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 53, Problem 7IQ
What do the age structure pyramids in Figure 53.24 in the textbook predict for the future population growth of Afghanistan and Italy?
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This graph plots the difference between birth rates and death rates
in Mexico during the 20th century. During which quarter century did
Mexico experience the greatest rate of population growth?
a) 1900–1925
50
b) 1925–1950
40
c) 1950–1975
Rate of
30
increase
d) 1975–2000
20
Birth rate
Death rate
10
1900
1925 1950 1975
2000
2025
2050
Year
Adapted from Transitions in World Population, Population Bulletin 59: 1 (2004).
© 2018 Pearson Education, Inc.
Birth or death rate
per 1,000 population
How did the population growth curve with low migration compare with the normal population growth curve? (compare one shape of the curves) how did population growth with high migration compare with goal population growth curve? (compare the shape of the curves)
Draw the general shape of age structure diagrams characteristic of (a) expanding, (b) stable, and (c) shrinking populations. Label all the axes. Explain why you can predict the next several decades of growth by the current age structure of populations.
Chapter 53 Solutions
Study Guide for Campbell Biology
Ch. 53 - In a mark-recapture study, an ecologist traps,...Ch. 53 - Prob. 2IQCh. 53 - Define r. How does r relate to exponential growth?Ch. 53 - Label the following exponential and logistic...Ch. 53 - Prob. 5IQCh. 53 - a. List some density-dependent factors that may...Ch. 53 - What do the age structure pyramids in Figure 53.24...Ch. 53 - Create a concept map to organize your...Ch. 53 - What is the best collection of life history traits...Ch. 53 - In an area with a heterogeneous distribution of...
Ch. 53 - Which of the following statements about life...Ch. 53 - Prob. 3TYKCh. 53 - The middle of the S-shaped growth curve in the...Ch. 53 - In the logistic growth equation, which term...Ch. 53 - The term (K N)/K a. is the carrying capacity for...Ch. 53 - The carrying capacity for a population is...Ch. 53 - In order to maintain the largest sustainable fish...Ch. 53 - Immigration and emigration are likely to play a...Ch. 53 - Chimpanzee females typically first give birth at...Ch. 53 - Which of the following factors is not a...Ch. 53 - Consider a population experiencing negative...Ch. 53 - You have introduced a small number of individuals...Ch. 53 - Prob. 14TYKCh. 53 - Prob. 15TYKCh. 53 - In a population showing exponential growth, what...Ch. 53 - As a population approaches zero population growth,...Ch. 53 - For a population showing exponential growth, how...Ch. 53 - The human population is growing at such a fast...Ch. 53 - The demographic transition is the gradual shift...Ch. 53 - An ecological footprint is an estimate of a. the...
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- How did population growth curve with LOW migration compare with the normal population growth curve? How did population growth curve with High migration compare with normal population growth curve?arrow_forwardWhat are the key factors that led to the changes in the birth rate and death rates as a country goes through the demographic transition? Describe in order that they occurred and how they affected the rates.arrow_forwardWhat factors contribute to the change in the shapes of the population pyramids in 1945 and 2050?arrow_forward
- What are the two key concepts for this section? Listthree variables that affect the growth and decline ofhuman populations. How can we calculate the population change of an area? Define the total fertilityrate (TFR). How has the global TFR changed since1955? Summarize the story of population growth inthe United States. List six changes in lifestyles thathave taken place in the United States during the 20thcentury, leading to a rise in per capita resource use.arrow_forwardThe per capita birth (b) and death (d) rates are measured for two populations across a range of population sizes in the attached figure. The equation for exponential growth rate is dN/dt=rN where the per capita growth rate is r=(b-d). The equation for logistic population growth rate is dN/dt=rN(1-N/K). With logistic growth, r varies as a function of the population size with density-dependent birth and/or death rates. See attached image If the death rate decreased, what would happen to the population trajectory for population A? a) increase faster b) increase slower c) decrease faster d) decrease slowerarrow_forwardIf each adult female powerful owl produces 1 female juvenile (F) each year, the adult survival rate (Sa) is 0.8, the juvenile survival rate (Sj) is 0.4, and the population is N2022=1400 adult females and 1400 juvenile females in 2022, what will be the female population size in 2027 (N2027)? Show your calculations. (hint: use excel to set up a model and check your work)arrow_forward
- What is shown in the graph? A) B) () D) 40,000 Population 0 exponential decay of a population exponential growth of a population arithmetic progression of a population an inverse relation between time and population Time 10 hrarrow_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_forwardThis figure plots the breeding populations of fur seals as they recovered from uncontrolled hunting. Based on this graph, what is the approximate carrying capacity of the fur seal's breeding habitat? 10 a) about 1,000 seals b) about 5,000 seals 6. c) about 10,000 seals 1915 1925 1935 1945 Year Data from K. W. Kenyon et al., A population study of the Alaska fur-seal herd, Federal Government Series: Special Scientific Report-Wildlife 12 (1954). © 2018 Pearson Education, Inc. Breeding male fur seals (thousands)arrow_forward
- The northern hairy-nosed wombat has experienced historical population declines, though population have stabilized recently due to conservation efforts. While studying them researchers noticed the following fluctuations in (effective) population size: Year 1: 100 individuals Year 2: 90 individuals Year 3: 50 individuals Year 4: 75 individuals Year 5: 90 individuals Year 6: 95 individuals A. Given this information what is the long-term effective population size of this particular population over the six years? B. Assume that at the start of the study the researchers determined heterozygosity for this population to be 0.63 at microsatellite loci. What would you expect the heterozygosity to be at the end of the six years? (Answer part B)arrow_forwardIn 2017, 16 bison were released into Elk Island National Park. Within the next five years, 49 more bison will be released into the 1,200 km2 area. During the study period, it is expected that 45 calves will be born and 13 bison will die or be removed from the study area. What is the expected per capita growth rate of the bison population during this study period? Express your answer rounded to two decimal places. If the population is decreasing indicate this with a negative sign.arrow_forwardMention any four probable reasons for the rapid rise of population in our country?arrow_forward
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