1. 100 200 300 400 500! 100 200 300 400 500! 100 200 300 400 500! 100 200 300 400 500! Short Answer Phylum/Class Mollusk More Phylum/ Class Mollusk Hard Questions

2. Gastropods secrete shell from?

3. Mantle

4. Scrapes food like a file

5. Radula

6. Internal structures which function in exchanging O 2 and CO 2

7. Gills

8. Siliceous supporting structure found in some Porifera.

9. Spicules

10. Advanced development of head and nervous system

11. cephalization as in cephalopods

12. A sea urchin body is called a test.

13. Echinoderm

14. This organism has no true tissue or symmetry.

15. Porifera Sponges

16. Nudibranchs are aggressive carnivores.

17. Gastropod

18. Jet propulsion with excurrent siphon

19. cephalopods

20. Segmented body and two sets of antennae.

21. arthropods

22. Pearls come from this group.

23. Bivalves

24. Some live as polyps, some as medusa, some both at stages of their lives.

25. Cnidaria

26. Pentamerous – in love with 5 others.

27. Echinoderm

28. Nematocysts are stinging cells.

29. Cnidarian

30. Pedicellariae prevent organisms from growing on their body.

31. Echinoderm

32. Structures on cephalopods that help them camouflage or communicate.

33. chromatophore

34. Secrete byssal thread that attach them to rocks and other surfaces.

35. Bivalve Mussels

36. Explain difference between cross and self fertilization.

37. cross – a different organism of same species self – own egg and sperm

38. Guts are protruded out to distract predators.

39. Evisceration

40. Describe how sponges get their food.

41. The choanocytes create current and draw water in through pores food is caught by collar cells then water goes out osculum.