Fall 2009 Study Key

Fall 2009 Study Key - Practice Questions for the Final Exam...

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Practice Questions for the Final Exam EEB 100 KEY 1) T 2) F 3) F 4) F 5) T 6) T 7) T 8) T 9) F 10) T 11) F 12) T 13) F 14) T 15) F 16) F 17) F 18) F 19) T 20) T 21) T 22) F 23) F 24) F 25) F 26) b 27) c 28) c 29) a 30) d 31) a 32) e 33) b 34) d 35) d 36) d 37) e 48) d 39) d 40) b
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41) Antipredator adaptations work by either or both increasing the search time and/or the handling time of predators so that it becomes not-economical for the predators to select a given prey. See Alcock or lecture notes for examples. 42) If help mother raise a younger full sibling: r = 0.5 to own offspring , r = 0.5 to full sibling which is recipient’s offspring Since B/C > r donor to own offspring / r donor to recipient’s offspring = 1 any incremental benefit will allow the behavior to evolve or be favored 43) There are many possible costs of sociality, including predator attraction, disease transmission, resource competition, and mate competition. See Alcock for additional costs of sociality. 44) Time Load Search Time Travel Time Optimal load 45) Altruism occurs when an action by one individual increases the direct fitness of another individual but decreases the direct fitness of the actor. The problem is that we would not expect true altruism to evolve by natural selection. Hamilton’s solution was that individuals could acquire fitness both directly (by raising their offspring) and indirectly (by helping other relatives survive). 46) See paper critique handout. 47) The tabula rasa idea was challenged by experiments showing that animals are only capable of making certain kinds of associations. In one such experiment, rats were shown to quickly learn not to drink saccharin flavored water when they were exposed to x-rays (which induce nausea) but the rats were unable to learn not to drink the same water when they received an electric shock for doing so. Conversely, the rats could be taught to avoid drinking water when lights were
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Fall 2009 Study Key - Practice Questions for the Final Exam...

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