Quiz

Record your answers on a separate sheet of paper, then compare them with the correct answers on the "Quiz Answers" page.

1. What is the largest Phylum in the Animal Kingdom in terms of population size? a. Arthropoda b. Mollusca c. Insecta d. Vertebrata

2. What class do amphipods belong to? a. Arthropoda b. Mollusca c. Crustacea d. Copepoda

3. What group of Arthropods dicussed in this web site is known/recognized for its extensive fossil record? a. Ostracods b. Copepods c. Amphipods d. Cladocerans

4. What group is also known as the "sand fleas"? a. Ostracods b. Copepods c. Amphipods d. Cladocerans

5. Which group is characterized by a single, centrally located eye? a. Ostracods b. Copepods c. Amphipods d. Cladocerans

6. Which group is the MOST closely related to lobsters (Order Decapoda)? a. Ostracods b. Copepods c. Amphipods d. Cladocerans

7. What group is also known as the "water fleas"? a. Ostracods b. Copepods c. Amphipods d. Cladocerans

8. In this group, the females carry eggs in a marsupium (sac) until they hatch. a. Ostracods b. Copepods c. Amphipods d. Cladocerans

9. These organisms lack gills and appendages on their abdomens. a. Ostracods b. Copepods c. Amphipods d. Cladocerans

10. Which group is unique because the body trunk bears, at most, two pairs of appendages? (HINT: it has a bivalve shell) a. Ostracods b. Copepods c. Amphipods d. Cladocerans

11-14: Match the picture with it's order or subclass a. Amphipoda b. Ostracoda c. Cladocera d. Ostracoda

15. True or False: Amphipods play an important role in ecosystems. a. False: they don't occur in large enough numbers to have significant ecological importance b. False: they're too small c. True: they make up a large part of the organisms known as 'zooplankton' and are the main source of food for many different organisms. d. True: they are toxic and are responsible for the deaths of large numbers of organisms.

16. True or False: It is possible to collect an organism from all four groups in Knox County for your collection. a. False: one or more of the groups only occurs in salt water b. False: one or more of the groups does not occur in North America c. True: it is possible, but copepods are extremely rare and hard to find. d. True: although many of the organisms occur only in salt water, there are freshwater representatives from all four groups and most are quite common in the rivers, streams or lakes.