1. Wake-up 1.Explain the difference between one and two way digestion. 1.What is an example of an animal in the phylum Porifera? THINK about what it sounds like.

2. Porifera and Cnidarians

3. Invertebrates Do not have a backbone/ vertebrate

4. Phylum Porifera - Sponges

5. Characteristics: Simplest group of animals

6. Characteristics: They are sessile, which means that they do not move around; attached

7. Skeletal system: Spicules; small glass like fragments that provide support

9. CharacteristicsCharacteristics: Lack tissue; have individual cells that each perform a specific function

10. FeedingFeeding: Absorb food through membrane or trap within mucus and then absorb

11. Sponge Feeding Video

12. Respiratory system: Diffusion; Sponges absorb oxygen and food from their surroundings

13. Circulatory system: Diffusion; Sponges move oxygen and food from their surroundings through their “body”

14. Reproductive: Budding (Asexual); a new sponge grows from the original

15. Reproductive: Fragmentation (Asexual); A piece breaks off of a sponge and then grows into a new organism

16. Reproductive: Hermaphrodite with Internal Fertilization; Both sexes present; Release sperm to fuse with egg

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20. Sponge Harvesting

21. Wake-up 1.Why are Porifera in the Animal Kingdom? 2.How do sponges consume food?

22. Phylum Cnidaria

23. Characteristics: All have tentacles

24. Two Basic Body Shapes 1. Medusa: Tentacles pointing downward

25. Two Basic Body Shapes 2. Polyp: Tentacles pointing upward; often sessile.

26. NematocystsNematocysts: Structures on tentacles that are used to get prey; like a Harpoon gun

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28. Skeletal system: Hydrostatic (Water “skeleton”)

29. Digestive system: Two Way Food moves into the mouth into the gastrovascular cavity to be digested and then back out the mouth

30. Respiratory system: Diffusion Oxygen is absorbed from surrounding environment

31. Nervous system: Nerve Net Network of nerves throughout body; respond to stimuli

32. Reproductive system: Budding Offspring develop from parent; identical copy

33. Reproductive system: External Fertilization

34. Example: Sea Anemone

37. Example: Jellyfish

42. Life: Creatures of Deep 12:30

43. Hydra

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46. Coral

51. Planet Earth: Shallow Seas 5:10