Unsegmented Worms Study Guide
Test Date __________________________________
1. A cuticle is a living (cellular) or nonliving (noncelluar) protective layer? (Circle one)
2. A tegument is a living (cellular) or nonliving (noncelluar) protective layer? (Circle one)
3. What type of symmetry do flatworms have? ____________________________________________________
4. The knob-like head of tapeworms with hooks and suckers is called what? _______________________________
5. The hermaphroditic reproductive structure in tapeworms is called what?
________________________________________
6. Adult blood flukes of the genus Schistostoma live, feed, and reproduce sexually in what host?
____________________________________
7. What is the intermediate host for the larva form of blood flukes? ________________________
8. What type of roundworm is common in the United States and most often passed from child to child
through touching contaminated objects and then putting hands in mouth?
_________________________________________
9. The ____________________________________ in flatworms are part of the excretory system that removes
nitrogen waste.
10. What type of digestive system do worms with a pharynx have? ________________________________________
11. Do roundworms or flatworms cause heartworms in dogs and cats?
_________________________________________
12. How do worms breathe? _____________________________________________________________
13. Which type of flatworm is free-living rather than parasitic? _________________________________
14. Which types of worms could humans contract by eating undercooked meat? (More than one type)
15. The reproductive process of planarians is called _______________________________________. Describe this
process.
16. When an organism has a concentration of nerve cells in the anterior region, we say this organism
exhibits ____________________________________. The name for the simple brain in worms is
________________________________.
17. Which type of worm has a pharynx, flame cells, and eyespots? ______________________________
18. Which type of roundworm lives in the soil and burrows into a person’s feet?
_______________________________________________
19. The light sensitive eyespots in flatworms are called ___________________________________.
20. What two things help planarians with movement? ____________________________________________
______________________________________________________________________________________________________
21. What do worms in Class Turbellaria feed off of? ______________________________________________
Flatworms
Roundworms
Phylum
Type of Body Cavity
Examples
22. List the parasitic Nematodes.
23. List the parasitic flatworms.
24. How are heartworms transmitted? _________________________________________________________________
25. What type of worm can humans get from eating undercooked pork? _________________________
26. Phylum _______________________________, Class Turbllaria—Examples:
27. Phylum _______________________________, Class Trematoda—Examples:
28. Phylum _______________________________, Class Cestroda—Examples:
29. Phylum Nematoda (roundworms) Examples:
30. Organisms that live on the outside of a host are called ___________________________________ while organisms
that live inside a host are called __________________________________________.
31. How does food enter a tapeworm? Does it have a mouth? __________________________________________________
____________________________________________________________________________________________________________________
32. Does a tapeworm have a digestive system? Why or why not? ______________________________________________
____________________________________________________________________________________________________________________
33. Does a tapeworm fertilize its own eggs? What is this process called? ______________________________________
____________________________________________________________________________________________________________________
34. What happens to the oldest, most mature proglottids in a tapeworm? _____________________________________
_____________________________________________________________________________________________________________________
35. Do how many digestive openings do roundworms have? What type of digestive system would this be?
_____________________________________________________________________________________________________________________
Labeling.