UCLA EEB122 MIDTERM2

UCLA EEB122 MIDTERM2 - Ecology (EEB 122) 10/18/2010 1....

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10/18/2010 1. Petunia, a commonly cultivated plant with brightly colored flowers, exhibits an annual life history in temperature climates, i.e., the plant grows, produces flowers, sets seed and dies at the end of the year. If you are starting a nursery with 10 Petunia plants, how long will it take for the nursery to produce more than 60 plants given a birth rate of 2 plants per year and no seed mortality from one year to the next? Assume that the bank has agreed to loan you enough money to buy soil, fertilizer and an assistant to hand pollinate every single plant in the nursery. (a) Never, because the population dies out (b) 2 years (c) 2.5 years (d) 3 years (e) 3.2 years 2. The graph below illustrates the population dynamics of a captive beetle population, based on data collected every week for a period of three years. Based on the dynamics you see in the graph, which of the following models would be the most appropriate for predicting future population sizes? (a) Geometric
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UCLA EEB122 MIDTERM2 - Ecology (EEB 122) 10/18/2010 1....

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