1. 6
Radiate Animals

2. Kingdom Animalia(Metazoa)
Mesozoa
Parazoa
Eumetazoa

3. Radiate Animals
Phylum Cnidaria
Phylum Ctenophora
Coelenterata

4. Radiate Animals Epidermis Gastrodermis Mesoglea Gastrovascular Cavity
Extracelluar Digestion
Tentacles
Statocyst
Ocelli

5. Phylum Cnidaria
Cnidocyte
Nematocyst
Operculum
Cnidocil
Barb

6. Cnidocyte

7. Several types of Nematocysts

8. Dimorphism & Polymorphism
Polyp
Hydroid form
Medusa
Jellyfish form
Tetramerous Symmetry
Gastrozoid
Gonozoid
Dactylozoid

9. Comparison between polyp and medusa

10. Polymorphism

11. Polymorphism

12. Cnidaria Classification
Class Hydrozoa
Class Scyphozoa
Class Cubozoa
Class Anthozoa

13. Epidermis Epitheliomuscular cells Interstitial cells Gland cells
Sensory cells
Nerve cells
Cnidocytes

14. Epitheliomuscular and nerve cells in hydra

15. Gastrodermis
Nutritive-muscular cells
Interstitial cells
Gland cells

16. Hydra with developing bud and ovary

17. Life cycle of Obelia (Class Hydrozoa)

18. A Portuguese man-of-war colony, Physalia physalis

19. Fire coral

20. Class Scyphozoa

21. Cyanea capillata

22. Order Stauromedusae

23. Life cycle of Aurelia (Class Scyphozoa)

24. Class Cubozoa
Cubomedusa
Cube
Sea Wasp

25. Carybdea : a cubozoan medusa

26. Chironex fleckeri

27. Box Jellyfish

29. Girl attacked by Chironex fleckeri

30. Class Anthozoa Subclass Zoantharia or Hexacorallia
Sea anemones / Hard corals
Subclass Ceriantipatharia
Tube anemones / Thorny corals
Subclass Alcyonaria or Octocorallia
Soft corals / Horny corals
Hexamerous plan /Polymerous symmetry
Octomerous plan / Pinnate tentacles

31. Subclass Alcyonaria

32. Sea anemone Oral disc Pedal disc Pharynx Siphonoglyph
Gastrovascular cavity

33. Sea anemone

34. Sea anemone Primary septum Secondary septum Tertiary septum
Septal filament
Protandrous
Pedal laceration

35. Structure of a sea anemone

36. A sea anemone attacked by a sea star

37. Corals Zoantharian corals / Subclass Zoantharia
Thorny corals / Subclass Ceriantipatharia
Alcyonarian corals / Subclass Alcyonaria

38. Zoantharian corals

39. Subclass Ceriantipatharia

40. Black coral jewelry

41. Alcyonarian corals

42. Coral Reefs Scleractinian Hermatypic corals Coralline algae
Fringing reef
Barrier reef
Atoll reef

43. Fringing reef

44. Barrier reef

45. Atoll reef

46. Phylum Ctenophora Sea Walnut Comb Jelly Haeckelia rubra
Bioluminescence

47. Phylum Ctenophora
Class Tentaculata / Pleurobrachia
Class Nuda / Beroe

48. Class Tentaculata

49. Pleurobrachia Colloblast Collenchyme
Digestive system /Gastrovascular system
Pharynx / Stomach
Aboral canal / Statocyst / Anal canal
Statocyst / Statolith
Determinant ( Mosaic )
Indeterminant ( Regulative )

50. Diversity among the phylum Ctenophora