Question 1

Ant-acacia trees provide several services to their mutualistic ant partners.These include

Accepted Answer

A)  enlarged thorns to host ant colonies. 
B)  nectar from foliar nectaries. 
C)  nectar from floral nectaries. 
D)  All of the choices are correct. 
E)  Both enlarged thorns to host ant colonies and nectar from foliar nectaries. 
A)  enlarged thorns to host ant colonies. 
B)  nectar from foliar nectaries. 
C)  nectar from floral nectaries. 
D)  All of the choices are correct. 
E)  Both enlarged thorns to host ant colonies and nectar from foliar nectaries.

Question 2

Nutrient poor soils should favor mycorrhizal fungi that are

Accepted Answer

A)  less aggressive at obtaining sugars from their plant host. 
B)  more aggressive at obtaining sugars from their plant host. 
C)  more efficient at extracting inorganic nutrients from soil. 
D)  more efficient at extracting sugars from soil. 
E)  more efficient at extracting inorganic nutrients from plant root exudates. 
A)  less aggressive at obtaining sugars from their plant host. 
B)  more aggressive at obtaining sugars from their plant host. 
C)  more efficient at extracting inorganic nutrients from soil. 
D)  more efficient at extracting sugars from soil. 
E)  more efficient at extracting inorganic nutrients from plant root exudates.

Question 3

Which aspects of the biology of zooxanthellae are controlled by their coral hosts?

Accepted Answer

A)  their cell wall chemistry 
B)  their population growth rate when free-living 
C)  the release of photosynthetic products from their cells 
D)  the rate at which they absorb sugars from their hosts 
E)  their mortality rate 
A)  their cell wall chemistry 
B)  their population growth rate when free-living 
C)  the release of photosynthetic products from their cells 
D)  the rate at which they absorb sugars from their hosts 
E)  their mortality rate

Question 4

Which of the following organisms are dependent on mutualisms for their persistence?

Accepted Answer

A)  reef-building corals 
B)  bioluminescent fishes 
C)  bumblebees and hummingbirds 
D)  horses, elephants, and camels 
E)  All of the choices are correct. 
A)  reef-building corals 
B)  bioluminescent fishes 
C)  bumblebees and hummingbirds 
D)  horses, elephants, and camels 
E)  All of the choices are correct.

Question 5

Which of the following statements is true regarding the control of coral over zooxanthellae?

Accepted Answer

A)  Coral induces zooxanthellae to release organic compounds. 
B)  Coral controls the rate of zooxanthellae population growth. 
C)  Coral controls the population density of zooxanthellae. 
D)  Coral promotes unbalanced growth in zooxanthellae. 
E)  All of the choices are true. 
A)  Coral induces zooxanthellae to release organic compounds. 
B)  Coral controls the rate of zooxanthellae population growth. 
C)  Coral controls the population density of zooxanthellae. 
D)  Coral promotes unbalanced growth in zooxanthellae. 
E)  All of the choices are true.

Question 6

What is the 95% confidence interval for the Gila River sample of loach minnows given:   mm,s = 6.2 mm,n = 50,and critical value of t = 2.01.

Accepted Answer

A)  56.2 mm + 1.77 mm 
B)  56.2 mm $\pm$ 1.77 mm 
C)  56.2 mm - 2.26 mm 
D)  56.2 mm $\pm$ 0.25 mm 
E)  56.2 mm + 0.25 mm 
A)  56.2 mm + 1.77 mm 
B)  56.2 mm $\pm$ 1.77 mm 
C)  56.2 mm - 2.26 mm 
D)  56.2 mm $\pm$ 0.25 mm 
E)  56.2 mm + 0.25 mm

Question 7

The interaction between honeyguide birds and the Boran people of Kenya

Accepted Answer

A)  is an obligate mutualism. 
B)  is a facultative mutualism. 
C)  is exploitative, with humans benefiting but honeyguides exploited. 
D)  represents the only way a honeyguide can gain access to a beehive. 
E)  depends only on humans following birds, not on active communication by the birds. 
A)  is an obligate mutualism. 
B)  is a facultative mutualism. 
C)  is exploitative, with humans benefiting but honeyguides exploited. 
D)  represents the only way a honeyguide can gain access to a beehive. 
E)  depends only on humans following birds, not on active communication by the birds.

Question 8

A calculated range of values that we estimate contains the true mean of a population with a known degree of certainty is called a

Accepted Answer

A)  standard error. 
B)  standard deviation. 
C)  median. 
D)  Students t-value. 
E)  confidence interval. 
A)  standard error. 
B)  standard deviation. 
C)  median. 
D)  Students t-value. 
E)  confidence interval.

Question 9

The major benefit obtained by zooxanthellae algal cells from their coral host is

Accepted Answer

A)  protection from herbivores. 
B)  sugars. 
C)  phosphorus from coral wastes. 
D)  nitrogen from coral wastes. 
E)  temperature regulation. 
A)  protection from herbivores. 
B)  sugars. 
C)  phosphorus from coral wastes. 
D)  nitrogen from coral wastes. 
E)  temperature regulation.

Question 10

The two most common types of mycorrhizal fungi are ___________ and ____________.

Accepted Answer

arbuscular

Ant-acacia trees provide several services to their mutualistic ant partners.These include

Nutrient poor soils should favor mycorrhizal fungi that are

Which aspects of the biology of zooxanthellae are controlled by their coral hosts?

Which of the following organisms are dependent on mutualisms for their persistence?

Which of the following statements is true regarding the control of coral over zooxanthellae?

What is the 95% confidence interval for the Gila River sample of loach minnows given: mm,s = 6.2 mm,n = 50,and critical value of t = 2.01.

The interaction between honeyguide birds and the Boran people of Kenya

A calculated range of values that we estimate contains the true mean of a population with a known degree of certainty is called a

The major benefit obtained by zooxanthellae algal cells from their coral host is

The two most common types of mycorrhizal fungi are _ and __.

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

Exploitative Interactions Predation, herbivory, parasitism, and Disease

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 15: Mutualism

Ant-acacia trees provide several services to their mutualistic ant partners.These include

Nutrient poor soils should favor mycorrhizal fungi that are

Which aspects of the biology of zooxanthellae are controlled by their coral hosts?

Which of the following organisms are dependent on mutualisms for their persistence?

Which of the following statements is true regarding the control of coral over zooxanthellae?

What is the 95% confidence interval for the Gila River sample of loach minnows given: mm,s = 6.2 mm,n = 50,and critical value of t = 2.01.

The interaction between honeyguide birds and the Boran people of Kenya

A calculated range of values that we estimate contains the true mean of a population with a known degree of certainty is called a

The major benefit obtained by zooxanthellae algal cells from their coral host is

The two most common types of mycorrhizal fungi are ___________ and ____________.

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

Exploitative Interactions Predation, herbivory, parasitism, and Disease

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

The two most common types of mycorrhizal fungi are _ and __.