1. Traditionally, the annelids have been considered closely related to A) echinoderms. B) hemichordates. C) arthropods. D) chordates. E) poriferans.

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1 Chapter Traditionally, the annelids have been considered closely related to A) echinoderms. B) hemichordates. C) arthropods. D) chordates. E) poriferans. 2. Recent evidence suggests that annelids share common ancestry with A) Mollusca. B) Nematoda. C) Chordata. D) Echinodermata. E) Kinorhyncha. 3. Which of the following phyla of animals is not considered lophotrochozoan? A) Annelida B) Mollusca C) Nemertea D) Arthropoda E) Platyhelminthes 4. is the segmental arrangement of body parts. A) Metamerism B) Triploblastism C) Tagmatization D) Serialism E) Cephalization 5. Which of the following is NOT a characteristic of the phylum Annelida? A) body with metameric segments B) chitinous exoskeleton C) closed circulatory system D) ventral ganglionated nerve cords E) excretion by metanephridia or protonephridia 6. Some segmented animals have groups of segments specialized for particular functions. The process of forming distinct body regions is called: A) metamerism. B) eutely. C) tagmatization. D) cephalization. E) differentiation. Page 1

2 7. A feature that does NOT characterize annelids is A) a ventral nerve cord. B) bilateral symmetry. C) a complete digestive tract. D) an acoelomate condition. E) triploblastic organization. 8. The most speciose class of annelids is. Its members are primarily marine. A) Chaetognatha B) Oligochaeta C) Hirudinea D) Gnathostomulida E) Polychaeta 9. The class of annelids that contains some members with poison glands associated with their jaws is A) Polychaeta. B) Oligochaeta. C) Hirudinae. D) Gnathostomulida. E) Chaetognatha. 10. Polychaetes are distinguished by lateral extensions of the body called A) parapodia. B) setae. C) prostomi. D) palps. E) tentacles. 11. The region of the polychaete head that is dorsal and anterior to the mouth, and is sensory in function, is the. A) gnathostome B) prostomium C) peristomium D) protostome E) pygidium 12. The body part surrounding the mouth and bearing tentacles is the. A) pharynx B) head C) peristomium D) notopodium E) cirrus Page 2

3 13. The body cavity of most annelids is divided into compartments by curtains of tissue called A) cirri. B) setae. C) muscles. D) septa. E) pleura. 14. External respiratory exchange in most annelids is accomplished by A) ventilation. B) active transport. C) endocytosis. D) facilitated diffusion. E) diffusion. 15. increase the surface area for respiratory exchange in some polychaetes. A) Parapodial gills B) Dermal branchiae C) Annuli D) Septa E) Mesenteries 16. Polychaetes have a circulatory system. A) bloodless B) closed C) lacunar D) open E) countercurrent 17. Every polychaete body compartment has a ganglion which aids in coordination of swimming and crawling. A) suprapharyngeal B) subpharyngeal C) segmental D) cerebral E) cephalic 18. The are unusual parts of the annelid nervous system responsible for rapid movements such as escape reactions. A) segmental ganglia B) subesophageal ganglia C) cerebral fibers D) giant fibers E) supraesophageal ganglia Page 3

4 19. are sensory pits on the heads of polychaetes with chemoreceptors for food detection. A) Olfactors B) Auricles C) Statocysts D) Phasmids E) Nuchal organs 20. The major nitrogenous waste produced by annelids is A) ammonia. B) urea. C) uric acid. D) guanine. E) urine. 21. are the excretory organs of most polychaetes. A) Chloragogues B) Metanephridia C) Osphradia D) Nuchal glands E) Ommatidia 22. The open, ciliated funnel of the metanephridium is the A) infundibulum. B) epitoke. C) nephrostome. D) nephridiopore. E) flame bulb. 23. Some polychaetes exhibit epitoky; the is the non-reproductive individual. A) anatoke B) heterotoke C) protogyn D) atoke E) hypertoke 24. The two annelid subclasses containing the earthworms and the leeches have now been united into the class A) Hiruchaeta. B) Chaetognatha. C) Polychaeta. D) Oligodinea. E) Clitellata. Page 4

5 25. The girdle-like structure used for mucus secretion during copulation in oligochaetes is the A) clitellum. B) parapodium. C) atoke. D) epitoke. E) prostomium. 26. During feeding, the of oligochaetes helps to pump in food. A) prostomium B) pharynx C) clitellum D) esophagus E) mouth 27. The is a thin-walled storage area in the oligochaete digestive tract. A) pharynx B) stomach C) crop D) esophagus E) gizzard 28. As in birds, the acts to grind food in the oligochaete digestive tract. A) gastric mill B) pharynx C) crop D) gizzard E) stomach 29. The is a dorsal invagination that increases the surface area of the earthworm intestine. A) crop B) clitellum C) esophagus D) chloragogen E) typhlosole 30. Clitellate reproduction may be characterized by A) the female picking up the spermatophore with the cloaca. B) reciprocal sperm transfer. C) hypodermic impregnation. D) amplexus. E) shedding of gametes into the environment. Page 5

6 31. In annelids, the is a site of amino acid metabolism. A) liver B) typholosole C) chloragogen tissue D) clitellum E) kidney 32. Chloragogen tissue of annelids is similar in function to the vertebrate A) kidneys. B) pancreas. C) gall bladder. D) liver. E) spleen. 33. Annelids convert ammonia to urea in A) the metanephridia. B) calciferous glands. C) nuchal glands. D) clitellar tissue. E) chloragogen tissue. 34. Clitelates may be characterized as with respect to reproduction. A) monoecious B) dioecious C) asexual D) protandric E) parthenogenic 35. In the class Clitellata, the larval form is A) a trochophore. B) absent. C) a veliger. D) dormant. E) free-living. 36. Leeches belong to the annelid subclass A) Oligochaeta. B) Chaetognatha. C) Hirudinea. D) Gnathobdellida. E) Polychaeta. Page 6

7 37. The superficial external rings on a leech are called: A) proglottids. B) tagmata. C) metameres. D) annuli. E) strobilia. 38. Leeches typically lack A) segments. B) a digestive tract. C) sense organs. D) a pharynx. E) setae. 39. The anticoagulant secreted by leech salivary glands is A) hirudin. B) saliva. C) salivary amylase. D) hemerythrin. E) prothrombin. 40. Over the last several thousand years, leeches have been utilized by humans A) to attack foreign invaders. B) to remove blood from the body. C) to prevent malaria. D) as food. E) to investigate the functioning of nervous systems. 41. The members of the annelid class are considered closest to the ancestral annelid condition. A) Chaetognatha B) Gnathobdellida C) Polychaeta D) Oligochaeta E) Clitellata 42. Leeches become when searching for food. A) negatively phototactic B) negatively thigmotactic C) negatively chemotactic D) positively phototactic E) positively thigmotactic Page 7

8 43. Of the following features characteristic of oligochaetes, which is LACKING in polychaetes? A) coelom B) spiral cleavage C) setae D) triploblastic development E) clitellum 44. Which of the characters below is not a feature of leeches? A) hypodermic impregnation B) asexual reproduction C) reciprocal sperm transfer D) sexually reproductive E) production of a cocoon 45. Unlike other annelids, echiurans A) have an open circulatory system. B) do not possess setae. C) undergo radial cleavage. D) are not segmented. E) have enterocoelous coelom formation. 46. Which of the following groups of worms are not in the phylum Annelida? A) earthworms B) beard worms C) spoon worms D) peanut worms E) flatworms 47. The echiurans and two groups of deep sea worms are likely to be A) removed from the Clitellata. B) removed from the Annelida. C) added to the subclass Hirudinea. D) added to the subclass Oligochaeta. E) added to the class Polychaeta. 48. The class Clitellata was recently created to A) unite the polychaetes and leeches. B) unite the polychaetes and earthworms. C) unite the oligochaetes and leeches. D) further subdivide the leeches. E) further subdivide the oligochaetes. Page 8

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