Practice Questions from Phylum Porifera

Chapter 11: Classification

1. What are the three ears of Whittaker's 5 kingdoms?
2. What group is common to all three "ears" above?
3. What is the common ancestor of Animalia?
4. What type of symmetry do Sea Stars have?
5. What type of symmetry does a fish have?
6. What type of symmetry does a blasula have?
7. What germ layers does Diploblastic refer to?
8. In the blastula what germ layer is being formed?
9. With the formation of the blastopore what germ layer is being formed?
10. In Protostomes where do the Mesoderm cells arise?
11. T/F - All Metazoans are Triploblastic.
12. What type of coelom formation do true coelomate Protostomes have?

Chapter 12: Porifera

1. T/F - Members of Porifera are sessile only as juveniles.
2. Who first proposed that metazoans arose from a colonial flagellated form?
3. What does the blastopore become in protostomes?
4. T/F - Metazoans appear to be a monophyletic group.
5. Phylum Porifera are named after what body characteristic?
6. What type of symmetry do many sponges have?
7. What type of feeding do sponges do?
8. What is the name of the flagellated "collar cells" of sponges?
9. T/F - Sponges live comensally with many other animals.
10. T/F - Sponges are a great food source for lots of marine animals?
11. What are the 4 specialized cells of a sponge?
12. What is the gelatinous layer of sponges called?
13. Spicules of Sponges are either __________ or __________?
14. T/F - The canal type is used to identify different Classes of Phylum Porifera?
15. What are the 3 Classes of Phylum Porifera?
16. Class Demospongiae has __________ spicules?
17. Which Class has spicules composed of Calcium Carbonate?
18. T/F - Sponges have intracellular digestion?
19. T/F - Sponges lack an endoderm?
20. In an Asconoid Sponge the Choanocytes line the __________?
21. The water exit the Sponge through the __________?
22. In a Syconoid Sponge the Choanocytes line the __________?
23. How is the Leuconoid Sponge different from the other types?
24. In a Leuconoid Sponge the Choanocytes line the __________?
25. The ____________ are totipotent cells within Poriferans.
26. What are two different larval types of Phylum Porifera?
27. T/F - The sponges that belong to Class Calcarea are very large, complex sponges that have calcium carbonate spicules.
28. Sponges from Class Demospongia are usually what canal type?
29. Sponges can reproduce both sexually and asexually.
30. What special organs do all sponges have?
31. What specific sponges are used in medical research and what kinds of ways are they used?
32. The harp sponge is a __________ feeder.