152 Final Exam - Questions With Answers

Which of the following are density dependent limits on the population growth of a field mouse species? Select one or more: A. drought (not enough rain) B. Kitty cats C. communicable diseases D. forest fire {Ans: C}Assume your per capita growth rate is 0.2 (per some period of time say a year) and you have 3000 people, how many will you have in the next generation (that is what will the population be)? A. 600 B. 3200 C. 200 D. 3600 E. It depends on how many deaths there were {Ans: D}Which of the following causes populations to shift most quickly from an exponential to a logistic population growth? A. increased birth rate B. removal of predators C. decreased death rate D. competition for resources E. favorable climatic conditions {Ans: D}Why do populations grow more slowly as they approach their carrying capacity? A. Density-dependent factors lead to fewer births and increased mortality. B. Density-independent factors lead to fewer births and increased mortality. C. Hormonal changes promote higher death rates in crowded populations. D. Individuals voluntarily stop mating so that overcrowding does not occur. E. The incoming energy decreases in populations experiencing a high rate of increase