2010 Exam Key 3

2010 Exam Key 3 - NPB 102 Animal Behavior Winter 2010 Exam...

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1 NPB 102, Animal Behavior Name: _______________________________________________ Winter 2010 Exam 3 Student ID #____________________________________ Instructions: This exam has SIX PAGES, NONE OF THEM BLANK !! Make sure that your copy is complete before beginning. If you want us to be able to return your exam to you by leaving it in the hall boxes in Briggs hall, sign the authorization on this page . Read each question very carefully to be certain that you understand what is being asked. We will not answer any questions about the exam during the exam! Please do not come up to ask an instructor about any exam questions during the exam. If you believe a question is a bad question you may make a note on your exam for the instructors to consider. I hereby give the instructors of NPB 102 my permission to return my exam to me by leaving it in the hall boxes in Briggs Hall. Signature: ______________________________________________________________
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2 Multiple Choice : (1 pt each) Circle the letter of the one best choice to complete each of the following: 1) In one set of experiments pinealectomized, enucleated American Tree Sparrows were first exposed to long days for an extended period of time, then exposed to short days for several weeks, and then re-exposed to long days again. This experiment tested the hypothesis that: a) Neither the eyes nor the pineal are needed for a normal reproductive response to changing photoperiod. b) Neither the eyes nor the pineal are needed for long days to induce reproductive development. c) Neither the eyes nor the pineal are needed for long days to induce photorefractoriness. d) Neither the eyes nor the pineal are needed for short days to dissipate photorefractoriness. e) The experiment actually successfully tested all of the above hypotheses. 2) Which of the following is a proximate hypothesis regarding the mechanism responsible for hibernators knowing when to emerge from hibernation? a) Increasing temperature in the spring acts as a driving cue that stimulates hibernators to terminate hibernation and emerge. b) Hibernators possess an endogenous “circannual clock” in the brain that spontaneously signals an increase in metabolism and motivation to come above ground in spring. c) Hibernators use a “circa-lunar” clock that causes them to arouse monthly from torpor, actively check conditions above ground, and to return below ground and re-enter torpor for another month if conditions are not yet suitable for emergence. d) All of the above. e) None of the above. 3) The best evidence that stonechats possess circannual rhythms is: a) Their reproductive physiology and plumage molt changes cyclically under constant photoperiod. b)
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This note was uploaded on 04/09/2010 for the course NPB NPB 102 taught by Professor Hahn during the Spring '10 term at UC Davis.

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2010 Exam Key 3 - NPB 102 Animal Behavior Winter 2010 Exam...

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