Porifera, Cnidaria and Ctenophora Specimen Lab

1. What phylum is this organism in?

2. What class is the sponge classified in?

3. Why?

4. What type of symmetry does this organism exhibit?

5. The hard spike-y structures are spicules. What two materials can spicules be made of? Circle the material you think this sponge’s

spicules are made of.

6. The pointer is pointing at the top of the sponge where water exits. This is

called the ____________.

7. What phylum is this organism classified in?

8. What class is this organism classified in ?

9. What type of symmetry does this organism exhibit?

10. What class of the phylum Cnidaria is this sea anemone classified in?

11. Sketch the hydra. Label the following: body stalk, tentacle, bud.

12. What type of reproduction is represented in the hydra slide?

13. On this jelly you can see the gelatinous layer between the ectoderm and endoderm.

This is known as the ___________.

14. Aurelia flavidula. Sketch

and label the following :

gonads, tentacles, oral arms, mouth

15. What type of skeleton does this organism have?

16. Jellyfish have two body plans. The ephyra is the transitional body

form produced by a ____ asexually. The

ephrya grows to become an

organism with the _______ form.

17. What is the coral skeleton made of?

18. What are the cup-like structures where the coral polyp sits called?

19. Briefly describe how stony coral grows vertically.

20. This hydrozoan is a colonial organism. List the three organisms

in the colony and their “jobs.”

21. These are comb jellies. What phylum are they found in?

22. Why are comb jellies not classified with the jellyfish of phylum Cnidaria?