Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 56, Problem 6TY
Summary Introduction
Introduction: The change in
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A population that grew in close relation to the amount of resources available in the environment, would experience
A. exponential growth, such as shown on the J-shaped curve
B. logistic growth, such as shown on the S-shaped curve
C. unpredictable growth, such as shown on the ?-shaped curve
D.logistic growth, such as shown on the J-shaped curve
E. exponential growth, such as shown on the S-shaped curve
Which of the following formulae describes logistic population growth?
Group of answer choices
a. dN/dt = rN((K-N)/K)
b. dN/dt = rN
c. p+q=1
d. rb>c
A population that did not grow in close relation to the amount of resources available in the environment, and dramatically overshot the carrying capacity, would experience:
A. logistic growth, such as shown on the S-shaped curve
B. exponential growth, such as shown on the J-shaped curve
C. unpredictable growth, such as shown on the ?-shaped curve
D. exponential growth, such as shown on the S-shaped curve
E.logistic growth, such as shown on the J-shaped curve
Chapter 56 Solutions
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- Use this graph of the idealized exponential and logistic growth curves to complete the following. a. Label the axes and curves on the graph.b. What does the dotted line represent? c. For each curve, indicate and explain where population growth is the most rapid. d. Which of these curves better represents global human population growth?arrow_forwardWhen an environment has reached its carying capacity for a certain population, which of the following is true? A. Growth and immigration rate is equal to death and emigration rate. B. Growth and immigration rate is greater than death and emigration rate. C. Growth and immigration rate is less than death and emigration rate. D. Growth rate is exponential. Answer Why do you believe this is the correct answer.arrow_forward(A) G= N K – N) K (C) (B) (х-аxis) Question: Which of the lines/curves best represents global human population growth? a. Curve B b. none c. Line C d. Curve A (y-axis)arrow_forward
- Which of the following is a plausible consequence of delayed density dependence in a population that would otherwise have logistic growth? A. Increased environmental stochasticity B. Dampened oscillations C. Population cycles D.Both B and C E. None of the above result from delayed density dependencearrow_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_forwardA region of North America has a population of 65,000 deer in 2016. The deer are kept in check by a wolf population. The carrying capacity of this region allows for 82,000 deer. For this example, assume the rmax is 1.0. With this information, answer/calculate the following:arrow_forward
- The major disadvantage of crude rates is that: A. they may not allow for comparison of populations that differ in size. B. they do not permit comparison of populations that vary in composition. C. they are difficult to calculate from available data sources. D. all of the abovearrow_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_forwardWhat 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_forward
- 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.arrow_forwarda) The region numbered 3 on the graph represents the __A__ brought on by the limiting factors called __B___. Select one: a. A B Carrying capacity Environmental resistance b. A B Environmental resistance Exponential growth c. A B Exponential growth Lag phase d. A B Lag phase Carrying capacity b) The region of the graph that illustrates the exponential growth of a population and the type of graph illustrated are, respectively: Select one: a. Exponential Growth Type of Graph 4 S-shaped b. Exponential Growth Type of Graph 2 Logistic c. Exponential Growth Type of Graph 3 J-Shaped d. Exponential Growth Type of Graph 1 Exponential c) What do the regions numbered 2 and 4 on the graph represent? Select one: a. Region #2 Region #4 Immigration and birth rate is less than emigration and death rate. Emigration and death rate is less than immigration and birth rate. b. Region #2…arrow_forwardUnder logistic population growth what happens as N becomes similar in size to K? Group of answer choices a. population growth speeds up b. K shrinks c. K expands d. population growth approaches zero e. population growth becomes negativearrow_forward
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