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Practice%20Exam%201

# Practice%20Exam%201 - Practice Exam ENTM/BIOL 127 First...

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Practice Exam ENTM/BIOL 127 First Exam 1) Provide an equation for continuous population growth under conditions where a critical resource becomes limiting with increasing population size. Define all the parameters and variables in the equation. 2) Define the following terms: Population: Partial population: Semelparity: Natality: l x : 3) Insects are often used to study ecological questions. List five ecologically significant characteristics of insects. 4) A population is continuously reproducing and grows logistically with a time lag influencing population growth rate. Which of the following describes the dynamics of this population? (a) The population exhibits a "j-shaped" growth curve. (b) The population growth rate declines linearly to K as N increases. (c) If r τ > 1.570, then the population will show a stable limit cycle. (d) The population will exhibit a "sawtooth" pattern of fluctuations around K. 5) Using the life table below, calculate R 0 and the generation time for this population. x l x m x V x = l x m x l x m x x 0 1.0 0 1 0.8 0 2 0.6 1.0 3 0.4 2.0 4 0.3 4.0 5 0.1 1.0 6)

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