EcolEEB100F10AKey

EcolEEB100F10AKey - EEB 100 Fall 10 Name& ID Page 1 of 9...

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Unformatted text preview: EEB 100 Fall 10 Name & ID________ ___________________ Page 1 of 9 Version A • Don’t open your exam until instructed to. • Write your name and student number on every page of the test before handing in the test (you will lose 10 points if you don’t!). • Answer questions in space provided below each question. Do not write on the back. • Only answers on the front side of pages will be graded. NO EXCEPTIONS. • If you must cross something out and run out of room to answer the question in the space provided, you must request another blank exam page. • Turn off all electronic devices and put them away. They are not to be out on desks or in pockets. • If you need to use the restroom, turn in your exam to a TA. Only one student may leave the room at a time. You may not leave the room with any electronic devices. • Turn in your notes page with your exam. • Good luck! I hereby certify that I have neither given nor received any aid on this exam, and that I have read and understand the instructions above. Sign your name here:_____________________________________ EEB 100 Fall 10 Name & ID________ ___________________ Page 2 of 9 PUT YOUR NAME ON EVERY PAGE OF THE EXAM BEFORE STARTING. Exam is 200 pts total Multiple Choice. 4 pts each. 1. In the logistic model of density dependent growth, what prevents populations from growing exponentially? a. Interspecific competition b. Intraspecific competition c. A combination of inter- and intraspecific competition d. Predators 2. Over very thousands of years, the tilt of the earth’s axis slowly goes through a cycle where it increases and decreases. At the moment, it is decreasing. This means that … a. Seasonal variability in primary productivity will decrease b. Winters in temperate areas towards the poles will be more severe c. Rainfall at the equator will decrease d. The Coriolis effect will decline 3. In the Forrero et al. study of Magellanic penguins, which of the following would not be predicted to occur as a result of a density dependent processes? a. A switch to anchovies as a food source in large penguin colonies b. Fewer offspring from parents in larger colonies c. Penguins from larger colonies foraging longer and further away for food d. Lower fledgling condition in as a result of poor parental diet in denser colonies 4. As an environmental biologist, you are called in to consult on the management of a wild game population of pheasants. The pheasants and their predator, foxes, go through large cycles of increasing and decreasing population sizes. In addition to the foxes, the pheasant population can also be limited by the number of seeds available for food. Which of the following might you recommend as a way of helping stabilize the populations?...
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This note was uploaded on 12/06/2011 for the course EEB 100 taught by Professor Halpin during the Fall '08 term at UCLA.

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EcolEEB100F10AKey - EEB 100 Fall 10 Name& ID Page 1 of 9...

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