Question 1

According to the intermediate disturbance hypothesis, species richness is greatest in communities that experience ____.

Accepted Answer

A)  rare moderate disturbances 
B)  high temperatures 
C)  frequent severe disturbances 
D)  frequent moderate disturbances 
E)  rare intense disturbances 
A)  rare moderate disturbances 
B)  high temperatures 
C)  frequent severe disturbances 
D)  frequent moderate disturbances 
E)  rare intense disturbances

Question 2

How do North American porcupines protect themselves from predators?

Accepted Answer

A)  Their coloration serves as a disguise. 
B)  They seek shelter in a tree. 
C)  They have large jaws with teeth. 
D)  They release a noxious spray. 
E)  They release sharp modified hairs that stick in a predator's mouth. 
A)  Their coloration serves as a disguise. 
B)  They seek shelter in a tree. 
C)  They have large jaws with teeth. 
D)  They release a noxious spray. 
E)  They release sharp modified hairs that stick in a predator's mouth.

Question 3

What is the difference between a food chain and a food web?

Accepted Answer

A food chain is depicted in a straight l

Question 4

What is the relationship between species richness and recovery from natural disturbances?

Accepted Answer

A)  Communities with more diversity do not recover from natural disturbances. 
B)  Communities with more diversity experience more natural disturbances. 
C)  Communities with more diversity recover less rapidly from natural disturbances. 
D)  Communities with more diversity recover more rapidly from natural disturbances. 
E)  There is no correlation between community diversity and recovery from natural disturbances. 
A)  Communities with more diversity do not recover from natural disturbances. 
B)  Communities with more diversity experience more natural disturbances. 
C)  Communities with more diversity recover less rapidly from natural disturbances. 
D)  Communities with more diversity recover more rapidly from natural disturbances. 
E)  There is no correlation between community diversity and recovery from natural disturbances.

Question 5

What benefit do legumes derive from Rhizobium ?

Accepted Answer

A)  help make carbon dioxide more available 
B)  increase root surface area 
C)  nitrogen fixation 
D)  protection from predators 
E)  retain water so it is more available to the plant 
A)  help make carbon dioxide more available 
B)  increase root surface area 
C)  nitrogen fixation 
D)  protection from predators 
E)  retain water so it is more available to the plant

Question 6

Which best describes a dominant species?

Accepted Answer

A)  A dominant species is the only species in an area. 
B)  A dominant species has low genetic diversity. 
C)  A dominant species has high species richness. 
D)  A dominant species has a high relative abundance. 
E)  A dominant species has a low relative abundance. 
A)  A dominant species is the only species in an area. 
B)  A dominant species has low genetic diversity. 
C)  A dominant species has high species richness. 
D)  A dominant species has a high relative abundance. 
E)  A dominant species has a low relative abundance.

Question 7

In many ecological communities, one common species can function as a foundation species , defining the nature of a community by creating locally stable environmental conditions.

Accepted Answer

A) True 
 B)False

Question 8

More _____ need to be studied in order to find out whether interspecific competition strongly influences the species composition and structure of most communities.

Accepted Answer

A)  communities 
B)  K -selected species 
C)  r -selected species 
D)  predators 
E)  prey species 
A)  communities 
B)  K -selected species 
C)  r -selected species 
D)  predators 
E)  prey species

Question 9

Which interaction is advantageous for one species, but has no effect on the other?

Accepted Answer

A)  commensalism 
B)  herbivory 
C)  mutualism 
D)  parasitism 
E)  predation 
A)  commensalism 
B)  herbivory 
C)  mutualism 
D)  parasitism 
E)  predation

Exam 53: Population Interactions and Community Ecology

According to the intermediate disturbance hypothesis, species richness is greatest in communities that experience ____.

How do North American porcupines protect themselves from predators?

What is the difference between a food chain and a food web?

What is the relationship between species richness and recovery from natural disturbances?

What benefit do legumes derive from Rhizobium ?

Which best describes a dominant species?

In many ecological communities, one common species can function as a foundation species , defining the nature of a community by creating locally stable environmental conditions.

More _____ need to be studied in order to find out whether interspecific competition strongly influences the species composition and structure of most communities.

Which interaction is advantageous for one species, but has no effect on the other?

Introduction to Biological Concepts and Research

Life, Chemistry, and Water

Biological Molecules: the Carbon Compounds of Life

Cells

Membranes and Transport

Energy, Enzymes, and Biological Reactions

Cellular Respiration: Harvesting Chemical Energy

Photosynthesis

Cell Communication

Cell Division and Mitosis

Meiosis: the Cellular Basis of Sexual Reproduction

Mendel, Genes, and Inheritance

Genes, Chromosomes, and Human Genetics

Dna Structure, Replication, and Organization

Gene Expression: From Dna to Protein

Regulation of Gene Expression

Bacterial and Viral Genetics

Dna Technology: Making and Using Genetically Altered Organisms, and Other Applications

Genomes and Proteomes

The Development of Evolutionary Thought

Microevolution: Genetic Changes Within Populations

Speciation

Paleobiology and Macroevolution

Systematic Biology: Phylogeny and Classification

The Origin of Life

Prokaryotes and Viruses

Protists

Seedless Plants

Seed Plants

Fungi

Animal Phylogeny, Acoelomates, and Protostomes

Deuterostomes: Vertebrates and Their Closest Relatives

The Plant Body

Transport in Plants

Plant Nutrition

Reproduction and Development in Flowering Plants

Plant Signals and Responses to the Environment

Introduction to Animal Organization and Physiology

Information Flow and the Neuron

Nervous Systems

Sensory Systems

The Endocrine System

Muscles, Bones, and Body Movements

The Circulatory System

Defenses Against Disease

Gas Exchange: the Respiratory System

Digestive Systems and Animal Nutrition

Regulating the Internal Environment: Osmoregulation, Excretion, and Thermoregulation

Animal Reproduction

Animal Development

Ecology and the Biosphere

Population Ecology

Ecosystems

Biodiversity and Conservation Biology

Animal Behavior

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