Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Textbook Question
Chapter 56, Problem 7TYK
The smallest population that can sustain its numbers is
- a. the declining population.
- b. the effective population.
- c. the minimum viable population.
- d. the vortex population.
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Which of the following is not true of a population of largepredators in a small reserve?a. The species may disappear from the reserve.b. The species will probably undergo a populationexplosion.c. The species will probably lose genetic diversity.d. The species may overeat its prey, causing a reduction inprey population.
The carrying capacity (K) is the maximum population size that can be supported or sustained by a given environment. Which of the following statements about the carrying capacity is NOT true?
Select one:
a. We can think of K as some "average" value that a given environment can support.
b. Environmental fluctuations cause the carrying capacity to fluctuate over time.
c. Once a population reaches its carrying capacity, the size of the population remains constant.
d. When a population overshoots K, individuals die due to lack of resources.
The“mean generation time” of a population equals:a.(x lxmx)/R0.b.nx.c.lx mx.d.x lx mx.e.none of the choices apply.
Chapter 56 Solutions
Study Guide for Campbell Biology
Ch. 56 - Prob. 1IQCh. 56 - Is the effective population size larger or smaller...Ch. 56 - Prob. 3IQCh. 56 - Prob. 4IQCh. 56 - What are some potential benefits of corridors? How...Ch. 56 - What factors would favor the creation of larger,...Ch. 56 - List some of the ways by which we may slow global...Ch. 56 - Describe the four major threats to biodiversity.Ch. 56 - Prob. 2SYKCh. 56 - Prob. 3SYK
Ch. 56 - Prob. 1TYKCh. 56 - Ecosystem services include all of the following,...Ch. 56 - The most serious threat to biodiversity is a....Ch. 56 - Prob. 4TYKCh. 56 - Prob. 5TYKCh. 56 - Prob. 6TYKCh. 56 - The smallest population that can sustain its...Ch. 56 - Movement corridors are a. strips or clumps of...Ch. 56 - Prob. 9TYKCh. 56 - Prob. 10TYKCh. 56 - Prob. 11TYKCh. 56 - Prob. 12TYKCh. 56 - Thinning of the ozone layer is a result of CFCs...Ch. 56 - Sustainable development a. uses nature reserves to...Ch. 56 - Which of the following statements reflects a...
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- A population’s ecological footprint is measured in terms of: a how many resources the population uses. b how much land area is needed to support its lifestyle. c the amount of waste/pollution it produces. d the number of people who live there.arrow_forwardWhat is the major difference between density-dependent and density-independent factors? A. Density-dependent factors are more harmful. B. Density-independent factors affect the population despite the density. C. Density-independent factors are more harmful.arrow_forwardJapan currently exhibits which of the following age-structures (population profiles)? A. the column population profile B. the inverted pyramid population profile C. the bulge population profile D. the pyramid population profile E. all of the abovearrow_forward
- What is the purpose of age pyramids? Select one: a. It is useful in determining whether a population is at carrying capacity or not. b. It is used to compare exponential or logistic growth rate. c. It is a useful tool to predict the future population size of a region. d. It helps to determine whether the population is K-selected or r-selected.arrow_forwardCarrying capacity is defined as a species’ average population size in an environment. Which of the following resulted to exceeding carrying capacity in a particular environment? a. increasing birthrates, decreasing deathrates, increasing immigration and no emigration takes place b. increasing birthrates, decreasing deathrates, decreasing immigration and no emigration takes place c. increasing birthrates, decreasing deathrates, decreasing immigration and increasing emigration d. decreasing birthrates, increasing deathrates, increasing immigration and increasing emigrationarrow_forwardPopulation growth that is dependent on the number of individuals A. Arithmetic Growth B. Carrying Capacity C. Intrinsic Rate of Growth D. Exponential Growtharrow_forward
- Which of the following would not be an example of density-deperident factors regulating population size? The number of possible territories for robins is limited; thus when population sizes are high, a lower proportion of individuals can produce offspring. A. O B. In conditions of overcrowding, some desert pupfish living in ponds will emigrate to other ponds if given the opportunity. C.Predation on mosquitofish is high, regardless of population size. D. In conditions of high density, mice are more susceptible to mortality from heat stress. E. In a habitat patch with a high density of muskrats, a disease spreads more rapidly and results in higher mortality.arrow_forwardIfthe age distribution diagram is bottom heavy or pyramidal in shape, thisindicates that the population is:a.stable.b.declining.c.growing slowly.d.growing rapidly.e.cannot be determined.arrow_forwardThe total number of species present in a community is called the a. species evenness. b. species richness. c. species-area relationship. d. population.arrow_forward
- How does the logistic growth model of population growth differ from the exponential growth model? A. The graph of the exponential model is S-shaped. B. The logistic growth model shows an unrestricted growth rate. C. The logistic growth model considers the environment's carrying capacity. D. The exponential growth model shows a restricted growth rate.arrow_forwardWhich of the following is a factor that would decrease the size of a population? A. Death rate is higher than the birth rate B. Abundant food supply C. Immigration D. Birth rate is higher than the death ratearrow_forwardThe logistic population growth model, dN/dt = rN[(K – N)/K], describes a population’s growth when an upper limit to growth is assumed. As N approaches (numerically) the value of K a. dN/dt increases rapidly. b. dN/dt approaches 0. c. dN/dt increases slowly. d. the population becomes threatened by extinction.arrow_forward
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