Question 1

In nature,populations tend to experience unpredicted rises and falls in population size.This type of change is called a(n)________.

Accepted Answer

irregular

Question 2

The decrease in the availability of food or cover that accompanies increasing population size illustrates the concept of a(n)________ factor.

Accepted Answer

A)  density-dependent 
B)  density-independent 
C)  exponential growth 
D)  logistic growth 
A)  density-dependent 
B)  density-independent 
C)  exponential growth 
D)  logistic growth

Question 3

A population of 100 individuals is undergoing exponential growth with a population doubling time of 1 year.What size will this population be in 2 years?

Accepted Answer

A)  100 
B)  150 
C)  200 
D)  400 
A)  100 
B)  150 
C)  200 
D)  400

Question 4

Match each term to a statement listed below.
-unlimited growth of a population with no constraint on resources

Accepted Answer

A) population size 
B) population density 
C) carrying capacity 
D) logistic growth 
E) exponential growth 
A) population size 
B) population density 
C) carrying capacity 
D) logistic growth 
E) exponential growth

Question 5

Match each term to a statement listed below.
-the maximum sustainable population size in a given environment

Accepted Answer

A) population size 
B) population density 
C) carrying capacity 
D) logistic growth 
E) exponential growth 
A) population size 
B) population density 
C) carrying capacity 
D) logistic growth 
E) exponential growth

Question 6

For most populations,irregular fluctuations in size or density

Accepted Answer

A)  are less commonly experienced than the smooth J-shaped growth curve. 
B)  occur commonly before carrying capacity is reached. 
C)  are more common than the smooth J-shaped growth curve. 
D)  occur only when density-independent factors dominate. 
A)  are less commonly experienced than the smooth J-shaped growth curve. 
B)  occur commonly before carrying capacity is reached. 
C)  are more common than the smooth J-shaped growth curve. 
D)  occur only when density-independent factors dominate.

Question 7

Match each term to a statement listed below.
-number of individuals within a population per unit of area

Accepted Answer

A) population size 
B) population density 
C) carrying capacity 
D) logistic growth 
E) exponential growth 
A) population size 
B) population density 
C) carrying capacity 
D) logistic growth 
E) exponential growth

Question 8

Which of the following populations would be MOST likely to experience a J-shaped growth pattern?

Accepted Answer

A)  all of the animals in the San Diego Zoo 
B)  single-celled Paramecia without a constant food supply 
C)  a founding colony of rats on a small island with abundant resources 
D)  a beehive infected midsummer with a deadly bacterial disease 
A)  all of the animals in the San Diego Zoo 
B)  single-celled Paramecia without a constant food supply 
C)  a founding colony of rats on a small island with abundant resources 
D)  a beehive infected midsummer with a deadly bacterial disease

Question 9

The definition of an area,relative to a population study,

Accepted Answer

A)  is constant. 
B)  is always 1 square meter. 
C)  depends on the questions being asked. 
D)  depends on whether the area is terrestrial or aquatic. 
A)  is constant. 
B)  is always 1 square meter. 
C)  depends on the questions being asked. 
D)  depends on whether the area is terrestrial or aquatic.

Question 10

The figure below shows that the human population was small and relatively stable for nearly 12,000 years but has increased dramatically in the past 200 years.How might this increase in population growth be explained?

Accepted Answer

A)  Disease prevented any significant growth of the human population. 
B)  For most of human history people were too malnourished to have children. 
C)  People simply chose to have fewer children in the past than at present. 
D)  Prior human populations were at existing carrying capacities, but newly developed technologies have raised the carrying capacity and permitted the recent expansion. 
A)  Disease prevented any significant growth of the human population. 
B)  For most of human history people were too malnourished to have children. 
C)  People simply chose to have fewer children in the past than at present. 
D)  Prior human populations were at existing carrying capacities, but newly developed technologies have raised the carrying capacity and permitted the recent expansion.

Question 11

The term "population density" describes the

Accepted Answer

A)  body size of different species. 
B)  number of individuals per unit area. 
C)  number of populations per unit area. 
D)  number of species per unit area. 
A)  body size of different species. 
B)  number of individuals per unit area. 
C)  number of populations per unit area. 
D)  number of species per unit area.

Question 12

According to the figure shown below,human populations began to experience exponential growth around

Accepted Answer

A)  160,000 BCE. 
B)  1800. 
C)  1945. 
D)  2005. 
A)  160,000 BCE. 
B)  1800. 
C)  1945. 
D)  2005.

Question 13

A population is counted at 100 individuals in 1998.In 2006,a new count found 1,600 individuals.The doubling time for the population is ________ year(s).

Accepted Answer

A)  0.5 
B)  1 
C)  1.5 
D)  2 
A)  0.5 
B)  1 
C)  1.5 
D)  2

Question 14

Your friend is planning a trip to Africa.She mentions to you that that she is more worried about contracting sleeping sickness than she is worried about contracting mosquito-transmitted malaria after watching a TV show highlighting sleeping sickness.Based on the image below indicating the rank of the 15 deadliest animals,is her fear fact-based?

Accepted Answer

Mosquitoes are responsible for

Question 15

Match between columns
                        Premises: A population of hares increases when the population of lynxes in the same area decreases.
A wildfire sweeps through a forest and kills 90 percent of the oak trees.
An insecticide used to reduce mosquito populations indirectly decreases bald eagle populations.
Yeast cells fill a broth-filled flask, resources become constrained, and growth is limited.
A virus spreads through a population of wild dogs and 20 percent of the dogs die.

Accepted Answer

The Answer of density-dependent population change and density-independent population change is...

Question 16

The carrying capacity of owls in an Alaskan forest is seven per square kilometer.What will happen if 12 owls are confined to a 1-square-kilometer area?

Accepted Answer

A)  The owls will survive together and develop ways to share resources. 
B)  The owls might survive but the population size in the future will most likely be close to seven. 
C)  The population of owl prey organisms will increase proportionately to support a larger population of owls. 
D)  A short-term exponential growth of owls will occur because more mating pairs will form. 
A)  The owls will survive together and develop ways to share resources. 
B)  The owls might survive but the population size in the future will most likely be close to seven. 
C)  The population of owl prey organisms will increase proportionately to support a larger population of owls. 
D)  A short-term exponential growth of owls will occur because more mating pairs will form.

Question 17

Predation increases are responsible for density-________ changes in population size.

Accepted Answer

The answer of Predation increases are responsible for density-________ changes...

Question 18

A population will remain at a constant size when emigration equals immigration and

Accepted Answer

A)  food is not a limiting factor. 
B)  births equal deaths. 
C)  predators leave the area. 
D)  available space remains the same. 
A)  food is not a limiting factor. 
B)  births equal deaths. 
C)  predators leave the area. 
D)  available space remains the same.

Question 19

According to the figure below,human populations are projected to reach carrying capacity in approximately ________ years.

Accepted Answer

A)  30 
B)  75 
C)  85 
D)  105 
A)  30 
B)  75 
C)  85 
D)  105

Question 20

Which of the following would likely occur as a population reaches carrying capacity?

Accepted Answer

A)  Density-independent deaths would increase. 
B)  Density-dependent deaths would increase. 
C)  Use of resources, such as food and space, would decrease. 
D)  Birth rates would increase to maintain population size. 
A)  Density-independent deaths would increase. 
B)  Density-dependent deaths would increase. 
C)  Use of resources, such as food and space, would decrease. 
D)  Birth rates would increase to maintain population size.

In nature,populations tend to experience unpredicted rises and falls in population size.This type of change is called a(n)________.

The decrease in the availability of food or cover that accompanies increasing population size illustrates the concept of a(n)________ factor.

A population of 100 individuals is undergoing exponential growth with a population doubling time of 1 year.What size will this population be in 2 years?

Match each term to a statement listed below. -unlimited growth of a population with no constraint on resources

Match each term to a statement listed below. -the maximum sustainable population size in a given environment

For most populations,irregular fluctuations in size or density

Match each term to a statement listed below. -number of individuals within a population per unit of area

Which of the following populations would be MOST likely to experience a J-shaped growth pattern?

The definition of an area,relative to a population study,

The figure below shows that the human population was small and relatively stable for nearly 12,000 years but has increased dramatically in the past 200 years.How might this increase in population growth be explained?

The term "population density" describes the

According to the figure shown below,human populations began to experience exponential growth around

A population is counted at 100 individuals in 1998.In 2006,a new count found 1,600 individuals.The doubling time for the population is ________ year(s).

The carrying capacity of owls in an Alaskan forest is seven per square kilometer.What will happen if 12 owls are confined to a 1-square-kilometer area?

Predation increases are responsible for density-________ changes in population size.

A population will remain at a constant size when emigration equals immigration and

According to the figure below,human populations are projected to reach carrying capacity in approximately ________ years.

Which of the following would likely occur as a population reaches carrying capacity?

The Nature of Science

Evaluating Scientific Claims

Chemistry of Life

Life Is Cellular

How Cells Work

Cell Division

Patterns of Inheritance

Chromosomes and Human Genetics

What Genes Are

How Genes Work

Evidence for Evolution

Mechanisms of Evolution

Adaptation and Species

The History of Life

Bacteria and Archaea

Plants, Fungi, and Protists

Animals and Human Evolution

General Principles of Ecology

Communities of Organisms

Ecosystems

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Exam 19: Growth of Populations

In nature,populations tend to experience unpredicted rises and falls in population size.This type of change is called a(n)________.

The decrease in the availability of food or cover that accompanies increasing population size illustrates the concept of a(n)________ factor.

A population of 100 individuals is undergoing exponential growth with a population doubling time of 1 year.What size will this population be in 2 years?

Match each term to a statement listed below. -unlimited growth of a population with no constraint on resources

Match each term to a statement listed below. -the maximum sustainable population size in a given environment

For most populations,irregular fluctuations in size or density

Match each term to a statement listed below. -number of individuals within a population per unit of area

Which of the following populations would be MOST likely to experience a J-shaped growth pattern?

The definition of an area,relative to a population study,

The figure below shows that the human population was small and relatively stable for nearly 12,000 years but has increased dramatically in the past 200 years.How might this increase in population growth be explained?

The term "population density" describes the

According to the figure shown below,human populations began to experience exponential growth around

A population is counted at 100 individuals in 1998.In 2006,a new count found 1,600 individuals.The doubling time for the population is ________ year(s).

The carrying capacity of owls in an Alaskan forest is seven per square kilometer.What will happen if 12 owls are confined to a 1-square-kilometer area?

Predation increases are responsible for density-________ changes in population size.

A population will remain at a constant size when emigration equals immigration and

According to the figure below,human populations are projected to reach carrying capacity in approximately ________ years.

Which of the following would likely occur as a population reaches carrying capacity?

The Nature of Science

Evaluating Scientific Claims

Chemistry of Life

Life Is Cellular

How Cells Work

Cell Division

Patterns of Inheritance

Chromosomes and Human Genetics

What Genes Are

How Genes Work

Evidence for Evolution

Mechanisms of Evolution

Adaptation and Species

The History of Life

Bacteria and Archaea

Plants, Fungi, and Protists

Animals and Human Evolution

General Principles of Ecology

Communities of Organisms

Ecosystems

Filters