Terminology Quiz 2

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Across
  1. 2. derived gills= 2 chambered heart
  2. 5. used for chemosensory in the Opistobranchs
  3. 7. this type of mass contains the jaw, the radula, and the odontophore of mollusca
  4. 9. types of palps/paired structures both left and right and inner and outer, lateral to the mouth
  5. 11. cyst formation in highly variable environments, when an organism can pump out excess water
  6. 13. lateral folds of the foot
  7. 15. in squid, thin internal structure that is keratin-based, a form of internal shell
  8. 17. sexual intercourse
  9. 19. mantle cavity lateral or posterior)leading to reduction/loss of shell
  10. 20. opening/ breathing pore in the mantle of Pulmonata
  11. 23. elongated feeding tube, suction generating, acts as harpoon for feeding
  12. 27. expulsion that filter-feeding bivalves use in order to get rid of suspended particles
  13. 28. blood vessels pump blood to the heart
  14. 32. chemical & tactile receptor organ
  15. 33. tubular fluid filled cavity that holds the muscular eversible proboscis of a nemertean
  16. 34. tubular structure/rigid case in Class Monogononta
  17. 35. feathery gills; sometimes extensions of the digestive system
  18. 38. formed from ventral body wall muscles used for locomotion in molluscs
  19. 39. style/rod of glycoprotein that works with the gastric shield to break down and digest food
  20. 42. rotifers' ability to change their morphology based on environmental stimuli
  21. 43. calcified tube and its enclosed stand of vascularized tissue thatspirals through the shell from visceral mass, traversing all shell chambers. Controls volume of liquid in shell chambers. Maintain neutral buoyancy as it grows and also in vertical migrations
  22. 45. free living larval stage characterized by a ciliated velum
  23. 46. thick, lateral mantle with calcareous spicules in Class Polyplacophora
  24. 47. specialized sensory structures in class Polyplacophora
Down
  1. 1. tiny colored cells used for camouflage in cephalopods
  2. 3. leads to complex, highly differentiated brains
  3. 4. gills, used for gas exchange and sometimes feeding
  4. 6. right coiled gastropod
  5. 8. blood vessels pump blood to the gills
  6. 10. visceral mass and nervous system become twisted 90 to 180 degrees during development
  7. 12. funnel derived from the foot in which water flows through (used for locomotion)
  8. 14. primitive gills= 3 chambered heart
  9. 16. reflected cells in cepholopods
  10. 18. excretory organ containing nephrostome and renal pore
  11. 21. fixed number of cells in body,then mitosis stops
  12. 22. muscles in hinged shells of bivalves
  13. 24. Proteinaceious shield on the foot
  14. 25. paired sensory organs near gills
  15. 26. series of large sinuses/ body cavity that blood flows through
  16. 29. pulling organic matter from the sediment, mucous brings the material up to the mouth for ingestion
  17. 30. worm-like
  18. 31. light organs used for bioluminescence in some cephalopoda
  19. 36. non-swimming, shelled external parasitic larva which form on parent's gills in freshwater molluscs
  20. 37. secretes calcareous epidermal spicules, plates or shells
  21. 40. cuticular band of teeth in the esophagus
  22. 41. left coiled gastropod
  23. 44. jaws in the muscular pharynx of phylum Rotifera