1. Porifera, Cnidaria and Ctenophora Specimen Lab

2. 1. What phylum is this organism classified in?

3. 2. What class is this organism classified in?

4. 3. What features did you use to determine #1? #2?

5. 4. What type of symmetry does this sponge have?

6. 5. What phylum is this organism classified in?

7. 6. What are the four “circular” objects in the center of the jellyfish ?

8. 7. What body style does this cnidarian have? Medusa or Polyp?

9. 8. What features would allow you to classify this organism as a Cnidarian?

10. 9. What type of symmetry does this organism exhibit?

11. 10. What class is this organism classified in?

12. 11. This organism is in the class hydrozoa. This is a colonial organism. What are the three types of organisms that make up the colony called? ANd what does each organism do?

13. 12. What body form, medusa or polyp, does this sea anemone have?

14. 13. What phylum and class is this organism classified in?

15. 14. These are comb jellies. What phylum are they found in?

16. 15. Why are these organisms not in the phylum Cnidaria?

17. 16. What structure is the needle pointing to
16. What structure is the needle pointing to? (Hint it is where water exists the the sponge?)

18. 17. What two types of materials can spicules be made out of
17. What two types of materials can spicules be made out of? Circle the one you think this sponge has.

19. 18. Draw and label the following for the hydra: tentacles, body stalk, and bud

20. 19. What type of reproduction is budding? Asexual or sexual?

21. 20. This specimen is a medusa
20. This specimen is a medusa. Based on what you know about the life cycle of the jellyfish, was this organism produced sexually or asexually?

22. 21. What class are corals classified in?

23. 22. Are coral organisms individuals (solitary) or colonial?

24. 23. What is the chemical composition of a coral exoskeleton?

25. 24. Are the coral organisms polyps or medusa?