Question 1

Describe the method used to assess moose population size on Isle Royale.

Accepted Answer

The population was assessed by flying ov

Question 2

Scientists studying mammals frequently analyze scat.Why?

Accepted Answer

Scat can reveal several things.Traces of

Question 3

Which is a density-dependent factor?

Accepted Answer

A)  predation 
B)  flooding 
C)  extremes of temperature 
D)  fire 
E)  drought 
A)  predation 
B)  flooding 
C)  extremes of temperature 
D)  fire 
E)  drought

Question 4

Which of the following BEST describes the growth curves of predator and prey?

Accepted Answer

A)  zero growth rate for each population 
B)  exponential growth for both until carrying capacity is reached 
C)  interdependent cycles of boom and bust or hills and valleys 
D)  logistic growth until carrying capacity is reached 
E)  a leveling off of growth when the natural increase is zero 
A)  zero growth rate for each population 
B)  exponential growth for both until carrying capacity is reached 
C)  interdependent cycles of boom and bust or hills and valleys 
D)  logistic growth until carrying capacity is reached 
E)  a leveling off of growth when the natural increase is zero

Question 5

It appears that all of the wolves on Isle Royale are the descendants of a single pair of wolves that made it to the island from the Canada.How would you compare the gene pool of the island's wolves to the wolves of the mainland?

Accepted Answer

The gene pool on the island would be muc

Question 6

You are interested in the population size of two species of caterpillars.One caterpillar has a very specific diet,feeding exclusively on only three species of tree,while the other has a very broad diet,feeding on 15 species of tree.Which caterpillar species will be easiest to count? Explain your answer.

Accepted Answer

The caterpillar that feeds on only three

Question 7

Wolves have a significant impact on the population levels of moose on Isle Royale,but they also may have a significant impact on smaller animal populations.Explain why the presence of wolves on Isle Royale might affect the population level of squirrels feeding on the same trees as moose.

Accepted Answer

As wolves prey on moose,the moose popula

Question 8

Schools of fish in a reef are an example of a ____ distribution.

Accepted Answer

A)  random 
B)  linear 
C)  spherical 
D)  clumped 
E)  uniform 
A)  random 
B)  linear 
C)  spherical 
D)  clumped 
E)  uniform

Question 9

A population's growth rate depends on

Accepted Answer

A)  birth rate. 
B)  death rate. 
C)  immigration. 
D)  emigration. 
E)  All of the above. 
A)  birth rate. 
B)  death rate. 
C)  immigration. 
D)  emigration. 
E)  All of the above.

Question 10

Many predators have been hunted,trapped,or poisoned and are now absent from many ecosystems they inhabited 100 years ago.Why do conservationists make great efforts to reintroduce predators to these ecosystems? Specifically,what is it about predators that makes for a healthy ecosystem?

Accepted Answer

When prey animals,such as herbivores,rea

Question 11

A report based on the interactions of wolves,moose,ticks,and trees on Isle Royale describes a(n)______.

Accepted Answer

A)  population 
B)  community 
C)  habitat 
D)  biome 
E)  ecosystem 
A)  population 
B)  community 
C)  habitat 
D)  biome 
E)  ecosystem

Question 12

All of the polar bears,seals,fish species,whales,seabirds and the Aleut people in the Aleutian Islands make up a(n)______.

Accepted Answer

A)  island ecosystem 
B)  island system population 
C)  island biogeographic unit 
D)  population 
E)  community 
A)  island ecosystem 
B)  island system population 
C)  island biogeographic unit 
D)  population 
E)  community

Question 13

Which of the following conditions would lead to the fastest population growth?

Accepted Answer

A)  birth rate = death rate; immigration = emigration 
B)  birth rate = death rate; immigration > emigration 
C)  birth rate > death rate; immigration > emigration 
D)  birth rate > death rate; emigration > immigration 
E)  birth rate > death rate; immigration = emigration 
A)  birth rate = death rate; immigration = emigration 
B)  birth rate = death rate; immigration > emigration 
C)  birth rate > death rate; immigration > emigration 
D)  birth rate > death rate; emigration > immigration 
E)  birth rate > death rate; immigration = emigration

Question 14

An increase in predator numbers is usually followed by a subsequent

Accepted Answer

A)  decrease in predator numbers. 
B)  decrease in prey numbers. 
C)  increase in prey numbers. 
D)  extinction of prey. 
E)  extinction of predators. 
A)  decrease in predator numbers. 
B)  decrease in prey numbers. 
C)  increase in prey numbers. 
D)  extinction of prey. 
E)  extinction of predators.

Question 15

A few years after a predator species population decreases,the ____.

Accepted Answer

A)  predator population will increase 
B)  prey population must decrease 
C)  predator population will decrease 
D)  predator population will exceed carrying capacity 
E)  prey population will increase 
A)  predator population will increase 
B)  prey population must decrease 
C)  predator population will decrease 
D)  predator population will exceed carrying capacity 
E)  prey population will increase

Question 16

Most species on the planet have a _____ distribution.

Accepted Answer

A)  random 
B)  linear 
C)  spherical 
D)  clumped 
E)  uniform 
A)  random 
B)  linear 
C)  spherical 
D)  clumped 
E)  uniform

Question 17

Without an appropriate cave or other underground den where they can sleep through the winter,a bear will die.The abundance of caves,therefore,is a __________ factor and a(n)__________ factor influencing bear populations.

Accepted Answer

A)  density-codependent; abiotic 
B)  density-dependent; abiotic 
C)  density-dependent; biotic 
D)  density-independent; abiotic 
E)  density-independent; biotic 
A)  density-codependent; abiotic 
B)  density-dependent; abiotic 
C)  density-dependent; biotic 
D)  density-independent; abiotic 
E)  density-independent; biotic

Question 18

In the Isle Royale study,why were wolf populations easier to accurately count than moose populations?

Accepted Answer

Moose are solitary; it is nearly impossi

Exam 21: A: Population Ecology on the Tracks of Wolves and Moose

Describe the method used to assess moose population size on Isle Royale.

Scientists studying mammals frequently analyze scat.Why?

Which is a density-dependent factor?

Which of the following BEST describes the growth curves of predator and prey?

It appears that all of the wolves on Isle Royale are the descendants of a single pair of wolves that made it to the island from the Canada.How would you compare the gene pool of the island's wolves to the wolves of the mainland?

Wolves have a significant impact on the population levels of moose on Isle Royale,but they also may have a significant impact on smaller animal populations.Explain why the presence of wolves on Isle Royale might affect the population level of squirrels feeding on the same trees as moose.

Schools of fish in a reef are an example of a ____ distribution.

A population's growth rate depends on

Many predators have been hunted,trapped,or poisoned and are now absent from many ecosystems they inhabited 100 years ago.Why do conservationists make great efforts to reintroduce predators to these ecosystems? Specifically,what is it about predators that makes for a healthy ecosystem?

A report based on the interactions of wolves,moose,ticks,and trees on Isle Royale describes a(n)______.

All of the polar bears,seals,fish species,whales,seabirds and the Aleut people in the Aleutian Islands make up a(n)______.

Which of the following conditions would lead to the fastest population growth?

An increase in predator numbers is usually followed by a subsequent

A few years after a predator species population decreases,the ____.

Most species on the planet have a _____ distribution.

Without an appropriate cave or other underground den where they can sleep through the winter,a bear will die.The abundance of caves,therefore,is a __________ factor and a(n)__________ factor influencing bear populations.

In the Isle Royale study,why were wolf populations easier to accurately count than moose populations?

The Process of Science Java Report

Chemistry and Molecules of Life Mission to Mars

Cell Function and Structure Wonder Drug

Nutrition,metabolism,enzymes the Peanut Butter Project

Energy Flow and Photosynthesis the Future of Fuel

Dietary Energy and Cellular Respiration Supersize Me

DNA Structure and Replication Biologically Unique

Genes to Proteins Medicine From Milk

Cell Division and Mitosis Natures Pharmacy

Mutations and Cancer Fighting Fate

Single-Gene Inheritance and Meiosis Rock for a Cause

Complex Inheritance Qa: Genetics

Stem Cells and Cell Differentiation Grow Your Own

Natural Selection and Adaptation Bugs That Resist Drugs

A: Nonadaptive Evolution and Speciation Urban Evolution

B: Nonadaptive Evolution and Speciation Urban Evolution

Evidence for Evolution a Fish With Fingers

Life on Earth Qa: Evolution

Prokaryotic Diversity Lost City

A: Eukaryotic Diversity Rain Forest Riches

B: Eukaryotic Diversity Rain Forest Riches

Human Evolution Skin Deep

B: Population Ecology on the Tracks of Wolves and Moose

A: Community Ecology Whats Happening to Honey Bees

B: Community Ecology Whats Happening to Honey Bees

A: Ecosystem Ecology the Heat Is on

B: Ecosystem Ecology the Heat Is on

A: Sustainability the Makings of a Green City

B: Sustainability the Makings of a Green City

A: Overview of Physiology Man Versus Mountain

B: Overview of Physiology Man Versus Mountain

Digestive System Drastic Measures

A: Cardiovascular System Death in Bogalusa

B: Cardiovascular System Death in Bogalusa

Respiratory System Peak Performance

A: Central Nervous System Smoke on the Brain

B: Central Nervous System Smoke on the Brain

Reproductive System Too Many Multiples

Immune System Viral Mysteries

A: Plant Physiology

B: Plant Physiology

Filters

Without an appropriate cave or other underground den where they can sleep through the winter,a bear will die.The abundance of caves,therefore,is a factor and a(n) factor influencing bear populations.