Campbell Biology Plus Mastering Biology with Pearson eText - Access Card Package (11th Edition)
11th Edition
ISBN: 9780134082318
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
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Chapter 53, Problem 8TYU
During exponential growth, a population always
- (A) has a constant per capita
population growth rate . - (B) quickly reaches its
carrying capacity . - (C) cycles through time.
- (D) loses some individuals to emigration.
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A) A population of 25 animals is growing exponentially, and the population has a
growth rate of 0.7. How big would the population be after 5 years?
B) What's the difference between exponential and logistic growth?
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You monitor the white-tailed deer population for the Wright State campus and woods and estimate 14 deer in the first year and 21 deer
in the second year.
(A) Assume the deer population is growing geometrically. Based on these data, what is geometric growth rate constant (A)?
(B) Geometric growth patterns can also be modeled exponentially. If modeled exponentially, would you expect the exponential growth
rate constant () to be greater than, less than, or equal to 0? Why?
You monitor the deer population for many years. The population grows for a few more years, then seems to stabilize around 75 deer.
(C) Given this information, what would be a more appropriate model for the deer population growth? Why?
(D) What factors might be limiting the population growth? Would these factors be considered density-dependent or density-
independent factors? Why?
it is equal to zero.
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(A) Check geometric growth…
Chapter 53 Solutions
Campbell Biology Plus Mastering Biology with Pearson eText - Access Card Package (11th Edition)
Ch. 53.1 - DRAW IT Each female of a particular fish species...Ch. 53.1 - Prob. 2CCCh. 53.1 - Prob. 3CCCh. 53.2 - Explain why a constant per capita rate of growth...Ch. 53.2 - Prob. 2CCCh. 53.2 - Prob. 3CCCh. 53.3 - Explain why a population that fits the logistic...Ch. 53.3 - WHAT IF? Given the latitudinal differences in...Ch. 53.3 - Prob. 3CCCh. 53.4 - Identify three key life history traits, and give...
Ch. 53.4 - Prob. 2CCCh. 53.4 - Prob. 3CCCh. 53.5 - Prob. 1CCCh. 53.5 - WHAT IF? Suppose you were studying a species that...Ch. 53.5 - Prob. 3CCCh. 53.6 - How does a human population's age structure affect...Ch. 53.6 - How have the rate and number of people added to...Ch. 53.6 - WHAT IF? Type "personal ecological footprint...Ch. 53 - Gray whales (Eschrichtius robustus) gather each...Ch. 53 - Suppose one population has an r that is twice as...Ch. 53 - Prob. 53.3CRCh. 53 - Prob. 53.4CRCh. 53 - Density-dependent factors regulate population...Ch. 53 - The human population is no longer growing...Ch. 53 - Population ecologists follow the fate of same-age...Ch. 53 - A population's carrying capacity (A) may change as...Ch. 53 - Scientific study of the population cycles of the...Ch. 53 - Analyzing ecological footprints reveals that (A)...Ch. 53 - Based on current growth rates, Earth's human...Ch. 53 - The observation that members of a population are...Ch. 53 - According to the logistic growth equation...Ch. 53 - During exponential growth, a population always (A)...Ch. 53 - Which of the following statements about human...Ch. 53 - Prob. 10TYUCh. 53 - EVOLUTION CONNECTION Contrast the selective...Ch. 53 - Prob. 12TYUCh. 53 - Prob. 13TYUCh. 53 - WRITE ABOUT A THEME: INTERACTIONS In a short essay...Ch. 53 - SYNTHESIZE YOUR KNOWLEDGE Locusts (grasshoppers in...
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- (8) One of the main factors cited for our "spectacular population growth" is (a) larger living spaces for members of the population (b) better opportunities for educational advancement (c) reduced carbon dioxide emissions (d) increased agricultural outputarrow_forwardDuring what phase of the growth curves in each diagram is the population just beginning to colonize an area? (C) a) Which type of population growth appears to continue unchecked? b) The growth curves in the Model are often referred to using the letters of the alphabet they resemble. The logistic growth curve is sometimes referred to as an S-curve. What letter would you use to describe the exponential growth curve? c) What causes the population to slow down during logistic growth? d) The maximum population an environment can sustain is affected by environmental factors that cause the population to level out or become stable. What term is used to describe this level of logistic growth? Diagram A-Exponential Growth Curve Population Numbers Exponential growth Lag phase Time Population Numbers Diagram B-Logistic Growth Curve Lag phase Time Carrying capacity (K) Pressure begins due to environmental resistancearrow_forwardA human population of 10,000 individuals has a birth rate of 90 per every 1000 persons and a death rate of 16 per every 1000 individuals. Calculate the yearly increase of the population growth. a) 740 individuals/year b) 74 individuals/year c) 10,074 individuals/year d) 11,074 individuals/yeararrow_forward
- Three characteristics of a population are the birth rate, growth rate, and death rate. How has each been affected by (a) modern medicine, (b) modern agriculture, and (c) modern industryarrow_forwardA highly developed country has a (a) long doubling time (b) low infant mortality rate (c) high GNI PPP per capita (d) a and b (e) a, b, and carrow_forwardThe global human population has surpassed 7 billion, far exceeding our population’s size throughout our history on Earth. Name some specific means by which we have apparently raised Earth’s carrying capacity for our species. Do you think we can continue to raise our carrying capacity? How might we do so? What limiting factors exist for the human population today? Might Earth’s future carrying capacity for us decrease? Why or why not?arrow_forward
- Which of the following is true of a population approaching its carrying capacity? a) The population’s emigration is greater than its immigration. b) The population has access to unlimited resources. c) Intraspecific competition decreases. d) The population’s rate of increase approaches zero.arrow_forwardGrowth rate of a population is determined by: A. The increase in the number of people per unit of time. B. The number of people being born minus the number of people dying. C. The number of children living per each two adults. D. The number of people times the number of children each one has per year.arrow_forwardWhich of the following populations would be growing? a) Geometric rate (1) = 0.63 b) Exponential growth rate (r) = 0.63 c) Net reproductive rate (R0) = 0.63 d) All of the above populations are growingarrow_forward
- In the logistic model of population growth, per capita growth rates are highest at __ densities and population growth rates are highest at ___ density (NOTE: assume ‘high’ refers to at or near K). A) low, intermediate B) low, low C) low, high D) None of the above are truearrow_forwardThe observation that members of a population are uniformlydistributed suggests that(A) resources are distributed unevenly.(B) the members of the population are competing for access toa resource.(C) the members of the population are neither attracted to norrepelled by one another.(D) the density of the population is lowarrow_forwardWhich of the following statements about exponential growth is FALSE? O a. Increases in the size of the population do not affect per capita rate of increase (r). Ca. b. Exponential growth adds a constant number of individuals per unit time to a population as N gets larger. C. In reality, it is not possible for exponential population growth to continue indefinitely. d. In an exponentially growing population, the % increase of the population per unit * time doesn't depend on the number of individuals (N) in the population.arrow_forward
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