EcolEEB100F09AKey

EcolEEB100F09AKey - EEB 100 Fall 09 Name & ID_KEY_...

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EEB 100 Fall 09 KEY ___________________ 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:_____________________________________
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EEB 100 Fall 09 KEY ___________________ PUT YOUR NAME ON EVERY PAGE OF THE EXAM BEFORE STARTING. Exam is 400 pts total Multiple Choice. 7 pts each. 1. Two plant species compete for nutrients. Plant A takes up nutrients twice as fast through its roots as plant B, and outcompetes Plant B. This is an example of a. Interference competition b. Preemptive competition c. Exploitation competition 2. Which of the following does NOT contribute to the rainy climate patterns that help support deciduous forests in the Southeastern US? a. The Gulf of Mexico is immediately to the south b. Global circulation cells cause warm moist air to sink at that latitude c. It is too far from the Rockies to be in its rain shadow d. It is coastal 3. If the earth stopped spinning on its axis, which of the following processes would be most greatly affected? a. Coastal Upwelling b. Seasons c. The formation of deserts at 30 degrees latitude d. Cooling of coastlines by the ocean For the following questions, mark A if it is true and B if it is false. A severe hot period caused high mortality in a population of leaf beetles. Only the 60% of the population that possess a particular gene allele survive. Afterwards, the mortality rate of another beetle species, bark beetles, declines, and it expands its habitat from branch areas to leaves that are now devoid of leaf beetles. 4. The heat event acted in a density dependent fashion on the leaf beetles. (F) 5. The response of the bark beetles indicated their population is regulated in a density dependent fashion. (T) 6. There is no niche overlap between the two beetle species. (F)
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EEB 100 Fall 09 KEY ___________________ 7. According to the Predator Prey Model shown below, if Curve X on the graph on the left corresponds to the curves shown in the graph on the right, then which of the following curves corresponds to Curve Y? Curve X is shown in gray within each graph for comparison.
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EcolEEB100F09AKey - EEB 100 Fall 09 Name & ID_KEY_...

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