Question 1

The presence of parasitic protozoa in a culture of competing Tribolium castaneum and T.confusum

Accepted Answer

A) can reverse the outcome of competition. 
B) decreases the likelihood of coexistence. 
C) has no effect on the outcome of competition. 
D) increases the likelihood of coexistence. 
E) has an effect on the outcome of competition only in the presence of predatory birds. 
A) can reverse the outcome of competition. 
B) decreases the likelihood of coexistence. 
C) has no effect on the outcome of competition. 
D) increases the likelihood of coexistence. 
E) has an effect on the outcome of competition only in the presence of predatory birds.

Question 2

Which statement is not true of lynx and coyote predation of the snowshoe hare?

Accepted Answer

A) Lynx and coyote both show a strong numerical response to increases in the snowshoe hare population. 
B) Lynx show higher predation rates when snowshoe hare numbers are declining. 
C) Coyotes show higher predation rates when snowshoe hare numbers are increasing. 
D) Coyotes show a clear type 2 functional response to increases in the snowshoe hare population. 
E) At high hare densities,coyote and lynx predation rates exceed their daily energy needs. 
A) Lynx and coyote both show a strong numerical response to increases in the snowshoe hare population. 
B) Lynx show higher predation rates when snowshoe hare numbers are declining. 
C) Coyotes show higher predation rates when snowshoe hare numbers are increasing. 
D) Coyotes show a clear type 2 functional response to increases in the snowshoe hare population. 
E) At high hare densities,coyote and lynx predation rates exceed their daily energy needs.

Question 3

The standard error of the mean is equal to

Accepted Answer

A) the sample variance divided by the sample size. 
B) the sample standard deviation divided by the square root of the sample size. 
C) the sample variance divided by the square root of the sample size. 
D) twice the square root of the sample size. 
E) twice the square root of the sample variance. 
A) the sample variance divided by the sample size. 
B) the sample standard deviation divided by the square root of the sample size. 
C) the sample variance divided by the square root of the sample size. 
D) twice the square root of the sample size. 
E) twice the square root of the sample variance.

Question 4

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 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

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

Accepted Answer

A) grow exponentially. 
B) grow logistically. 
C) grow exponentially,and then crash when it has outstripped its own food supply. 
D) decline to extinction. 
E) The model makes no assumptions about what happens in the absence of predators. 
A) grow exponentially. 
B) grow logistically. 
C) grow exponentially,and then crash when it has outstripped its own food supply. 
D) decline to extinction. 
E) The model makes no assumptions about what happens in the absence of predators.

The presence of parasitic protozoa in a culture of competing Tribolium castaneum and T.confusum

Which statement is not true of lynx and coyote predation of the snowshoe hare?

The standard error of the mean is equal to

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

Bats affect the cost of agriculture because

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

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

Exam 14: Exploitative Interactions: Predation, herbivory, parasitism, and Disease

The presence of parasitic protozoa in a culture of competing Tribolium castaneum and T.confusum

Which statement is not true of lynx and coyote predation of the snowshoe hare?

The standard error of the mean is equal to

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

Bats affect the cost of agriculture because

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

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