Question 1

Which of the following is a correct graphical representation of the Lotka-Volterra predator-prey model?

Accepted Answer

A) predator and prey numbers are plotted against time producing reciprocal oscillations in predator prey populations 
B) predator numbers are plotted against prey numbers producing reciprocal oscillations in predator prey populations 
C) predator and prey numbers are plotted against time producing an elliptical oscillation in predator prey numbers 
D) predator numbers are plotted against prey numbers producing an elliptical oscillation in predator prey numbers 
E) both predator and prey numbers are plotted against time producing reciprocal oscillations in predator prey populations and predator numbers are plotted against prey numbers producing an elliptical oscillation in predator prey numbers 
A) predator and prey numbers are plotted against time producing reciprocal oscillations in predator prey populations 
B) predator numbers are plotted against prey numbers producing reciprocal oscillations in predator prey populations 
C) predator and prey numbers are plotted against time producing an elliptical oscillation in predator prey numbers 
D) predator numbers are plotted against prey numbers producing an elliptical oscillation in predator prey numbers 
E) both predator and prey numbers are plotted against time producing reciprocal oscillations in predator prey populations and predator numbers are plotted against prey numbers producing an elliptical oscillation in predator prey numbers

Question 2

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 3

Which of the following factors can stabilize predator-prey relationships by providing a prey refuge?

Accepted Answer

A) an area of prey habitat where predators cannot enter 
B) an area of prey habitat that is isolated and difficult for predators to find 
C) the occurrence of prey in numbers too large for predators to attack effectively 
D) the ability of prey to grow to a size invulnerable to predation 
E) All of the choices are correct. 
A) an area of prey habitat where predators cannot enter 
B) an area of prey habitat that is isolated and difficult for predators to find 
C) the occurrence of prey in numbers too large for predators to attack effectively 
D) the ability of prey to grow to a size invulnerable to predation 
E) All of the choices are correct.

Question 4

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 5

In the Lotka-Volterra model,the rate of predation 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 6

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 7

A "negatively phototaxic" amphipod will swim

Accepted Answer

A) away from parasitic worms. 
B) towards parasitic worms. 
C) away from competing amphipods. 
D) towards light. 
E) away from light. 
A) away from parasitic worms. 
B) towards parasitic worms. 
C) away from competing amphipods. 
D) towards light. 
E) away from light.

Question 8

Periodical cicadas spend 13 or 17 years

Accepted Answer

A) feeding in tree twigs before emerging as adults. 
B) feeding on tree roots before emerging as adults. 
C) as adults before laying eggs. 
D) in a resistant,resting egg before hatching as larvae. 
E) None of the choices are correct. 
A) feeding in tree twigs before emerging as adults. 
B) feeding on tree roots before emerging as adults. 
C) as adults before laying eggs. 
D) in a resistant,resting egg before hatching as larvae. 
E) None of the choices are correct.

Which of the following is a correct graphical representation of the Lotka-Volterra predator-prey model?

Bats affect the cost of agriculture because

Which of the following factors can stabilize predator-prey relationships by providing a prey refuge?

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

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

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

A "negatively phototaxic" amphipod will swim

Periodical cicadas spend 13 or 17 years

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

Social 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

Which of the following is a correct graphical representation of the Lotka-Volterra predator-prey model?

Bats affect the cost of agriculture because

Which of the following factors can stabilize predator-prey relationships by providing a prey refuge?

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

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

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

A "negatively phototaxic" amphipod will swim

Periodical cicadas spend 13 or 17 years

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

Social 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