What are the names of the following cells found in Sponges?

1. Osculum _________ 2. Amoebocyte _________ 3. Pore Cell ____________ 4. Collar Cell ___________   5. What is incurrent pore called “E”? __________________ 6. What is exit for the water flow called “D”?__________________

In Figure to the right which is the: 7. Gastrovascular system _________ 8. Complete digestive system ________ 9. Hydra has which type of digestive system __________ 10. Ascaris has which type of digestive system _________ 11. Dugesia (Planaria) has which type of digestive system________________

Figure Symmetry Types

12. Which one in Figure 3 represents radial symmetry __________.

13. Which two in Figure 3 represents bilateral symmetry _________ and _________.

14. What kind of symmetry is shown in Sponges _______________

15. What kind of symmetry is shown in Cnidaria _______________

16. What kind of symmetry is shown by flatworms ______________ 

Figure 4 Flatworm

17. What is labeled “A” in the flatworm ( Figure 4) _______________

18. What is the special cell type labeled “B” in the flatworm (Figure 4)__________________

19. What is the structure indicated by “C” in the flatworm (Figure 4)____________________

20. What kind of digestive system does the flatworm have?___________________________

21. What kind of body symmetry does the round worm show? _______________

22. Name a parasitic version of the round worm ________________

23. Name the type of digestive system that the round worm has ________________

24. Does the round worm show any segmentation? ________________

25. What kind of symmetry does the earthworm have? ________________

26. Why is the earthworm placed higher on the evolutionary scale than the round worm? ___________________________

27. Why can a earthworm bleed to death but a flatworm will not? _____________________________

28. Why is the earthworm's digestive system considered more efficient than a round worm? ____________________________

29. Does the earthworm distinguish between up and down even though it cannot see? _____________________

30. Does the earthworm have a head? __________________________________

31. Coelom Types (Body Cavities) Higher animals _________________________ Flatworms (Platyhelminthes)_______________ Roundworms (Nematodes)________________

Put the following phyla names on the diagram below:

32. Nematoda

33. Mollusca

34. Annelida

35. Playhelminthes

36. Porifera

37. Cnidaria