Quiz
Bio Exam 4 Chapter 53
Create a free account to finish this quiz
Save your progress and see your final score.
Already have an account? Sign in
Questions in this quiz (44)
1Suppose researchers marked 800 turtles and later were able to trap a total of 300 individuals in that population, of which 150 were marked. What is the estimate for total population size?
- AA) 200
- BB) 1,050
- CC) 1,600
- DD) 2,100
2There's a lot of pictures and graphs for the possible questions on this next exam so I 10/10 recommend looking at the actual test bank, especially for this chapter
- ANice
- BThanks
- Cvenmo: hleemo99
3Which of the following assumptions must be made regarding the mark-recapture estimate of population size?
I) Marked and unmarked individuals have the same probability of being trapped.
II) The marked individuals have thoroughly mixed with the population after being marked.
III) No individuals have entered or left the population by immigration or emigration, and no individuals have been added by birth or eliminated by death during the course of the estimate.- AA) I only
- BB) II only
- CC) I and II only
- DD) I, II, and III
4Which of the following is the most important assumption for the mark-recapture method to estimate the size of wildlife populations?
- AA) More individuals emigrate from, as opposed to immigrate into, a population.
- BB) Over 50% of the marked individuals were trapped during the recapture phase.
- CC) There is a 50:50 ratio of males to females in the population before and after trapping and recapture.
- DD) Marked individuals have the same probability of being recaptured as unmarked individuals during the recapture phase.
5To measure the population of lake trout in a 250-hectare lake, 400 individual trout were netted and marked with a fin clip, then returned to the lake. The next week, the lake was netted again, and out of the 200 lake trout that were caught, 50 had fin clips. Using the mark-recapture estimate, the lake trout population size could be closest to which of the following?
- AA) 200
- BB) 400
- CC) 1,600
- DD) 80,000
6Long-term studies of Belding's ground squirrels show that immigrants move nearly 2 kilometers from where they are born and become 1%-8% of the males and 0.7%-6% of the females in other populations. On an evolutionary scale, why is this significant?
- AA) These immigrants make up for the deaths of individuals, keeping the other populations' size stable.
- BB) These immigrants provide a source of genetic diversity for the other populations.
- CC) Those individuals that emigrate to these new populations are looking for less crowded conditions with more resources.
- DD) Gradually, the populations of ground squirrels will move from a clumped to a uniform population pattern of dispersion.
7An ecologist recorded 12 white-tailed deer, Odocoileus virginianus, per square kilometer (km2) in one woodlot and 20 km2 in another woodlot. What was the ecologist comparing?
- AA) density
- BB) dispersion
- CC) carrying capacity
- DD) range
8Uniform spacing patterns in plants such as the creosote bush are most often associated with ________.
- AA) patterns of high humidity
- BB) the random distribution of seeds
- CC) competitive interaction between individuals of the same population
- DD) the concentration of nutrients within the population's range
9Which of the following groups would be most likely to exhibit uniform dispersion?
- AA) red squirrels, who actively defend territories
- BB) cattails, which grow primarily at edges of lakes and streams
- CC) dwarf mistletoes, which parasitize particular species of forest tree
- DD) lake trout, which seek out cold, deep water high in dissolved oxygen
10Which of the following examples would most accurately measure the dispersion of a population being studied?
- AA) counting the number of times a one-kilometer transect is intersected by tracks of red squirrels after a snowfall
- BB) measuring the distance between several burrows within a large prairie dog colony in a grassland
- CC) measuring the average distance between individuals and their nearest neighbor, and then analyzing the variation and comparing those measurements at larger scales
- DD) counting the number of zebras from airplane census observations
11Which of the following scenarios would provide the most accurate data on population density?
- AA) Count the number of nests of a particular species of songbird and multiply this by a factor that extrapolates these data to actual animals.
- BB) Count the number of pine trees in several randomly selected 10-meter-square plots and extrapolate this number to the fraction of the study area these plots represent.
- CC) Use the mark-recapture method to estimate the size of the population.
- DD) Calculate the difference between all of the immigrants and emigrants to see if the population is growing or shrinking.
12Which of the following is the best natural example of a uniform pattern of dispersion?
- AA) bees collecting pollen in a wildflower meadow
- BB) moss spores floating in the wind to new locations of a forest
- CC) territorial songbirds in a mature forest during mating season
- DD) mushrooms growing on the floor of an old growth forest
13In July 2008, the United States had a population of approximately 302,000,000 people. How many Americans were there in July 2009, if the estimated 2008 growth rate was 0.88%?
- AA) 567,760,000
- BB) 304,657,600
- CC) 304,000,000
- DD) 2,657,600
14 In 2008, the population of New Zealand was approximately 4,275,000 people. If the birth rate was 14 births for every 1,000 people, approximately how many births occurred in New Zealand in 2008?
- AA) 6,000
- BB) 42,275
- CC) 59,850
- DD) 140,000
15A population of ground squirrels has an annual per capita birth rate of 0.06 and an annual per capita death rate of 0.02. Using these birth and death rates, calculate an estimate of the total number of individuals added to (or lost from) a population of 1,000 individuals in one year.
- AA) 120 individuals added
- BB) 40 individuals added
- CC) 20 individuals added
- DD) 400 individuals added
16Starting from a single individual, what is the size of a population of bacteria at the end of a 2-hour time period if they reproduce by binary fission every 20 minutes? (Assume unlimited resources and no mortality.)
- AA) 16
- BB) 32
- CC) 64
- DD) 128
17During exponential growth, a population always ________.
- AA) grows at its maximum per capita rate
- BB) quickly reaches its carrying capacity
- CC) adds more new individuals when the population is small than when it is large
- DD) loses some individuals to emigration
18Consider two old-growth forests: One is undisturbed while the other is being logged. In which region are species likely to experience exponential growth, and why?
- AA) old growth, because of stable conditions that would favor exponential growth of all species in the forest
- BB) old growth, because each of the species is well established and can produce many offspring
- CC) logged, because the disturbed forest affords more resources for increased specific populations to grow
- DD) logged, because the various populations are stimulated to a higher reproductive potential
19Imagine that you are managing a large game ranch. You know from historical accounts that a species of deer used to live there, but they have been extirpated. After doing some research to determine what might be an appropriately sized founding population, you reintroduce them. You then watch the population increase for several generations, and graph the number of individuals (vertical axis) against the number of generations (horizontal axis). With no natural predators impacting the population, the graph will likely appear as ________.
- AA) a diagonal line, getting higher with each generation
- BB) an "S" that ends with a vertical line
- CC) an upside-down "U"
- DD) a "J," increasing with each generation
20Which statements about K are correct?
I) K varies among populations.
II) K varies in space.
III) K varies in time.
IV) K is constant for any given species.- AA) only I and III
- BB) only II and IV
- CC) only I, II, and III
- DD) only II, III, and IV
21As N approaches K for a certain population, which of the following outcomes is predicted by the logistic equation?
- AA) The population growth rate will not change.
- BB) The population growth rate will approach zero.
- CC) The population size will increase exponentially.
- DD) The carrying capacity of the environment will increase.
22Which of the following causes populations to shift most quickly from an exponential to a logistic population growth?
- AA) favorable climatic conditions
- BB) removal of predators
- CC) decreased death rate
- DD) competition for resources
23According to the logistic growth equation, dN/dt = rN ((K-N)/K) , ________.
- AA) the number of individuals added per unit time is greatest when N is close to zero
- BB) the per capita growth rate (r) increases as N approaches K
- CC) population growth is zero when N equals K
- DD) the population grows exponentially when K is small
24What is the primary limiting factor that determines why no female animal can produce a very large number of very large eggs?
- AA) Time is limited.
- BB) There are energy constraints.
- CC) Temperature constraints will prevent females from carrying too many eggs.
- DD) There will be an increase in predation pressure if the females carry too many large eggs.
25You observe two breeding female fish of the same species. One female lays 100 eggs and the other female lays 1,000 eggs. Which one of the following outcomes is most likely, given the limits of fitness trade-offs?
- AA) The female laying 1,000 eggs breeds more often than the female laying 100 eggs.
- BB) The female laying 100 eggs lives longer than the female laying 1,000 eggs.
- CC) The eggs from the female laying 1,000 eggs have larger yolks than the yolks of the eggs from the female laying 100 eggs.
- DD) The female laying 100 eggs is larger than the female laying 1,000 eggs.
26Which pair of terms most accurately describes life history traits for a stable population of wolves?
- AA) semelparous; r-selected
- BB) semelparous; K-selected
- CC) iteroparous; r-selected
- DD) iteroparous; K-selected
27Natural selection involves energetic trade-offs between ________.
- AA) choosing how many offspring to produce over the course of a lifetime and how long to live
- BB) producing large numbers of gametes when employing internal fertilization versus fewer numbers of gametes when employing external fertilization
- CC) increasing the number of individuals produced during each reproductive episode and a corresponding decrease in parental care
- DD) high survival rates of offspring and the cost of parental care
28Which of the following traits is characteristic of K-selected populations?
- AA) offspring with good chances of survival
- BB) many offspring per reproductive episode
- CC) small offspring
- DD) a high intrinsic rate of increase
29In which of the following situations would you expect to find the largest number of r-selected individuals?
- AA) a recently abandoned agricultural field in Colorado
- BB) a sand dune community south of Lake Michigan
- CC) an old-growth forest with large, mature trees
- DD) a coral reef community off the coast of Mexico
30Often the growth cycle of one population has an effect on the cycle of another. As moose populations increase, for example, wolf populations also increase. Thus, if we are considering the logistic equation for the wolf population,
dN/dt = rN((K-N)/K)
which of the factors accounts for the effect of the moose population?- AA) r
- BB) N
- CC) rN
- DD) K
31A population of white-footed mice becomes severely overpopulated in a habitat that has been disturbed by human activity. Sometimes intrinsic factors cause the population to increase in mortality and cause lower reproduction rates to occur in reaction to the stress of overpopulation. Which of the following is an example of intrinsic population control?
- AA) Owl populations frequent the area more often because of increased hunting success.
- BB) Females undergo hormonal changes that delay sexual maturation, and many individuals suffer depressed immune systems and die due to the stress of overpopulation.
- CC) Clumped dispersion of the population leads to increased spread of disease and parasites, resulting in a population crash.
- DD) All of the resources (food and shelter) are used up by overpopulation, and much of the population dies of exposure and/or starvation.
32Which of the following statements regarding the future of populations in developing, less industrialized countries are correct?
I) The reproductive rates are predicted to remain below replacement level.
II) Survivorship will increase.
III) Overall population size will increase dramatically.
IV) The fertility rate is predicted to remain high, especially in some regions.- AA) only I and III
- BB) only II and IV
- CC) only II, III, and IV
- DD) only I, II, and III
33Why does the U.S. population continue to grow even though the United States has essentially established a zero population growth (ZPG)?
- AA) emigration
- BB) immigration
- CC) baby boomer reproduction
- DD) the 2007-2009 economic recession
34A recent study of ecological footprints concluded that ________.
- AA) Earth's carrying capacity would increase if per capita meat consumption increased
- BB) current demand by industrialized countries for resources is much smaller than the ecological footprint of those countries
- CC) it is not possible for technological improvements to increase Earth's carrying capacity for humans
- DD) the ecological footprint of the United States is large because per capita resource use is high
35Which of the following statements about human population in industrialized countries are correct?
I) Life history is r-selected.
II) The population has undergone the demographic transition.
III) The survivorship curve is Type III.
IV) Age distribution is relatively uniform.- AA) only I and III
- BB) only II and IV
- CC) only I, II, and IV
- DD) only II, III, and IV
36Population ecologists follow the fate of same-age cohorts to
- AA) determine a population's carrying capacity.
- BB) determine the birth rate and death rate of each group in a population.
- CC) determine if a population is regulated by density-dependent processes.
- DD) determine the factors that affect the size of a population.
37A population's carrying capacity
- AA) may change as environmental conditions change.
- BB) can be accurately calculated using the logistic growth model.
- CC) increases as the per capita population growth rate decreases.
- DD) can never be exceeded.
38Scientific study of the population cycles of the snowshoe hare and its predator, the lynx, has revealed that
- AA) predation is the dominant factor affecting prey population cycling.
- BB) hares and lynx are so mutually dependent that each species cannot survive without the other.
- CC) both hare and lynx population sizes are affected mainly by abiotic factors.
- DD) the hare population is r-selected and the lynx population is K-selected.
39Analyzing ecological footprints reveals that
- AA) Earth's carrying capacity would increase if per capita meat consumption increased.
- BB) current demand by industrialized countries for resources is much smaller than the ecological footprint of those countries.
- CC) it is not possible for technological improvements to increase Earth's carrying capacity for humans.
- DD) the ecological footprint of the United States is large because per capita resource use is high.
40Based on current growth rates, Earth's human population in 2019 will be closest to
- AA) 2.5 million.
- BB) 4.5 billion.
- CC) 7.5 billion.
- DD) 10.5 billion.
41The observation that members of a population are uniformly distributed suggests that
- AA) resources are distributed unevenly.
- BB) the members of the population are competing for access to a resource.
- CC) the members of the population are neither attracted to nor repelled by one another.
- DD) the density of the population is low.
42According to the logistic growth equation below,
dN/dt = rN((K-N)/K)- AA) the number of individuals added per unit time is greatest when N is close to zero.
- BB) the per capita population growth rate increases as N approaches K.
- CC) population growth is zero when N equals K.
- DD) the population grows exponentially when K is small.
43During exponential growth, a population always
- AA) has a constant per capita population growth rate.
- BB) quickly reaches its carrying capacity.
- CC) cycles through time.
- DD) loses some individuals to emigration.
44Which of the following statements about human populations in industrialized countries is incorrect?
- AA) Birth rates and death rates are high.
- BB) Average family size is relatively small.
- CC) The population has undergone the demographic transition.
- DD) The survivorship curve is Type I.
Information
- Description
- Biology Quiz on Bio Exam 4 Chapter 53, created by Hannah Moore on 10/04/2018.
- Author
- Hannah Moore
- Language
- English
- Views
- 69
- Tags
- Rating
- No ratings yet Rate this quiz