Name:_________________________________________
Chapter 33-34 Review
1. List the types of organisms found in the following phyla
Porifera:
Cnidaria:
Platyhelminthes:
Nematoda:
2. What do collar cells do for sponges?
3. What type of symmetry do sponges have?
4. What are spongin and spicules? How do they help sponges?
5. How do sponges obtain their food?
6. What function do amoebocytes serve in sponges?
7. Describe 3 ways can sponges reproduce.
Name:_________________________________________
8. What two life stages do cnidarians have?
9. How do cnidocytes and nematocysts help cnidarians survive?
10. What is planula?
11. How are ctenophores different than cnidarians?
12. How can planarians reproduce asexually?
13. Why do flatworms not need circulatory or respiratory systems?
14. What phylum includes round worms?
15. How can humans get trichinosis?
16. Describe the difference between endoparasites and ectoparasites.
17. What is the function of the cerebral ganglia in flatworms?
Name:_________________________________________
18.
Refer to the illustration above. Which organism is most closely related to a jellyfish?
a. 1
c. 3
b. 2
d. 4
19. Sponges
a.
b.
c.
d.
are nonsymmetrical.
lack organization into tissues and organs.
possess cells that are capable of recognizing other sponge cells.
All of the above
20. Which of the following is a characteristic associated only with cnidarians?
a. a digestive tract with a single opening
b. cnidocytes specialized for defense and capturing prey
c. choanocytes containing nematocysts
d. a parasitic life cycle
21. Planula larvae of scyphozoans
a. result from fertilization of eggs by sperm.
b. swim freely through the water.
c. settle to the ocean bottom and grow into polyps.
d. All of the above
22. The class of cnidarians that typically live only as polyps is the
a. Anthozoa.
c. Scyphozoa.
b. Hydrozoa.
d. None of the above
23. Which of the following is not a characteristic of ctenophores?
a. bioluminescence
b. movement by means of beating cilia
c. use of cnidocytes to capture prey
d. hermaphrodism
Name:_________________________________________
24. Roundworms have a fluid-filled cavity called a
a. coelom.
c. digestive system.
b. pseudocoelom.
d. None of the above
25.
a.
b.
c.
d.
A rotifer uses ____ to collect excess water in order to remove the water from the body.
diffusion
kidneys
flame cells and excretory tubules
a mastax