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Name _________________________________________________________ Period ______ Score ______
Unit 7 Questions
1. What does the word echinoderm mean? ___________________________
2. Where do echinoderms live? ________________________________________
3. Where can echinoderms NOT live? _____________________ and _______________________
4. What type of symmetry do echinoderms have? _____________________________ what does that
mean? ____________________________________________________________________
5. What is the exoskeleton of an echinoderm made out of? ________________________________
6. What 3 organs does an echinoderm NOT have? __________________________________________
7. What sensory organs do some echinoderms have? ______________________________________
8. The top of an echinoderm is called the ______________ surface and the bottom is called the
___________________ surface.
9. What 3 purposes does the water-vascular system serve? ______________________________________
10. Where are the tube feet of an echinoderm located? ___________________________________
11. What creates the suction in the tube feet? _________________________________________________
12. What 3 types of feeders are echinoderms? _________________________________________________
13. What does nocturnal mean? __________________________________________________
14. What are 2 body parts echinoderms can regenerate? _________________________________________
15. What is spawning? ___________________________________________________________________
16. What type of asexual reproduction do echinoderms have? ____________________________________
17. How are the larvae different than the adult echinoderms? ____________________________________
18. What are the larvae of echinoderms called? ________________________
19. Starfish are in class __________________, sea cucumbers are in class _________________________,
sea urchins and sand dollars are in classs ______________________, feather stars are in class
_____________________ and brittle stars are in class ______________________.
20. Where are starfish found? __________________________________________________________
21. The arms of sea stars are found in multiples of _____
22. How is the body plan of a sea star different than that of a basket star?
__________________________________________________________________________________
23. What is the madreporite for? _______________________________________________
24. Where are the tube feet of a sea star located? ___________________________________
25. Sea cucumbers can be found in _________________________ to _____________________________
26. A sea cucumbers body is ____________________, ___________________ and __________________
27. What are the tube feet of a sea cucumber modified into? _______________________
28. How does a sea cucumber breathe? ______________________ and ____________________________
29. How does a sea cucumber feed? _______________________________________________________
30. What defense do sea cucumbers have? _____________________ and _________________________
31. What is sea cucumber poison used for in medical research? ___________________________________
32. What is self-evisceration? ____________________________________________________________
33. Where do sea urchins live? _________________________________________________
34. What is the exoskeleton of a sea urchin called? _______________
35. What 3 things are the spines of a sea urchin used for? ______________________________________
36. What 3 things are the tube feet of a sea urchin used for?
__________________________________________________________________________________
37. What are pedicellarines? ________________________________________________________
38. What is another name for the Aristotle’s lantern in a sea urchin or sand dollar? __________________
39. What does the podia do? ______________________________________________
40. What are 5 things sea urchins will eat? ____________________________________________________
41. Sand dollars are shaped like _____________________________________
42. Where do sand dollars live? ____________________________________________________________
43. What are cilia used for in sand dollars? ___________________________________________
44. How do sand dollars move across the sea floor? _________________________________
45. What are lunules? ___________________________________________________________________
46. What is the purpose of lunules in a sand dollar? ______________________________________
47. What are pedalloids? ____________________________________________________________
48. What is the purpose of pedalloids in a sand dollar? ___________________________________
49. Where are the tube feet of a sand dollar found? ___________________________________
50. What 2 structures aid in the sand dollars respiration? ________________________________________