Chapter 12: Population Growth and RegulationUnder ideal conditions, populations can grow rapidly. Study Guide Exam 3.

Chapter 12: Population Growth and Regulation Under ideal conditions, populations can grow rapidly. 1. In what way is the geometric growth model different from the exponential growth model? a. The geometric growth model uses continuous time. b. The geometric growth model uses regular time intervals. c. The geometric growth model includes carrying capacity (K). d. The exponential growth model includes carrying capacity (K). Answer: b Use this figure for questions 2 and 3. 2. Which plot is consistent with an exponential growth model when r > 0? a. I b. II c. III d. IV Answer: c 3. Which plot is consistent with a geometric growth model in which λ = 1? a. I b. II c. III d. IV Answer: a 4. Which is likely to follow an exponential increase in population size? I. a population of mice that has consumed most of the food in its habitat II. A small population of rats recently introduced to an island with many resources III. bacteria recently placed on a new petri dish with suitable growth medium a. I only b. II only c. III only d. I and II only e. II and III only Answer: e 5. In a population growing according to the exponential growth model, population size is a. limited by density-dependent factors. b. limited by density-independent factors. c. limited by both density-dependent and density-independent factors. d. not limited. Answer: d 6. In the exponential growth model, which term indicates the intrinsic rate of increase? a. N0 b. e c. r d. t Answer: c 7. Consider a biologist studying a population of deer. At the beginning of the year, there are 100 adult deer in the population. Over the course of the year, 15 adult deer die, and an additional 25 deer are born. What can we conclude about λ for this year? a. λ < 0 b. λ = 0 c. λ