Annelida questions

1. Annelids are known for their body _________.
2. What class do earthworms belong to?
3. T/F - Annelids have a more complex circulatory system than the Flatworms, Ribbonworms, and Roundworms.
4. What class do leaches belong to?
5. What is the other class of Phylum Annelida?
6. What is the body segment marked by a circular groove called?
7. What type of symmetry do Annelids have?
8. T/F - Leaches are triploblastic but lack a true coelom and gut.
9. What is the name of the wall that seperates the segments?
10. Which of the following systems is present in an annelid?
1. Nervous system
2. Metanephridium
3. Circulatory system
4. Respiratory system
5. Protonephridium
11. The tiny chitinous bristles present in oligochaets and polychaets are called _________.
12. T/F - Oligochaets are mainly benthic marine dwellers. 
13. Lateral appendages that are highly vascularized by capillaries and aid in movement, respiration and support are called _________.
14. Are polychaets monecious or diecious?
15. T/F - Annelids have circular and oblique muscles but lack longitudinal muscles.
16. Are all Polychaets carnivorous?
17. T/F - Oligochaets are monecious, lack parapodia but contain setae.
18. Is the nerve cord in Oligochaets dorsal or ventral?
19. Describe the process of fertilization in Oligochaets.
20. What is the structure that forms a mucus sac during fertilization?
21. What class do tubifex worms belong to, and what fish disease are they an intermediate host for?
22. What is the classification of the parasite that causes the fish disease answered above.
23. What class do leeches belong to?
24. T/F - Leeches lack sete, parapodia and a clitellum.
25. The anticoagulant expressed to aid in feeding is called __________.