1. Roundworms are ________________ worms that have __________________ and digestive systems.
2. List the two openings a roundworm has. __________________________________________
3. Name the cavity between the endoderm and mesoderm layers. __________________________

4. A pseudocoelom is a ________________ coelom
______________________________________________________________________________
5. Which body systems are more complex; the free-living roundworms or the parasitic forms?
__________________________________________

6. Name and the five physiological functions of the roundworm.
1. ________________________________________________________________________
2. ________________________________________________________________________
3. ________________________________________________________________________
4. ________________________________________________________________________
5. ________________________________________________________________________

7. Free living roundworms that are predators use _________________ mouthparts and _______________ to catch their food
8. What type of fertilization do roundworms use to reproduce? ___________________________
9. Parasitic roundworms include _______________-causing worms, filarial worms, ____________ worms, and hookworms.
10. Name the place where the adult Trichinella roundworm lives? ________________________
11. Why is Trichinosis so painful for humans? _______________________________________
_____________________________________________________________________________
12. How is Trichinosis spread to humans? ___________________________________________
_____________________________________________________________________________
13. Filial worms are _______________ worms that live in the __________ and _________ _____________ of birds and mammals, including humans.
14. What is Elephantiasis and what causes it? ________________________________________
_____________________________________________________________________________

15. Look at Careers in Biology - Meat Inspector
If we did not have meat inspectors here in the U.S., what possible problems could we as a consumer of meat face? ______________________________________________________________
16. What is the main symptom that Ascarid worms cause? ______________________________
17. How is the parasite Ascarid lumbricoides spread? _____________________________________

Look at the figure below.

18. How are the eggs released from the body? ________________________________________
19. How do the worms get back into the host (dogs) ____________________________________

20. Name two species (besides humans) that are affected by Ascarid worms? _____________________________________
21. Describe the process of how a hookworm infects its host. ____________________________
______________________________________________________________________________
22. Caenorhabditis elegans is a free-swimming roundworm. This roundworm was the first of all animals to have what done? _____________________________________________________

Please fill in missing material on Roundworms in the below table: