After reading this chapter and analyzing the content, it is assumed that you can:

1. List the major characteristics of the phylum Annelida.
   
   
2. Discuss how members of clade Clitella are distinguished from polycheates.
   
   
3. Describe the body plan of annelids.
   
   
4. Discuss how the hydrostatic skeleton of annelids helps them to burrow.
   
   
5. Describe ways that polychaetes obtain food.
   
   
6. Relate the function of the pharynx, calciferous glands, crop, gizzard, typhlosole, and chloragogen tissue in earthworms.
   
   
7. Compare and contrast the main features of the following organ systems in the different classes of annelids: circulatory system, nervous system, and excretory system.
   
   
8. Identify the general differences between freshwater oligochaetes and earthworms.
   
   
9. Discuss the ways leeches obtain food.
   
   
10. Describe how Siboglinids receive nourishment.
    
    
11. Identify shared features of annelids and echiurans.
    
    
12. Describe the habitat of sipunculans and their feeding mechanism.