4. Sessile as Adults No True Tissues Asymmetrical Pores: Multiple Openings Digestion & Excretion: Diffusion No Nerves or Muscles

6. Forms: Polyp & Medusa Two Tissues Radial Symmetry One Opening Gastrovascular Cavity: digestion, excretion & circulation Basic Contractile & Nerve Network

7. Cylindrical body with tentacles projecting outward, stationary Digestive compartment with a single opening. Can function in circulation, body support, waste & gas exchange Umbrella shaped with tentacles, move freely

10. Flame Cells (Excretion) Acoelomates Digestion & Excretion: Diffusion One Opening Ganglia (Simple Nerve Cells) Muscle

12. Two Openings Simple Circulatory System Acoelomates

14. Muscles use Coelomic Fluid Pseudocoelomates No Circulatory System Protostomes = Complete Digestive System

16. Muscles use Coelomic Fluid Pseudocoelomates No Circulatory System Unsegmented Protostomes

18. http://www.youtube.com/watch?v=9-azBDt0kik&feature=related www.youtube.com/watch?v=GRSbC6HAgNE&feature=related

19. Foot, Visceral Mass & Mantle Protostomes Shell (CaCO 3 ) Gills Open Circulatory System (cephalapods are closed)

21. No Joints Protostomes Diffusion Muscles Closed Circulatory System Segmented Nervous System (simple)

22. Subdivision of the body into repeated parts, allows for greater flexibility & mobility Blood pumped into body cavities, organs bathed directly in blood Blood is enclosed in vessels, distributes materials to the body

24. Jointed Limbs Protostomes Exoskeleton (chitin) Malphagion Tubes (excretion) Heart, Open Circulatory System Segmented

26. Bilateral Larva, Radial as Adults Diffusion Tube Feet Spiny Skin Water Vascular System