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Exam 2 KEY 2008

Exam 2 KEY 2008 - Principles of Zoology EFB 285 Exam 2...

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Principles of Zoology EFB 285 Exam 2 Select the best answer. Put your answers on the separate answer sheet . 1. Intermediate hosts for Taenia saginata are A) fish. B) mosquitos. C) pigs. A) cattle. 2. Which is the most preferred hypothesis regarding the origin of the Metazoa? A) From a colonial flagellated form B) From a syncytial ciliated form C) Polyphyletic - from more than one group of unicellular organisms. D) From a fungus. 3. Which of the following is not a member of Cnidaria? A) Sea wasps B) Portuguese man-o-war C) Comb jellies D) corals 4. What are the most common helminthic parasite of humans in the U.S.? A) trichina worms B) pinworms C) Ascaris D) hookworms E) filarial worms 5. Fibrous protein from which reptile scales and human fingernails are made of is A) bone B) cartilage C) keratin D) collagen 6. Coral belongs to Class A) Anthozoa. B) Cubozoa. C) Hydrozoa. D) Ctenophora. E) Scyphozoa. 7. Hydra polyps have A) asymmetry. B) bilateral symmetry. C) spherical symmetry. D) radial symmetry. 8. In nematodes the cuticle is made of A) chitin B) collagen C) ocelli D) cartilage 9. Which is true of haplodiploid sex determination? A) Three are no sex chromosomes involved B) Females are from unfertilized eggs C) It occurs in pinworms D) Each of the above are true E) None of the above are true 10. The idea that evolutionary change occurs during relatively brief periods associated with speciation is known as A) punctuated equilibrium. B) phyletic gradualism. C) directional selection. D) stabilizing selection. 11. Lophotrochozoa are so named in part because they have Page 1
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A) an unusual u-shaped opening. B) ecdysis. C) a pseudocoel. D) tracheae. 12. Flatworms are A) eucoelamate B) psuedocoelomate C) acoelomate 13. Elephantiasis is transmitted by A) black flies B) bed bugs C) mosquitoes D) head lice E) drinking contaminated water 14. Oligochaetes have A) annuli. B) a hydrostatic skeleton. C) septa. D) metamerism. E) all of the above. 15. Hookworms feed on A) host blood B) protists C) host intestinal contents D) host cells 16. Which of the following can be contracted by going barefoot? A) pinworm B) intestinal roundworm C) trichina worm D) hookworm 17. Rotifers are a diverse group of animals, but nearly all have a ciliated crown called a A) trochophore B) lophophore C) proboscis D) corona 18. An example of structural coloration is A) human skin B) reptile scales C) cephalopod skin D) bird feathers 19. River blindness is caused by A) microfilariae B) roundworms C) hookworms D) pinworms 20. Lung flukes can be acquired by A) eating uncooked crab meat B) eating undercooked pork C) eating raw fish D) eating snails 21. Proglottids are examples of A) metamerism B) true segmentation C) replication of sex organs D) None of these 22. Cnidarians have A) endoderm only B) ectoderm only C) endoderm and ectoderm D) mesoderm 23. The most diverse class of Phylum Mollusca is Class A) Bivalvia B) Cephalopods C) Gastropoda D) Scaphopoda 24. In animals, indirect development
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Exam 2 KEY 2008 - Principles of Zoology EFB 285 Exam 2...

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