1. What are filter feeders?
2. What is a cloaca?
3. What are the parts of an earthworm's digestive tract? What are their functions?
4. What is a complete digestive tract? What are the parts? What are their functions?
5. What is the function of each of the following organs?
a. anus
b. cecum
c. gall bladder
d. large intestine
e. liver
f. mouth
g. pancreas
h. small intestine
i. stomach
6. What is the role of mucus in the digestive tract?
7. What is gastric juice?
8. What are vitamins? minerals?
9. What is the function of bile?
10. What are the different kinds of nitrogenous waste?
11. What structures do animals use to get rid of metabolic (nitrogenous) waste?
12. What is the functional unit of the kidneys?