Unformatted text preview: Practice Questions for Midterm I Examination EEMB 2 Introductory Biology (Ecology) Winter 2008 1. The statistician Verhulst is best known for... a) suggesting that geometric growth was balanced by natural resistance to growth b) suggesting that mortality rate increased as the sixth root of density of a population c) being the "father of demography" d) deriving the equation which describes the logistic growth of populations e) recognizing the importance of relationships of organisms in determining species assemblages 2. What factor limits the local distribution of the small barnacle species (Chthamalus) in the rocky intertidal zone in Britain? a) a barrier to dispersal b) predation c) a chemical toxicant d) competition e) none of the above is correct 3. A direct physical interaction over resources in which both individuals are harmed is classified as: a) interspecific competition b) exploitative competition c) competitive exclusion d) intraspecific competition e) interference competition 4. Assuming an exponential rate of population growth: If the initial population size (N) in year one is 100 and the intrinsic growth rate of the population (r) is 0.03 per year, what will be the population size in year two? a) 103 b) 300 c) 1003 d) 3000 e) none of the above is correct 5. Which of the following is not a possible outcome of interspecific competition between species 1 and species 2 as predicted by the Lotka-Volterra equations? a) extinction of species 1 and species 2 b) species 1 will go extinct c) species 1 and 2 will coexist d) species 2 will go extinct e) all of the above are correct 6. The graph on the right (B) is an example of: a) inverse density-dependent control b) density-independent control c) density-dependent control d) a destabilizing mortality rate e) death rates that are not dependent on prey density A) # Killed % Killed B) Prey density Answers: 1. D 2. D 3. E 4. A 5. A 6. C ...
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This note was uploaded on 04/07/2008 for the course EEMB 2 taught by Professor Evan during the Winter '07 term at UCSB.
- Winter '07