Identify structures  No. 1-12

13. To what Phylum does this organism belong?

14. To what Class does this organism belong?

                  Answers

1. prostomium

2. mouth

3. buccal cavity

4. pharynx

5. esophagus

6. nephridia

7. seminal vesicles

  8. dorsal blood vessel

  9. ventral blood vessel

10. aortic arches

11. cerebral ganglion

12. ventral nerve cord 

13. Phylum Annelida

14. Class Oligochaeta