FinalKEy2009

FinalKEy2009 - BILD 3, Spring 2009. Dr. Kohn Section or TA...

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BILD 3, Spring 2009. Dr. Kohn FINAL Page 1 Section or TA ________________ Name_________________ Directions: There are 17 pages in this exam, not including this cover sheet. Please put your name on each page. Only exams written in ink will be accepted for regrades. You can use the space below the line on this page as scratch paper, and there is additional space for scratch on the last page. There are 55 questions. Please be sure your exam is complete. Read each question carefully. Think before you write and confine your answer to the space provided. We will collect exams promptly at 10:50. Page 3. Page 4. Page 5. Page 6. Page 7. Page 8. Page 9. Page 10. Page 11. Page 12. Page 13. Page 14. Page 15. Total (Space on the reverse side may be used for scratch)
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BILD 3, Spring 2009. Dr. Kohn FINAL Page 2 Section or TA ________________ Name_________________ Course total and grade: __
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BILD 3, Spring 2009. Dr. Kohn FINAL Page 3 Section or TA ________________ Name_________________ 1. (6 pts) Southern coastal California is considered a world-wide hotspot of endangered biodiversity. Why does this region contain so many species in danger of global extinction? High level of endemic species because of Mediterranean climate and isolation from rest of continent by deserts and mountains. High level of development threatening these endemic species. 2. (6pts) What are the three mechanisms of ecological succession? a. tolerance b. facilitation c. inhibition 3. (4pts) The Divergence time between two races of body lice on humans has been used as evidence of: a. Ancient racial divides among humans b. Contact between Homo sapiens and Homo erectus before the extinction of the latter. c. Acquisition of lice when HIV jumped from chimps to humans 4. (2pts) The nutrient that is most limiting for primary productivity in the open ocean is: a. Nitrogen b. Calcium c. Iron d. Phosphorous 5. (4pts) The evolution of a diverse group of species from a common single ancestral species upon introduction to a new location is called ___ adaptive radiation_ ___. (two words)
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BILD 3, Spring 2009. Dr. Kohn FINAL Page 4 Section or TA ________________ Name_________________ 6. (6pts) In lecture, we learned that Gray Tree frog females prefer to mate with males with long songs. Briefly describe the experiment that was done to test whether long songs were an honest indicator of higher male quality (good genes) and whether the results supported the good genes hypothesis. Took egg masses of females and split them. Fertilized half of each egg mass with sperm from long calling males, half with sperm from short calling males and compared these groups for growth and performance traits of offspring (growth rate, time to metamorphosis, etc.) Where significant differences were found, they always favored the offspring of long-calling males, supporting the good genes hypothesis. 7. (4pts) A food chain has three trophic levels.
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FinalKEy2009 - BILD 3, Spring 2009. Dr. Kohn Section or TA...

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