Question 1

Explain the role of sea otters in affecting the populations of kelp and sea urchins.

Accepted Answer

Sea otters consume sea urchins

Question 2

Interspecific competition only occurs as a result of predation.

Accepted Answer

A) True 
 B)False

Question 3

Which term best describe the ability of a living system to be restored through secondary ecological succession after a severe disturbance?

Accepted Answer

A)  Inertia 
B)  Persistence 
C)  Constancy 
D)  Resilience 
E)  Diversity 
A)  Inertia 
B)  Persistence 
C)  Constancy 
D)  Resilience 
E)  Diversity

Question 4

Poison dart frogs have bright coloration that is easily visible to other animals. This is an example of ____.

Accepted Answer

A)  mutualism that allows them to coexist with other species in dense forests 
B)  deceptive appearance to make them appear threatening when they are not 
C)  deceptive behavior that makes them appear threatening when they are not 
D)  warning coloration that advertises their ability to harm predators 
E)  mimicry because they resemble other organisms in their habitat 
A)  mutualism that allows them to coexist with other species in dense forests 
B)  deceptive appearance to make them appear threatening when they are not 
C)  deceptive behavior that makes them appear threatening when they are not 
D)  warning coloration that advertises their ability to harm predators 
E)  mimicry because they resemble other organisms in their habitat

Question 5

When similar species live in the same geographic area but specialize on different foods or feeding areas, it is an example of _________________________.

Accepted Answer

resource p

Question 6

A population of deer suddenly decreases dramatically in number. This most likely occurred because ____.

Accepted Answer

A)  the was a gradual decrease in environmental resistance 
B)  the number of resources increased steadily 
C)  the population approached its carrying capacity 
D)  the population increased beyond its carrying capacity 
E)  population crashes are common and expected on a regular basis regardless of population size 
A)  the was a gradual decrease in environmental resistance 
B)  the number of resources increased steadily 
C)  the population approached its carrying capacity 
D)  the population increased beyond its carrying capacity 
E)  population crashes are common and expected on a regular basis regardless of population size

Question 7

Which of the following is an example of an r-selected species?

Accepted Answer

A)  Most tropical rainforest trees 
B)  Humans 
C)  Whales 
D)  Most insects 
E)  Elephants 
A)  Most tropical rainforest trees 
B)  Humans 
C)  Whales 
D)  Most insects 
E)  Elephants

Question 8

A species of snake has evolved resistance to a poisonous newt, allowing the snakes to prey on the newts. The newts have become more poisonous over time, as a result, leading to a kind of evolutionary arms race. This is an example of ____.

Accepted Answer

A)  commensalism 
B)  mimicry 
C)  coevolution 
D)  ecological succession 
E)  environmental resistance 
A)  commensalism 
B)  mimicry 
C)  coevolution 
D)  ecological succession 
E)  environmental resistance

Question 9

As a population approaches the carrying capacity of its habitat, the ____-shaped curve of its exponential growth is converted to a(n) ____-shaped curve of logistic growth that fluctuates around a certain level.

Accepted Answer

A)  J; S 
B)  S; J 
C)  I; L 
D)  L; V 
E)  I; U 
A)  J; S 
B)  S; J 
C)  I; L 
D)  L; V 
E)  I; U

Question 10

A relationship in which both species benefit best illustrates ____.

Accepted Answer

A)  competition 
B)  predation 
C)  mutualism 
D)  parasitism 
E)  commensalism 
A)  competition 
B)  predation 
C)  mutualism 
D)  parasitism 
E)  commensalism

Question 11

Some prey species use ____ to scare off predators by puffing up (blowfish), spreading their wings (peacocks), or mimicking a predator.

Accepted Answer

A)  camouflage 
B)  chemical warfare 
C)  parasitism 
D)  commensalism 
E)  behavioral strategies 
A)  camouflage 
B)  chemical warfare 
C)  parasitism 
D)  commensalism 
E)  behavioral strategies

Question 12

You are an evolutionary entomologist. You have observed beetles that can raise their abdomens and give off a defensive chemical that generally repels predators. You discover a new species of beetle that raises its abdomen in a threatening way similar to the first species, but no defensive chemical is given off. You are most likely to characterize this defensive strategy in the new beetle as a form of ____.

Accepted Answer

A)  camouflage 
B)  chemical warfare 
C)  mimicry 
D)  flight mechanism 
E)  warning coloration 
A)  camouflage 
B)  chemical warfare 
C)  mimicry 
D)  flight mechanism 
E)  warning coloration

Question 13

Humans compete with other organisms for space, food, and resources. This is an example _____________________ competition.

Accepted Answer

The answer of Humans compete with other organisms for space,...

Question 14

Some bats prey on certain moths, hunting them using echolocation. Some of those moths have evolved ears sensitive to the sound frequencies bats use to locate them, helping them to avoid being caught. The bats, in turn, have evolved to change the frequency they use. This interaction is an example of ____.

Accepted Answer

A)  resource partitioning 
B)  intraspecific competition 
C)  parasitism 
D)  coevolution 
E)  mutualism 
A)  resource partitioning 
B)  intraspecific competition 
C)  parasitism 
D)  coevolution 
E)  mutualism

Question 15

Fleas live on mammals, consuming their blood. As a result, they are considered to be ____________________.

Accepted Answer

The answer of Fleas live on mammals, consuming their blood....

Question 16

Resource partitioning reduces the number of species that can share a given resource.

Accepted Answer

A) True 
 B)False

Question 17

The carrying capacity of a population is ____.

Accepted Answer

A)  able to rise and fall 
B)  fixed and unchanging 
C)  not affected by the presence of limiting factors 
D)  not affected by changes in the available resources 
E)  relatively stable, although small changes are possible 
A)  able to rise and fall 
B)  fixed and unchanging 
C)  not affected by the presence of limiting factors 
D)  not affected by changes in the available resources 
E)  relatively stable, although small changes are possible

Question 18

Epiphytes are parasitic plants that grow on trees.

Accepted Answer

A) True 
 B)False

Question 19

Following a disturbance such as a forest fire, secondary ecological succession can occur.

Accepted Answer

A) True 
 B)False

Question 20

A population's age structure is usually defined in terms of organisms in the pre-reproductive stage, reproductive stage, and post-reproductive stage.

Accepted Answer

A) True 
 B)False

Explain the role of sea otters in affecting the populations of kelp and sea urchins.

Interspecific competition only occurs as a result of predation.

Which term best describe the ability of a living system to be restored through secondary ecological succession after a severe disturbance?

Poison dart frogs have bright coloration that is easily visible to other animals. This is an example of ____.

When similar species live in the same geographic area but specialize on different foods or feeding areas, it is an example of _________________________.

A population of deer suddenly decreases dramatically in number. This most likely occurred because ____.

Which of the following is an example of an r-selected species?

A species of snake has evolved resistance to a poisonous newt, allowing the snakes to prey on the newts. The newts have become more poisonous over time, as a result, leading to a kind of evolutionary arms race. This is an example of ____.

As a population approaches the carrying capacity of its habitat, the -shaped curve of its exponential growth is converted to a(n) -shaped curve of logistic growth that fluctuates around a certain level.

A relationship in which both species benefit best illustrates ____.

Some prey species use ____ to scare off predators by puffing up (blowfish), spreading their wings (peacocks), or mimicking a predator.

Humans compete with other organisms for space, food, and resources. This is an example _____________________ competition.

Fleas live on mammals, consuming their blood. As a result, they are considered to be ____________________.

Resource partitioning reduces the number of species that can share a given resource.

The carrying capacity of a population is ____.

Epiphytes are parasitic plants that grow on trees.

Following a disturbance such as a forest fire, secondary ecological succession can occur.

A population's age structure is usually defined in terms of organisms in the pre-reproductive stage, reproductive stage, and post-reproductive stage.

The Environment and Sustainability

Science, Matter, Energy and Systems

Ecosystems: What Are They and How Do They Work

Biodiversity and Evolution

The Human Population and Urbanization

Climate and Biodiversity

Sustaining Biodiversity: Saving Species

Sustaining Biodiversity: Saving Ecosystems

Food Production and the Environment

Water Resources and Water Pollution

Geology and Nonrenewable Mineral Resources

Energy Resources

Environmental Hazards and Human Health

Air Pollution, Climate Change and Ozone Depletion

Solid and Hazardous Waste

Environmental Economics, Politics and Worldviews

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Exam 5: Species Interactions, Ecological Succession and Population Control

Explain the role of sea otters in affecting the populations of kelp and sea urchins.

Interspecific competition only occurs as a result of predation.

Which term best describe the ability of a living system to be restored through secondary ecological succession after a severe disturbance?

Poison dart frogs have bright coloration that is easily visible to other animals. This is an example of ____.

When similar species live in the same geographic area but specialize on different foods or feeding areas, it is an example of _________________________.

A population of deer suddenly decreases dramatically in number. This most likely occurred because ____.

Which of the following is an example of an r-selected species?

A species of snake has evolved resistance to a poisonous newt, allowing the snakes to prey on the newts. The newts have become more poisonous over time, as a result, leading to a kind of evolutionary arms race. This is an example of ____.

As a population approaches the carrying capacity of its habitat, the ____-shaped curve of its exponential growth is converted to a(n) ____-shaped curve of logistic growth that fluctuates around a certain level.

A relationship in which both species benefit best illustrates ____.

Some prey species use ____ to scare off predators by puffing up (blowfish), spreading their wings (peacocks), or mimicking a predator.

Humans compete with other organisms for space, food, and resources. This is an example _____________________ competition.

Fleas live on mammals, consuming their blood. As a result, they are considered to be ____________________.

Resource partitioning reduces the number of species that can share a given resource.

The carrying capacity of a population is ____.

Epiphytes are parasitic plants that grow on trees.

Following a disturbance such as a forest fire, secondary ecological succession can occur.

A population's age structure is usually defined in terms of organisms in the pre-reproductive stage, reproductive stage, and post-reproductive stage.

The Environment and Sustainability

Science, Matter, Energy and Systems

Ecosystems: What Are They and How Do They Work

Biodiversity and Evolution

The Human Population and Urbanization

Climate and Biodiversity

Sustaining Biodiversity: Saving Species

Sustaining Biodiversity: Saving Ecosystems

Food Production and the Environment

Water Resources and Water Pollution

Geology and Nonrenewable Mineral Resources

Energy Resources

Environmental Hazards and Human Health

Air Pollution, Climate Change and Ozone Depletion

Solid and Hazardous Waste

Environmental Economics, Politics and Worldviews

Filters

As a population approaches the carrying capacity of its habitat, the -shaped curve of its exponential growth is converted to a(n) -shaped curve of logistic growth that fluctuates around a certain level.