Question 1

Which concept suggests that a community is much more than the sum of its individual parts?

Accepted Answer

A)  holistic concept 
B)  individualistic concept 
C)  concept of independence 
D)  ecotone concept 
A)  holistic concept 
B)  individualistic concept 
C)  concept of independence 
D)  ecotone concept

Question 2

Use Figure 18.10a for MC questions 20 - 22.
  
-What would be the most likely species richness-productivity relationship for a community in which the species were not resource limited?

Accepted Answer

A)  U-shaped 
B)  negative 
C)  none 
D)  positive 
E)  hump-shaped 
A)  U-shaped 
B)  negative 
C)  none 
D)  positive 
E)  hump-shaped

Question 3

The dams that have been built on many rivers stabilize river flow by increasing flows below the dam during droughts and decreasing the amount of flooding during periods of high rainfall. Explain how these stabilized flows can be considered as a disturbance.

Accepted Answer

The river communities prior to dam insta

Question 4

Use the figure to answer questions 4 to 7.
  
-Which species is restricted to nonserpentine soils?

Accepted Answer

A)  black oak 
B)  hawkweed 
C)  ragwort 
D)  fireweed 
A)  black oak 
B)  hawkweed 
C)  ragwort 
D)  fireweed

Question 5

Keystone species

Accepted Answer

A)  have the most biomass in a community. 
B)  are usually top predators. 
C)  can affect community structure despite low abundance. 
D)  are invasive predator species that eat native herbivores. 
A)  have the most biomass in a community. 
B)  are usually top predators. 
C)  can affect community structure despite low abundance. 
D)  are invasive predator species that eat native herbivores.

Question 6

You have been keeping a list of the bird species that frequent your property. At the end of the year you have tallied eight seed eaters, one nectar sipper, three woodpeckers, six insectivores, two frugivores, four predators, and one carrion feeder. You have organized your tally according to

Accepted Answer

A)  habitat. 
B)  community. 
C)  population. 
D)  guild. 
A)  habitat. 
B)  community. 
C)  population. 
D)  guild.

Question 7

What can we learn about the roles of species in a community from food web structure alone?

Accepted Answer

A food web would allow for identificatio

Question 8

Why are keystone species important in food webs?

Accepted Answer

Their presence or absence can

Question 9

What species richness-productivity relationship has the Park Grass experiment in England demonstrated over the past 150 years?

Accepted Answer

A)  U-shaped 
B)  negative 
C)  none 
D)  positive 
E)  hump-shaped 
A)  U-shaped 
B)  negative 
C)  none 
D)  positive 
E)  hump-shaped

Question 10

Briefly describe an experiment to test whether species are independent or rely on each other for existence.

Accepted Answer

Species removal experiments. I

Question 11

Consider invertebrates such as starfish and mussels on a rocky intertidal habitat where tidal cycles cause the animals to move between exposure and submersion. Are these changing conditions considered a disturbance?

Accepted Answer

This is not a disturbance, sin

Question 12

Which of the following is NOT an example of a trait-mediated indirect effect?

Accepted Answer

A)  The presence of raptors causes squirrels to forage at night instead of during the day. 
B)  Greater numbers of aspen trees grow in areas where predation risk from wolves prevents elk from browsing. 
C)  Grasses increase because the presence of spiders has reduced grasshopper foraging. 
D)  Zooplankton abundance in a pond increases because piscivorous largemouth bass cause small fish (zooplanktivores) to take refuge in pond margins away from zooplankton. 
A)  The presence of raptors causes squirrels to forage at night instead of during the day. 
B)  Greater numbers of aspen trees grow in areas where predation risk from wolves prevents elk from browsing. 
C)  Grasses increase because the presence of spiders has reduced grasshopper foraging. 
D)  Zooplankton abundance in a pond increases because piscivorous largemouth bass cause small fish (zooplanktivores) to take refuge in pond margins away from zooplankton.

Question 13

Keystone species that are predators in a food web can increase species diversity by

Accepted Answer

A)  increasing the biomass of primary producers. 
B)  removing competitive dominants. 
C)  creating an intermediate disturbance. 
D)  increasing production efficiency. 
A)  increasing the biomass of primary producers. 
B)  removing competitive dominants. 
C)  creating an intermediate disturbance. 
D)  increasing production efficiency.

Question 14

A trophic cascade is an example of _____ effect.

Accepted Answer

A)  direct 
B)  indirect 
A)  direct 
B)  indirect

Question 15

Which would likely have very high resilience to disturbance?

Accepted Answer

A)  soil microbes 
B)  redwood forest 
C)  desert vegetation 
D)  grassland 
A)  soil microbes 
B)  redwood forest 
C)  desert vegetation 
D)  grassland

Question 16

Which concept suggests that a community is a collection of species whose adaptations and requirements enable them to live together under the physical and biological conditions of a particular place?

Accepted Answer

A)  holistic concept 
B)  individualistic concept 
C)  concept of independence 
D)  ecotone concept 
A)  holistic concept 
B)  individualistic concept 
C)  concept of independence 
D)  ecotone concept

Which concept suggests that a community is much more than the sum of its individual parts?

Use Figure 18.10a for MC questions 20 - 22. -What would be the most likely species richness-productivity relationship for a community in which the species were not resource limited?

The dams that have been built on many rivers stabilize river flow by increasing flows below the dam during droughts and decreasing the amount of flooding during periods of high rainfall. Explain how these stabilized flows can be considered as a disturbance.

Use the figure to answer questions 4 to 7. -Which species is restricted to nonserpentine soils?

Keystone species

You have been keeping a list of the bird species that frequent your property. At the end of the year you have tallied eight seed eaters, one nectar sipper, three woodpeckers, six insectivores, two frugivores, four predators, and one carrion feeder. You have organized your tally according to

What can we learn about the roles of species in a community from food web structure alone?

Why are keystone species important in food webs?

What species richness-productivity relationship has the Park Grass experiment in England demonstrated over the past 150 years?

Briefly describe an experiment to test whether species are independent or rely on each other for existence.

Consider invertebrates such as starfish and mussels on a rocky intertidal habitat where tidal cycles cause the animals to move between exposure and submersion. Are these changing conditions considered a disturbance?

Which of the following is NOT an example of a trait-mediated indirect effect?

Keystone species that are predators in a food web can increase species diversity by

A trophic cascade is an example of _____ effect.

Which would likely have very high resilience to disturbance?

Which concept suggests that a community is a collection of species whose adaptations and requirements enable them to live together under the physical and biological conditions of a particular place?

Introduction: Ecology, Evolution, and the Scientific Method

Adaptations to Aquatic Environments

Adaptations to Terrestrial Environments

Adaptations to Variable Environments

Climates and Soils

Terrestrial and Aquatic Biomes

Evolution and Adaptation

Life Histories

Reproductive Strategies

Social Behaviours

Population Distributions

Population Growth and Regulation

Population Dynamics Over Space and Time

Predation and Herbivory

Parasitism and Infectious Diseases

Competition

Community Succession

Movement of Energy in Ecosystems

Movement of Elements in Ecosystems

Landscape Ecology, Biogeography, and Global Biodiversity

Global Conservation of Biodiversity

Filters

Exam 18: Community Structure

Which concept suggests that a community is much more than the sum of its individual parts?

Use Figure 18.10a for MC questions 20 - 22. -What would be the most likely species richness-productivity relationship for a community in which the species were not resource limited?

The dams that have been built on many rivers stabilize river flow by increasing flows below the dam during droughts and decreasing the amount of flooding during periods of high rainfall. Explain how these stabilized flows can be considered as a disturbance.

Use the figure to answer questions 4 to 7. -Which species is restricted to nonserpentine soils?

Keystone species

You have been keeping a list of the bird species that frequent your property. At the end of the year you have tallied eight seed eaters, one nectar sipper, three woodpeckers, six insectivores, two frugivores, four predators, and one carrion feeder. You have organized your tally according to

What can we learn about the roles of species in a community from food web structure alone?

Why are keystone species important in food webs?

What species richness-productivity relationship has the Park Grass experiment in England demonstrated over the past 150 years?

Briefly describe an experiment to test whether species are independent or rely on each other for existence.

Consider invertebrates such as starfish and mussels on a rocky intertidal habitat where tidal cycles cause the animals to move between exposure and submersion. Are these changing conditions considered a disturbance?

Which of the following is NOT an example of a trait-mediated indirect effect?

Keystone species that are predators in a food web can increase species diversity by

A trophic cascade is an example of _____ effect.

Which would likely have very high resilience to disturbance?

Which concept suggests that a community is a collection of species whose adaptations and requirements enable them to live together under the physical and biological conditions of a particular place?

Introduction: Ecology, Evolution, and the Scientific Method

Adaptations to Aquatic Environments

Adaptations to Terrestrial Environments

Adaptations to Variable Environments

Climates and Soils

Terrestrial and Aquatic Biomes

Evolution and Adaptation

Life Histories

Reproductive Strategies

Social Behaviours

Population Distributions

Population Growth and Regulation

Population Dynamics Over Space and Time

Predation and Herbivory

Parasitism and Infectious Diseases

Competition

Community Succession

Movement of Energy in Ecosystems

Movement of Elements in Ecosystems

Landscape Ecology, Biogeography, and Global Biodiversity

Global Conservation of Biodiversity

Filters