Midterm2_key

Midterm2_key - Name STUDENT ID Number KEY2 SECOND MIDTERM...

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Unformatted text preview: Name STUDENT ID Number KEY2 SECOND MIDTERM EXAM BIEB 166, Animal Behavior & Communication Spring Quarter, 2002 This exam should consist of 6 pages (including this top page); please check that your exam is complete. Write your name in the space provided on each page . Please write your answers only in the spaces provided on each page. Do not write on the back of the page The exam has a total of 153 points; allot time to each question based upon its point value, and budget your time carefully. You have 50 minutes, so you should spend at most one minute for each two points (you might want to leave a little time at the end for checking over your answers). The exam will end at 2:15 PM. Mean =107, mean % = 70% median =114, Standard Deviation = 30.5 Good luck! BIEB 166: Animal Communication & Behavior Name:__________________ Second Midterm Exam: May 20, 2002 Page 2 of 7 Student points:_____________ SECOND MIDTERM 1. (8 pts) By using the Emlen funnel, researchers were able to demonstrate that migratory birds (circle all that apply) a. orient with reference to star patterns b. shift the direction of the migration urge with different seasons c. can use star patterns to recalibrate their sun compass d. experience migratory restlessness 2. (10 pts) Which of the following is an example of Mullerian mimicry? (circle all that apply): a. Syrphid fly and bumblebee b. Monarch butterfly and viceroy butterfly c. Heliconius erato and Heliconius melipomene d. Two species of poison arrow frogs e. Honey bees and wasps 3. (12 pts total) As the bee walks over comb filled with honey, she produces an air-borne piping sound. The reflection coefficient of honey is 0.5. (8pts) What percentage of her piping sound is transmitted through the honey? R 2 is reflected back and thus 1-R 2 is transmitted. R 2 = 0.25 and thus 75% of the piping sound is transmited through the honey. (4pts) The reflection coefficient is determined by the relative ___________ impedances _________ of the two mediums through which the sound is being transmitted. 4. (10 pts) Particle detectors (circle all that apply) a) Have inherent directionality b) Are widely used by fish and flies c) Are limited to detecting lower frequencies d) Provide limited information about sound intensity e) Can detect fast temporal changes in sound 5. (15 pts) How do honeybees communicate the direction to a good food source? They determine the direction of the food source with respect to the suns azimuth. They transpose this angle with respect to gravity inside the nest. Normally, they orient with respect to gravity and thus when the food source is in the direction of the sun, they dance straight up. 6. (10 pts) Some people have argued that truly endogenous biological clocks do not really exist, all apparently endogenous rhythms are in fact BIEB 166: Animal Communication & Behavior Name:__________________ Second Midterm Exam: May 20, 2002 Page 3 of 7 Student points:_____________ controlled by zeitgebers that are too subtle for us to detect. controlled by zeitgebers that are too subtle for us to detect....
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Midterm2_key - Name STUDENT ID Number KEY2 SECOND MIDTERM...

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