1. Phylum Porifera

2. Sponge Cells - Function Pore cells Osculum Choanocytes (Collar Cells) Amoebocytes Spicules Internal cavity (spongocoel)

4. Water Movement A sponge’s life depends on it! Why is it so important? Feeding Oxygen Waste Reproduction

5. Feeding

6. Reproduction Sexual Sperm exits sponge through osculum Enters another sponge and fertilizes an egg Asexual small buds break off Form new sponge clones Can regenerate

7. Sperm exiting the top of this sponge youtube video youtube video

8. Sponge Protection Skeleton Spongin (protein) Spicules (Calcium carbonate or Silicon dioxide) Gemmules (dormancy) Food-filled balls of amebocytes Protective coating Survive harsh conditions

9. Gemmules

11. Glass Sponge (Japanese Flower Basket)

12. End of Porifera Correct worksheet on Cnidarians

13. Cnidarians

14. Three Classes 1) Hydrozoa – Hydra * Polyp + Medusa 2) Scyphozoa (cup) – Jelly Fish * Medusa 3) Anthozoa (flowering) – Anemonies, Coral * Polyps

16. Commonalities Polyp or Medusa Stage Cnidocytes

17. Cnidocyte

18. Cnidocytes – Key Features Single use cells How do they fire?

19. Chacteristics of Cnidarians: Called Colenterates means" hollow gut” ShapeBody PartsReproduce Polyp Tentacles MedusaNematocysts Gastrovascular Cavity Asexual Sexual Hermaphrodites

20. Class Hydrozoa pg 446 Diagram Most of life is as a polyp Short medusa phase Live in colonies MostlyMostly Sessile

21. Reproduction Asexual – Warm Weather Budding Sexual – Cold Weather Sperm fertilizes egg Develops into a ball of cells with a hard cover, protects until spring

22. Hydroid lifecycle

23. End Of Hydrozoa

24. Scyphozoa

25. Class Scyphozoa Jellyfishes Bell or Cup shaped (MEDUSA) All have venom but not all can hurt people Have a LONG Medusa phase Motile

26. Aurelia Life Cycle

27. Box Jelly Fish

28. Lion’s Mane Jellyfish

29. Feeding How do you think it feeds?

30. Anthozoa

31. Class Anthozoa Means flowering animal Ex sea anemones, coral

33. Sea Anemonies

34. Guess How They Feed!? When do they feed?

35. Symbiotic Relationship

36. Coral

37. Brain Coral

38. Symbiotic Relationship Algae + Coral Source of O 2 for Coral Source of Nutrients for Algae Warm, Shallow, Clear Waters

39. Coral Soft and hard (calcium based skeleton) Small polyps that live in colonies During day, look like hard shells Feed at night Extend out their tentacles

40. Dormant Sun Coral

41. Sun Coral Feeding at Night

42. Reproduction Sexual Asexual

46. Reefs When corals die, their hardened skeletons remain, creating reefs

47. Types of Reefs Fringing Barrier Atoll

48. Coral grows close to the shoreline

49. Coral reef further out from shore

50. Way out in ocean, formed over volcanos or mountains under the water