Question 1

In the Lotka-Volterra predation model, the predator death rate is represented by

Accepted Answer

A)  c. 
B)  p. 
C)  cp. 
D)  dpNp. 
E)  dp. 
A)  c. 
B)  p. 
C)  cp. 
D)  dpNp. 
E)  dp.

Question 2

In the Lotka-Volterra predation model, a predator population in the absence of prey (hosts) would

Accepted Answer

A)  grow exponentially. 
B)  grow logistically. 
C)  decline as predators die. 
D)  decline at first, but then increase as predators switch to other modes of feeding. 
E)  decline at first, but then reach a small equilibrium population size. 
A)  grow exponentially. 
B)  grow logistically. 
C)  decline as predators die. 
D)  decline at first, but then increase as predators switch to other modes of feeding. 
E)  decline at first, but then reach a small equilibrium population size.

Question 3

The defensive tactic in which prey reduce their individual probability of being eaten by occurring at very high densities is called

Accepted Answer

A)  prey satiation. 
B)  prey dilution. 
C)  predator dilution. 
D)  predator satiation. 
E)  predator masting. 
A)  prey satiation. 
B)  prey dilution. 
C)  predator dilution. 
D)  predator satiation. 
E)  predator masting.

Question 4

Birds are more effective predators than bats on foliage-living arthropods in tropical lowland forests.

Accepted Answer

A) True 
 B)False

Question 5

Bats affect the cost of agriculture because

Accepted Answer

A)  they consume crops and must be controlled. 
B)  they eat crop pests and reduce the amount of pesticides used. 
C)  they eat crop pests and reduce the amount of crop loss. 
D)  they eat crop pests and reduce both the amount of crop loss and the amount of pesticides used. 
E)  their flight patterns interfere with agricultural machinery. 
A)  they consume crops and must be controlled. 
B)  they eat crop pests and reduce the amount of pesticides used. 
C)  they eat crop pests and reduce the amount of crop loss. 
D)  they eat crop pests and reduce both the amount of crop loss and the amount of pesticides used. 
E)  their flight patterns interfere with agricultural machinery.

Question 6

Plagiorhynchus worms and Puccinia rusts are parasites that share the ability to change their host's behavior in way that

Accepted Answer

A)  increase the length of time they can survive in their hosts. 
B)  decrease their host's mortality rates. 
C)  increase their hosts reproduction, thereby increasing production of parasite-infected offspring. 
D)  increase the likelihood of their (the parasites') transmission to a new host. 
E)  decrease the hosts' vulnerability to other parasites. 
A)  increase the length of time they can survive in their hosts. 
B)  decrease their host's mortality rates. 
C)  increase their hosts reproduction, thereby increasing production of parasite-infected offspring. 
D)  increase the likelihood of their (the parasites') transmission to a new host. 
E)  decrease the hosts' vulnerability to other parasites.

Question 7

Ephemerellid mayflies under attack by stoneflies will typically

Accepted Answer

A)  swim away to escape possible predation. 
B)  rely on their cryptic coloration to escape detection. 
C)  rely on their spiny appendages to deter attack. 
D)  adopt a posture which increases their apparent size, so that the predator will avoid them. 
E)  burrow into the stream bottom. 
A)  swim away to escape possible predation. 
B)  rely on their cryptic coloration to escape detection. 
C)  rely on their spiny appendages to deter attack. 
D)  adopt a posture which increases their apparent size, so that the predator will avoid them. 
E)  burrow into the stream bottom.

Question 8

__________ consume live plant material but do not usually kill plants.

Accepted Answer

A)  Predators 
B)  Pathogens 
C)  Herbivores 
D)  Parasites 
E)  Parasitoids 
A)  Predators 
B)  Pathogens 
C)  Herbivores 
D)  Parasites 
E)  Parasitoids

In the Lotka-Volterra predation model, the predator death rate is represented by

In the Lotka-Volterra predation model, a predator population in the absence of prey (hosts) would

The defensive tactic in which prey reduce their individual probability of being eaten by occurring at very high densities is called

Birds are more effective predators than bats on foliage-living arthropods in tropical lowland forests.

Bats affect the cost of agriculture because

Plagiorhynchus worms and Puccinia rusts are parasites that share the ability to change their host's behavior in way that

Ephemerellid mayflies under attack by stoneflies will typically

__________ consume live plant material but do not usually kill plants.

Introduction to Ecology Historical Foundations and Developing Frontiers

Life on Land

Life in Water

Population Genetics and Natural Selection

Temperature Relations

Water Relations

Energy and Nutrient Relations

Socail Relations

Population Distribution and Abundance

Population Dynamics

Population Growth

Life Histories

Competition

Mutualism

Species Abundance and Diversity

Species Interactions and Community Structure

Primary Production and Energy Flow

Nutrient Cycling and Retention

Succession and Stability

Landscape Ecology

Geographic Ecology

Global Ecology

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Exam 14: Exploitative Interactions Predation, Herbivory, Parasitism, and Disease

In the Lotka-Volterra predation model, the predator death rate is represented by

In the Lotka-Volterra predation model, a predator population in the absence of prey (hosts) would

The defensive tactic in which prey reduce their individual probability of being eaten by occurring at very high densities is called

Birds are more effective predators than bats on foliage-living arthropods in tropical lowland forests.

Bats affect the cost of agriculture because

Plagiorhynchus worms and Puccinia rusts are parasites that share the ability to change their host's behavior in way that

Ephemerellid mayflies under attack by stoneflies will typically

__________ consume live plant material but do not usually kill plants.

Introduction to Ecology Historical Foundations and Developing Frontiers

Life on Land

Life in Water

Population Genetics and Natural Selection

Temperature Relations

Water Relations

Energy and Nutrient Relations

Socail Relations

Population Distribution and Abundance

Population Dynamics

Population Growth

Life Histories

Competition

Mutualism

Species Abundance and Diversity

Species Interactions and Community Structure

Primary Production and Energy Flow

Nutrient Cycling and Retention

Succession and Stability

Landscape Ecology

Geographic Ecology

Global Ecology

Filters