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 E

Question 2

An island has formed off the coast of the Pacific Northwest.The Department of Natural Resources (DNR) has determined that there is enough land area for a herd of 100 elk, yet they say the carrying capacity is only 60 elk.This inequality can best be explained by the fact that the

Accepted Answer

A) DNR is probably being careful not to overestimate 
B) DNR must have added up the environmental resistance incorrectly 
C) Elk population will probably fluctuate between 60 and 100 animals 
D) Physical factor of space is only one of the determiners for population size in a community 
E) Law of limiting factors determines the maximum growth rate for a given population 
A) DNR is probably being careful not to overestimate 
B) DNR must have added up the environmental resistance incorrectly 
C) Elk population will probably fluctuate between 60 and 100 animals 
D) Physical factor of space is only one of the determiners for population size in a community 
E) Law of limiting factors determines the maximum growth rate for a given population D

Question 3

A dieback or population crash, often occurs after a species ________ its environmental carrying capacity.

Accepted Answer

A) Meets 
B) Undershoots 
C) Overshoots 
D) Oscillates around 
E) Decreases 
A) Meets 
B) Undershoots 
C) Overshoots 
D) Oscillates around 
E) Decreases C

Question 4

The world's most destructive insect is the cockroach.

Accepted Answer

A) True 
 B)False

Question 5

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 6

Which of the following types of population growth patterns would best represent a group of elephants that enter a new, open habitat and become a stable part of that ecosystem?

Accepted Answer

A) Exponential growth 
B) Irruptive growth 
C) Malthusian growth 
D) Chaotic or catastrophic growth 
E) Logistic growth 
A) Exponential growth 
B) Irruptive growth 
C) Malthusian growth 
D) Chaotic or catastrophic growth 
E) Logistic growth

Question 7

An organism with ___________ "strategies" would be considered to have __________ natality.

Accepted Answer

A) K-adapted; high 
B) R-adapted; high 
C) K-adapted; low 
D) R-adapted; low 
E) R-adapted; high AND K-adapted 
A) K-adapted; high 
B) R-adapted; high 
C) K-adapted; low 
D) R-adapted; low 
E) R-adapted; high AND K-adapted

Question 8

Carrying capacity is the population or biomass

Accepted Answer

A) That an environment can support in an optimal year 
B) Of a species that an environment can support on a long-term basis 
C) That remains after a catastrophic dieback has occurred 
D) Of a species without limiting factors 
E) Of a species without predators 
A) That an environment can support in an optimal year 
B) Of a species that an environment can support on a long-term basis 
C) That remains after a catastrophic dieback has occurred 
D) Of a species without limiting factors 
E) Of a species without predators

Question 9

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 10

Genetic diversity is lost in a small population when

Accepted Answer

A) The ecological diversity is high 
B) Genetic mutations cause some individuals in a population to be different in coloration or size 
C) Individuals from other populations are introduced into the population and the genes are diluted 
D) Only a few individuals survive a catastrophe 
E) Genetic mutations cause most individuals in a population to have similar genetic makeup 
A) The ecological diversity is high 
B) Genetic mutations cause some individuals in a population to be different in coloration or size 
C) Individuals from other populations are introduced into the population and the genes are diluted 
D) Only a few individuals survive a catastrophe 
E) Genetic mutations cause most individuals in a population to have similar genetic makeup

Question 11

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 12

Use the following information. DNA studies suggest that all existing cheetahs share a single male ancestor that survived in the not-too-distant past. Generally, all male cheetahs are now nearly genetically identical and have abnormal sperm with decreased reproductive success. The population is extremely vulnerable and genetically, may be headed for extinction.
-The first part of this scenario describes

Accepted Answer

A) The founder effect or a demographic bottleneck 
B) Inbreeding 
C) Malthusian strategies 
D) Inbreeding or a genetic drift 
A) The founder effect or a demographic bottleneck 
B) Inbreeding 
C) Malthusian strategies 
D) Inbreeding or a genetic drift

Question 13

Which of the following types of population curves would best represent a group of elephants that enter a new, open habitat and become a stable part of that ecosystem?

Accepted Answer

A) Norm-shaped curve 
B) S-shaped curve 
C) J-shaped curve 
D) Cyclic oscillation-shaped curve 
E) Survivorship curve 
A) Norm-shaped curve 
B) S-shaped curve 
C) J-shaped curve 
D) Cyclic oscillation-shaped curve 
E) Survivorship curve

Question 14

In the real world, many factors determine the numbers of organisms in any one population.Yet, a "superfly" with unlimited food and no mortality would show what type of growth?

Accepted Answer

A) Geometric increase 
B) Irruptive growth 
C) Exponential growth 
D) Logistic growth 
E) Malthusian growth 
A) Geometric increase 
B) Irruptive growth 
C) Exponential growth 
D) Logistic growth 
E) Malthusian growth

Question 15

An organism's biotic potential is the maximum number of offspring that _________.

Accepted Answer

A) survive to adulthood 
B) Its habitat can support 
C) It produces at one time 
D) It actually produces over its lifetime 
A) survive to adulthood 
B) Its habitat can support 
C) It produces at one time 
D) It actually produces over its lifetime

Question 16

Natality is usually

Accepted Answer

A) Constant in a population 
B) Constant for a species 
C) Constant in an ecosystem 
D) Variable, depending on the number of recent deaths 
E) Variable, depending on environmental conditions 
A) Constant in a population 
B) Constant for a species 
C) Constant in an ecosystem 
D) Variable, depending on the number of recent deaths 
E) Variable, depending on environmental conditions

Question 17

The highest number of game or commercial species that can be harvested in a single season without limiting growth for future seasons is the maximal sustainable yield.

Accepted Answer

A) True 
 B)False

Question 18

_____________ growth rate describes a predictable rate of change at discrete points in time.

Accepted Answer

A) Feedback 
B) Logistic 
C) Exponential 
D) Geometric 
E) Overshoot 
A) Feedback 
B) Logistic 
C) Exponential 
D) Geometric 
E) Overshoot

Question 19

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 20

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

Exam 6: Population Biology

In the real world, population explosion is usually followed by

An island has formed off the coast of the Pacific Northwest.The Department of Natural Resources (DNR) has determined that there is enough land area for a herd of 100 elk, yet they say the carrying capacity is only 60 elk.This inequality can best be explained by the fact that the

A dieback or population crash, often occurs after a species ________ its environmental carrying capacity.

The world's most destructive insect is the cockroach.

Life expectancy is the

Which of the following types of population growth patterns would best represent a group of elephants that enter a new, open habitat and become a stable part of that ecosystem?

An organism with ___________ "strategies" would be considered to have __________ natality.

Carrying capacity is the population or biomass

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

Genetic diversity is lost in a small population when

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

Which of the following types of population curves would best represent a group of elephants that enter a new, open habitat and become a stable part of that ecosystem?

In the real world, many factors determine the numbers of organisms in any one population.Yet, a "superfly" with unlimited food and no mortality would show what type of growth?

An organism's biotic potential is the maximum number of offspring that _________.

Natality is usually

The highest number of game or commercial species that can be harvested in a single season without limiting growth for future seasons is the maximal sustainable yield.

_____________ growth rate describes a predictable rate of change at discrete points in time.

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.

Which of the following is an abiotic population control mechanism?

Understanding Our Environment

Principles of Science and Systems

Matter, Energy, and Life

Evolution, Biological Communities, and Species Interactions

Biomes

Human Populations

Environmental Health and Toxicology

Food and Hunger

Farming: Conventional and Sustainable Practices

Biodiversity

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

An organism with _ "strategies" would be considered to have natality.

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

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