of cells stage following the blastula, consisting of a hollow, two-layered sac of ectoderm and endoderm surrounding an archenteron (opening) archenteron Gastrula

15. 2. Body Symmetry There’s 3 basis shapes…1. asymmetry, 2. radial and 3. Bilateral symmetry

19. Sponges Sea Anemone Humans

24. Flatworms are Acoelomates

26. Roundworms are Pseudocoelomates

27. The body cavity of a coelomate animal (called a coelom ) is located within the mesoderm. The mesentery holds the gut in place. Digestive cavity Coelom Mesoderm

28. Earthworms are Coelomates

30. 7. Body Plans Protostomes or Dueterostomes?

34. ( Blastopore becomes the anus) ( Blastopore becomes the mouth) Blastopore Blastopore

39. Evolutionary Trends (sponges) (jellyfish, hydra) (flatworms) (roundworms) (rotifers) (clams, snails) (earthworms) (insects, spiders) (starfish, sea urchins) (common name) Phylum Tissue Complexity Germ Layers Body Symmetry Gut Openings Coelom Embryonic Development Porifera parazoa - asymmetry 0 - - Cnidaria eumetazoa 2 Radial symmetry 1 - - Platyhelminthes eumetazoa 3 Bilateral Symmetry 1 acoelomate - Nematoda eumetazoa 3 Bilateral Symmetry 2 pseudo- coelomate - Rotifera eumetazoa 3 Bilateral Symmetry 2 pseudo- coelomate - Mollusca eumetazoa 3 Bilateral Symmetry 2 coelomate protostome Annelida eumetazoa 3 Bilateral Symmetry 2 coelomate protostome Arthropoda eumetazoa 3 Bilateral Symmetry 2 coelomate protostome Echinodermata eumetazoa 3 Radial Symmetry 2 coelomate deuterostome Chordata eumetazoa 3 Bilateral Symmetry 2 coelomate deuterostome

41. Kingdom Animalia Survey

42. 1. Phylum Porifera (Sponges)

43. Phylum Porifera (Sponges) (exit for water) (digest and distribute food) (skeleton) Choanaocyte *** Sponges are Parazoans: they contain NO true tissues *** Sponges are filter feeders

44. 2. Phylum Cnidaria Jellyfish, Corals, and other Stingers

47. The Tissue Layers Inner tissue layer (endoderm): gastrodermis Outer tissue layer (ectoderm): epidermis -contains cnidocysts, the stinging cells Middle layer (lacks a mesoderm): mesoglea (jelly-like substance)

49. Planaria

50. Tapeworm Scolex (head) Young Proglottids Old Proglottids ** tapeworms appear to be segmented, but they are not true “segmented” worms

52. Nematode

54. Rotifer

56. Snails

58. Phylum Annelid (Segmented Worms: includes leeches, earthworms and polychaetes) Fanworm Polychaete Worm

62. The specialized body segments are the: Head, Thorax and Abdomen

63. Incomplete Metamorphosis (immature forms are often called nymphs) Nymphs resemble the adult in form except for being smaller and lacking fully developed wings and sexual organs. Life Cycle: Egg nymph adult

64. Complete metamorphosis Immature forms are called larvae (larva, singular). The pupal stage is a transition stage, when the larva is transformed to the adult. Pupa molts to the adult form. Life Cycle: Egg --> larva --> pupa --> adult