Zoology 250 Worm cross-section practice quiz

INSTRUCTIONS: Select an answer you believe to be correct, then press "Check."

1. To what class does this specimen belong?
Annelida.
Polycheata.
Hirudinea.
Oligocheata.
Onychophora.

2. Identify structure D.
typhlosole.
intestine.
dorsal blood vessel.
clitellum.
ventral longitudinal muscle.

3. What is the function of structure C?
excretion.
absorption.
osmotic regulation.
mastication.
circulation.

4. To what class does this specimen belong?
Turbellaria.
Polycheata.
Hirudinea.
Platyhelminthes.
Onychophora.

5. Identify structure A.
typhlosole.
intestine.
dorsal blood vessel.
pharynx.
gonad.

6. What is the function of structure B?
ingestion.
digestion.
osmotic regulation.
reproduction.
locomotion.

7. To what class does this specimen belong?
Annelida.
Polycheata.
Hirudinea.
Oligocheata.
Onychophora.

8. Identify structure D.
typhlosole.
intestine.
dorsal blood vessel.
clitellum.
dorsal longitudinal muscle.

9. What is the function of structure I?
excretion.
absorption.
osmotic regulation.
circulation.
locomotion.

10. To what phylum does this specimen belong?
Annelida.
Nemertea.
Nematoda.
Oligocheata.
Onychophora.

11. Identify structure G.
gonad.
intestine.
hemocoel.
pharynx.
seminal vesicle.

12. What is the function of structure F?
circulation.
control of locomotion.
osmotic regulation.
reproduction.
absorption.

13. To what phylum does this specimen belong?
Annelida.
Nemertea.
Nematoda.
Oligocheata.
Onychophora.

14. Identify structure C.
gonad.
intestine.
hemocoel.
pharynx.
seminal vesicle.

15. What is the function of structure D?
circulation.
control of locomotion.
osmotic regulation.
produce gametes.
absorption.

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(revised April 6, 2015)