Question 1

In the real world, population explosion is usually followed by

Accepted Answer

A)  A continuation of high population levels indefinitely 
B)  A gradual decrease in population as food supplies dwindle 
C)  A tremendous increase in genetic diversity 
D)  A gradual increase in population due to the availability of mates 
E)  A population crash 
A)  A continuation of high population levels indefinitely 
B)  A gradual decrease in population as food supplies dwindle 
C)  A tremendous increase in genetic diversity 
D)  A gradual increase in population due to the availability of mates 
E)  A population crash

Question 2

Which of the following is not a density-dependent population control factor?

Accepted Answer

A)  Stress 
B)  Overcrowding 
C)  Predation 
D)  Drought 
E)  Competition 
A)  Stress 
B)  Overcrowding 
C)  Predation 
D)  Drought 
E)  Competition

Question 3

When a population overshoots its carrying capacity, resources become limited and death rates rise.

Accepted Answer

A) True 
 B)False

Question 4

A metapopulation is one in which genetic diversity is much reduced.

Accepted Answer

A) True 
 B)False

Question 5

When the similarities in population increases and decreases in prey and predators, it lead us to the conclusion that

Accepted Answer

A)  The abundance of only the prey species can affect another species. 
B)  The abundance of only the predator species can affect another species. 
C)  The abundance of both the prey and predator can affect the other species. 
D)  There is no relationship between the abundances of predator and prey species. 
A)  The abundance of only the prey species can affect another species. 
B)  The abundance of only the predator species can affect another species. 
C)  The abundance of both the prey and predator can affect the other species. 
D)  There is no relationship between the abundances of predator and prey species.

Question 6

The term "fecundity" refers to an organism's ____________ while fertility is ______________.

Accepted Answer

A)  Physical ability to reproduce; the actual number of offspring produced 
B)  Actual number of offspring produced; the physical ability to reproduce 
C)  Average life span; the physical ability to reproduce 
D)  Replacement level of reproduction; the actual number of offspring produced 
E)  Physical ability to reproduce; the replacement level of reproduction 
A)  Physical ability to reproduce; the actual number of offspring produced 
B)  Actual number of offspring produced; the physical ability to reproduce 
C)  Average life span; the physical ability to reproduce 
D)  Replacement level of reproduction; the actual number of offspring produced 
E)  Physical ability to reproduce; the replacement level of reproduction

Question 7

Island biogeography explains the phenomenon of _______ terrestrial species on islands small and far from the mainland when compared to larger islands that are closer to the mainland and have __________ terrestrial species.

Accepted Answer

A)  Fewer; more 
B)  More; fewer 
C)  Larger; smaller 
D)  Smaller; larger 
E)  Larger; about the same number of 
A)  Fewer; more 
B)  More; fewer 
C)  Larger; smaller 
D)  Smaller; larger 
E)  Larger; about the same number of

Question 8

Life expectancy is the

Accepted Answer

A)  Maximum life span that an individual of a given species could reach 
B)  Number of individuals in a population that survive in a given year 
C)  Number of years an individual of a certain age will probably live 
D)  Probability that an individual will survive infancy 
E)  All of these are descriptions of life expectancy 
A)  Maximum life span that an individual of a given species could reach 
B)  Number of individuals in a population that survive in a given year 
C)  Number of years an individual of a certain age will probably live 
D)  Probability that an individual will survive infancy 
E)  All of these are descriptions of life expectancy

Question 9

Explosive growth better characterizes logistic growth than exponential growth.

Accepted Answer

A) True 
 B)False

Question 10

A graph of a population growing at a positive constant rate would most resemble a

Accepted Answer

A)  straight horizontal line. 
B)  rising straight line. 
C)  J-shaped curve. 
D)  straight vertical line. 
A)  straight horizontal line. 
B)  rising straight line. 
C)  J-shaped curve. 
D)  straight vertical line.

Question 11

Which of the following is an intraspecific interaction?

Accepted Answer

A)  Mutualism 
B)  Territoriality 
C)  Parasitism 
D)  Predation 
E)  All of these are examples of intraspecific interactions 
A)  Mutualism 
B)  Territoriality 
C)  Parasitism 
D)  Predation 
E)  All of these are examples of intraspecific interactions

Question 12

The carrying capacity of a habitat refers to

Accepted Answer

A)  the strength or resilience of the population. 
B)  the number of animals that the habitat can support. 
C)  the amount of rainfall that the habitat receives annually. 
D)  None of these choices are correct 
A)  the strength or resilience of the population. 
B)  the number of animals that the habitat can support. 
C)  the amount of rainfall that the habitat receives annually. 
D)  None of these choices are correct

Question 13

Which of the following is an abiotic population control mechanism?

Accepted Answer

A)  Predation 
B)  Disease 
C)  Water shortages 
D)  Prey shortages 
E)  Competition 
A)  Predation 
B)  Disease 
C)  Water shortages 
D)  Prey shortages 
E)  Competition

Question 14

Weeds most commonly exhibit which population growth characteristic?

Accepted Answer

A)  r selected 
B)  K selected 
C)  A pattern that appears as a J-curve on a graph 
D)  r selected and a pattern that appears as a J-curve on a graph 
E)  K selected and a pattern that appears as a J-curve on a graph 
A)  r selected 
B)  K selected 
C)  A pattern that appears as a J-curve on a graph 
D)  r selected and a pattern that appears as a J-curve on a graph 
E)  K selected and a pattern that appears as a J-curve on a graph

Question 15

You are studying an organism that is an opportunistic pioneer species and does not care for its offspring. This organism probably has a(n) _________________ population growth strategy.

Accepted Answer

A)  K-adapted 
B)  R-adapted 
C)  Irregular 
D)  Catastrophic 
E)  R-adapted and irregular 
A)  K-adapted 
B)  R-adapted 
C)  Irregular 
D)  Catastrophic 
E)  R-adapted and irregular

Question 16

In general, abiotic regulatory factors tend to be ___________ while biotic factors tend to be _____________.

Accepted Answer

A)  Interspecific; intraspecific 
B)  Intraspecific; interspecific 
C)  Density-dependent; density-independent 
D)  Density-independent; density-dependent 
E)  Interspecific; density-independent 
A)  Interspecific; intraspecific 
B)  Intraspecific; interspecific 
C)  Density-dependent; density-independent 
D)  Density-independent; density-dependent 
E)  Interspecific; density-independent

Question 17

Which of the following is a biotic population control mechanism?

Accepted Answer

A)  Nutrients 
B)  Precipitation 
C)  Day length 
D)  Climate 
E)  Pathogens 
A)  Nutrients 
B)  Precipitation 
C)  Day length 
D)  Climate 
E)  Pathogens

Question 18

The world's most destructive insect is the cockroach.

Accepted Answer

A) True 
 B)False

Question 19

Survivorship is determined by

Accepted Answer

A)  The percentage of a cohort that survives to a certain age 
B)  The number of individuals in a population that survive in a given year 
C)  The number of years an individual of a certain age will probably live 
D)  The probability that an individual will survive infancy 
E)  The maximum life span that an individual of a given species could reach 
A)  The percentage of a cohort that survives to a certain age 
B)  The number of individuals in a population that survive in a given year 
C)  The number of years an individual of a certain age will probably live 
D)  The probability that an individual will survive infancy 
E)  The maximum life span that an individual of a given species could reach

Question 20

Exponential growth would be represented by a ____ curve?

Accepted Answer

A)  J-shaped 
B)  S-shaped 
C)  straight 
D)  bimodal 
E)  linear 
A)  J-shaped 
B)  S-shaped 
C)  straight 
D)  bimodal 
E)  linear

Exam 6: Population Biology

In the real world, population explosion is usually followed by

Which of the following is not a density-dependent population control factor?

When a population overshoots its carrying capacity, resources become limited and death rates rise.

A metapopulation is one in which genetic diversity is much reduced.

When the similarities in population increases and decreases in prey and predators, it lead us to the conclusion that

The term "fecundity" refers to an organism's ____________ while fertility is ______________.

Island biogeography explains the phenomenon of _______ terrestrial species on islands small and far from the mainland when compared to larger islands that are closer to the mainland and have __________ terrestrial species.

Life expectancy is the

Explosive growth better characterizes logistic growth than exponential growth.

A graph of a population growing at a positive constant rate would most resemble a

Which of the following is an intraspecific interaction?

The carrying capacity of a habitat refers to

Which of the following is an abiotic population control mechanism?

Weeds most commonly exhibit which population growth characteristic?

You are studying an organism that is an opportunistic pioneer species and does not care for its offspring. This organism probably has a(n) _________________ population growth strategy.

In general, abiotic regulatory factors tend to be ___________ while biotic factors tend to be _____________.

Which of the following is a biotic population control mechanism?

The world's most destructive insect is the cockroach.

Survivorship is determined by

Exponential growth would be represented by a ____ curve?

Understanding Our Environment

Principles of Science and Systems

Matter, Energy, and Life

Evolution, Biological Communities, and Species Interactions

Biomes: Global Patterns of Life

Human Populations

Environmental Health and Toxicology

Food and Hunger

Farming: Conventional and Sustainable Practices

Biodiversity: Preserving Species

Biodiversity: Preserving Landscapes

Restoration Ecology

Geology and Earth Resources

Climate Change

Air Pollution

Water Use and Management

Water Pollution

Conventional Energy

Sustainable Energy

Solid, Toxic, and Hazardous Waste

Urbanization and Sustainable Cities

Ecological Economics

Environmental Policy, Law, and Planning

What Then Shall We Do

Filters

The term "fecundity" refers to an organism's while fertility is __.

Island biogeography explains the phenomenon of _ terrestrial species on islands small and far from the mainland when compared to larger islands that are closer to the mainland and have ____ terrestrial species.

In general, abiotic regulatory factors tend to be _ while biotic factors tend to be ___.