LS1S09Exam1AKey

LS1S09Exam1AKey - LS1 Spring 09 Name& ID Page 1 of 9...

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Unformatted text preview: LS1 Spring 09 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 5 points if you don’t!). • Use a pencil on the multiple choice, and a pen on the short answer. • Mark scantrons neatly, one answer per question. Erase changes completely. • Answer written questions in space provided. 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 space to answer the question in the space provided, you must request another blank exam page. • Absolutely no electronic devices at your desk. • No food, no bottle with labels. • Use a pencil on the multiple choice, and a pen on the short answer. • 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. • Circle which TA & Section you are in o James Holmquist o Sara Painter o Dan Stahler o Jeff Wolf o Deb Pires • 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:_____________________________________ LS1 Spring 09 Name & ID________________________________ Page 2 of 9 PUT YOUR NAME ON EVERY PAGE OF THE EXAM BEFORE STARTING. Exam is 200 pts total Part 1 Multiple Choice. 25 questions, 5 pts each 1. A small number of birds arrive on an island from a neighboring larger island. This small population begins to adapt to the new food plants available on the island, and their beaks begin to change. About twice a year, one or two more birds from the neighboring island arrive. What effect do these new arrivals have? a. Their arrival speeds the process of speciation. b. Their arrival tends to promote adaptation to the new food plants. c. Their arrival tends to slow adaptation to the new food plants. d. Their arrival represents a colonizing event. 2. Most speciation processes are slow, in that they may take many generations for speciation to take place, except … a. Vicariance b. Founder effect c. Polyploidy d. Sexual selection 3. In terms of evolution, the extinction patterns in the fossil record indicate a. The number and types of species have changed over time b. That simple organisms inevitable evolve into more complex forms c. That species diversity declines over time a. That nothing lasts forever 4. Evolution occurs primarily at the level of the a. Individual b. Population c. Species d. Phenotype e. Allele 5. The development of resistance to cyanide poisoning in California citrus scale is an excellent example of evolution by natural selection. Which of the following characteristics of this situation were critical to the evolutionary process?...
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LS1S09Exam1AKey - LS1 Spring 09 Name& ID Page 1 of 9...

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