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midterm2-f99 - Name Page 1 of 8 Instructions-Write your...

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Name: Page 1 of 8 Instructions: --Write your name on all the pages --Make sure that all 8 pages are attached. GENERAL ECOLOGY PCB 4044 FALL 1999 MIDTERM II (Nov. 3, 1999) PAGE POINTS POSSIBLE SCORE 2 14 _____ 3 10 _____ 4 10 _____ 5 15 _____ 6 25 _____ 7 12 _____ 8 14 _____ _____ _________ TOTAL 100 _____
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Name: Page 2 of 8 1. (4 points) a) At what institution did you take the Ecology and Evolution portion of Introductory Biology (at UF, this would correspond to BSC 2011)? Please give the name of the institution (e.g., UF, SFCC, USF, etc.) or indicate AP if you placed out of the Introductory Biology series. b) Who was your instructor(s) for the Ecology portion of Introductory Biology? 2. (10 points) The Janzen-Connell model supports the theory that plants benefit by having frugivores disperse their seeds away from the parent tree. a) Based on the Janzen-Connell model, draw the expected seed shadow and survivorship curves on the axes below (be sure to label the axes). b) On this same figure, draw the curve describing seedling recruitment. c) Explain the biological mechanisms that give rise to these patterns.
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Name: Page 3 of 8 3. (10 points) Two species compete for resources. Their interaction can be described using the Lotka-Volterra Competition Equations. The following data are available: in the absence of Species A, Species B reaches an equilibrium density of 60 / acre. in the absence of Species B, Species A reaches an equilibrium density of 50 / acre.
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