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RU BL 262 - Examination

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BIOLOGY 262, FALL 1998EXAMINATION #3 (PART 1)Name Date MULTIPLE CHOICE.For the following multiple choice questions circle the letter in front of theresponse that best answers the question or completes the sentence. (20 points, 2 points each)1. Which of the following phyla hasmembers that possess an anus?a. Platyhelminthesb. Poriferac. Cnidariad. Rotiferae. None of the above (all lack anuses)2. Which of the following is NOT true aboutFungi?a. They secrete enzymes to digest food.b. They often have life cycles with adikaryotic stage.c. They have cell walls with cellulose.d. They are composed of hyphae.e. None of the above (all are true)3. Which of the following have radialsymmetry as adults?a. Platyhelminthesb. Rotiferac. Echinodermatad. the lophophoratese. None of the above (all are bilateral)4. Which of the following is ABSENT inmembers of the Subphylum Urochordata?a. somitesb. notochordc. enterocoelomd. dorsal nerve corde. None of the above (all are present inurochordates)5. What is the function of the amnion?a. dispose of wasteb. gas exchangec. nutritiond. protect embryoe. None of the above6. Which of the following is NOTcharacteristic of protostomes?a. determinate cleavageb. ventral nerve cordc. spiral cleavaged. schizocoelome. None of the above (all are characteristicspossessed by protostomes)7. What is the correct order of developmentfor an animal?a. gastrula → blastula → morulab. blastula → morula → gastrulac. morula → gastrula → blastulad. blastula → gastrula → morulae. morula → blastula → gastrula8. Which of the following is true andprovides evidence that Animals and Fungiare closely related?a. They both make sperm by meiosis.b. They both store food as glycogen.c. They both have absorptive nutrition.d. They both contain acetylcholine.e. None of the above (all are false)9. Which of the following tissues surroundsan enterocoelom?a. ectodermb. pachydermc. endodermd. mesoderme. endoderm & mesoderm10. Which of the following is NOT acharacteristic of all arthropods?a. moltingb. open circulatory systemc. exoskeletond. antennaee. None of the above (all are present in allarthropods)MATCHING.For the following exercise match the answers in the right column with thecorresponding words in the left column. Each letter may be used more than once.(7 points, 1 pt.each)1. mycorrhizae 2. lamprey 3. tapeworm 4. lichen 5. sponge A. photosynthesisB. predationC. mutualismD. suspension feedingE. parasitismFILL-IN-THE-BLANK.For the following exercises write the appropriate word or words in theavailable space.(23 points)1. Fill in the appropriate labels for thefollowing drawing. (4 points) a. b. 2. Fill in the limbs below. (6 points) SPIDER INSECT Seg. 1 Seg. 2 Seg. 3 3. The class that includes the ray-finnedfishes is .(3 points)4. Label synapomorphies for the indicatedbranches below. (6 points) Amphibia Mammalia Reptilia C B A a. b. c. 5. Label synapomorphies for the indicatedbranches below. (4 points) Porifera Cnidaria Other Animals B A a. b.BIOLOGY 262, FALL 1998EXAMINATION #3 (PART 2)Name Date DEFINITIONS.For the following words or phrases define them as accurately and concisely aspossible. (20 points, 4 points each)1. Torsion (Hint: the biological term not the term from physics):2. Mycelium:3. Viviparous:4. Triploblastic:5. Meroblastic Cleavage:SHORT ANSWER. For the following answers, address each question in as concise and lucid amanner as possible. Do NOT exceed the space provided. (10 points)1. Explain how a schizocoelom forms. (3 points)2. How and from what did vertebrate jaws evolve? (3 points)3. What evidence supports the placement of birds in class Reptilia? (4 points)SHORT ESSAYS.For the following essays, address each question in as concise and lucid amanner as possible. Do NOT exceed the space provided. (20 points)1. Describe the life cycle of a mushroom. Include all life cycle stages, ploidies, and importantstructures. Also indicate all cellular processes that occur. (Feel free to use text and/ordrawings for your answer.) (10 points)2. Explain how a newly fertilized egg keeps other sperm from causing polyspermy? Be sure tomention all important structures and processes. (10


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