Exam 2 - 2008-Spring

Exam 2 - 2008-Spring - Name Page 1 of 9 Instructions-Write...

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Unformatted text preview: Name: Page 1 of 9 Instructions: --Write your name on all the pages --Make sure that all 9 pages are attached. --You may not use calculators or other electronic aids. The math needed to solve a problem should be relatively simple. If you can't do the math, just show what needs to be calculated (e.g., "answer = .5 x .3") --If you get hung up on a problem, skip it; return to it after you’ve answered the “easy” problems. GENERAL ECOLOGY PCB 3034/4044 Spring 2008 EXAM 2 PAGE POINTS POSSIBLE SCORE 1 2 _____ 2 12 _____ 3 15 _____ 4 8 _____ 5 11 _____ 6 13 _____ 7 10 _____ 8 17 _____ 9 12 _____ _____ _________ TOTAL 100 _____ ( 2 points ): 1) Are you interested in being an undergraduate TA for this course next year? ( YES, NO ) 2) From where/whom did you take Intro Bio (Ecology): e.g., “UF, Dr. Palmer”: ________ Name: Page 2 of 9 2-1. a. ( 4 points ) Rank the following animals in order of lowest to highest production efficiency . Also indicate lowest and highest with words. _____worm that eats decomposing plant material _____fish that eats other fish _____goose that grazes on wetland grasses _____chicken that eats grain b. ( 4 points ) Explain your ranking for each organism in relation to its (1) activity level, (2) assimilation efficiency of food resources and (3) thermoregulation. 2-2. (4 points ) Explain why there are no wood eating hummingbirds. Name: Page 3 of 9 3-1. Assume that trophic efficiency for phytoplankton-animal energy transfer is 10%, animal-animal energy transfer is 50%. a) (5 points ) How many kg of phytoplankton would it take to produce 70 kg of human biomass if that phytoplankton is first eaten by sardines, the sardines are eaten by tuna, and the tuna is eaten by humans? b) (5 points ) How many kg of sardines would it take to produce 70 kg of human biomass if the humans ate the sardines directly? How many kg of phytoplankton if the humans ate the phytoplankton directly?...
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Exam 2 - 2008-Spring - Name Page 1 of 9 Instructions-Write...

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