Question 1

Discuss coevolution as it relates to predator-prey interactions.Include a brief discussion of two specific examples.

Accepted Answer

Predation has resulted in a co-evolution

Question 2

Many poisonous snakes share warning colors of red, yellow, and black.This is an example of:

Accepted Answer

A)  Batesian mimicry. 
B)  mutualism. 
C)  camouflage. 
D)  Müllerian mimicry. 
E)  character displacement. 
A)  Batesian mimicry. 
B)  mutualism. 
C)  camouflage. 
D)  Müllerian mimicry. 
E)  character displacement.

Question 3

Which habitat would be expected to have the greatest species richness?

Accepted Answer

A)  an island 
B)  a polar habitat 
C)  an ecotone 
D)  an agricultural habitat 
E)  a mountain top 
A)  an island 
B)  a polar habitat 
C)  an ecotone 
D)  an agricultural habitat 
E)  a mountain top

Question 4

The community found on a rotting log would not include:

Accepted Answer

A)  mosses. 
B)  rainwater. 
C)  bacteria. 
D)  termites. 
E)  lichens. 
A)  mosses. 
B)  rainwater. 
C)  bacteria. 
D)  termites. 
E)  lichens.

Question 5

Large-scale experiments conducted in oak forests of the northeastern United States linked bumper acorn crops to booming mouse populations.The conclusion from these experiments is that:

Accepted Answer

A)  increased levels of first trophic level productivity cause an increase in disease vector activities. 
B)  competition can result in a more limited realized niche. 
C)  high biological diversity results in a decrease in Lyme disease transmission to human beings. 
D)  extermination of mouse populations is the most effective way of reducing Lyme disease transmission. 
E)  potential threat of Lyme disease in human beings is eliminated following a bumper crop of acorns. 
A)  increased levels of first trophic level productivity cause an increase in disease vector activities. 
B)  competition can result in a more limited realized niche. 
C)  high biological diversity results in a decrease in Lyme disease transmission to human beings. 
D)  extermination of mouse populations is the most effective way of reducing Lyme disease transmission. 
E)  potential threat of Lyme disease in human beings is eliminated following a bumper crop of acorns.

Question 6

Species richness is __________ when any one species enjoys a position of dominance.

Accepted Answer

A)  no different 
B)  more dense 
C)  reduced 
D)  increased 
E)  complex 
A)  no different 
B)  more dense 
C)  reduced 
D)  increased 
E)  complex

Question 7

Competition between species 1 and species 2 is beneficial for species 1 and harmful for species 2.
____________________

Accepted Answer

A) True 
 B)False

Question 8

Adaptations that exert a strong competitive force on a predator are the result of coevolution.
____________________

Accepted Answer

A) True 
 B)False

Question 9

Which of the following is not a community?

Accepted Answer

A)  the microorganisms living within the soil of your yard 
B)  the life within a pond 
C)  the organisms living within a dead tree in a forest 
D)  the population of western gulls on a beach 
E)  nurse logs which shelter plants and other organisms 
A)  the microorganisms living within the soil of your yard 
B)  the life within a pond 
C)  the organisms living within a dead tree in a forest 
D)  the population of western gulls on a beach 
E)  nurse logs which shelter plants and other organisms

Question 10

The realized niche for the green anole was determined by:

Accepted Answer

A)  a limiting resource. 
B)  competition. 
C)  symbiosis. 
D)  coevolution. 
E)  disease. 
A)  a limiting resource. 
B)  competition. 
C)  symbiosis. 
D)  coevolution. 
E)  disease.

Question 11

Traditionally, most ecologists have assumed that community stability is a consequence of:

Accepted Answer

A)  competition. 
B)  predation. 
C)  community complexity. 
D)  the relative size of realized niches among species. 
E)  disease. 
A)  competition. 
B)  predation. 
C)  community complexity. 
D)  the relative size of realized niches among species. 
E)  disease.

Question 12

Ecologist James H.Brown of the University of New Mexico has addressed species composition and richness in experiments conducted since 1977 in the Chihuahuan desert of southeastern Arizona.In one experiment, the removal of three dominant species, all kangaroo rats, from several plots resulted in an increased diversity of other rodent species.This increase was ascribed both to lowered competition for food and also to an altered habitat, because the abundance of grass species __________ after the removal of the kangaroo rats.

Accepted Answer

A)  increased 
B)  decreased 
C)  did not change 
D)  was threatened 
E)  shrunk 
A)  increased 
B)  decreased 
C)  did not change 
D)  was threatened 
E)  shrunk

Question 13

Resource partitioning may include all of the following except:

Accepted Answer

A)  relocating nesting sites. 
B)  changing the time of day when feeding occurs. 
C)  specialization on different types of prey. 
D)  changing the season when reproduction occurs. 
E)  intraspecific competition. 
A)  relocating nesting sites. 
B)  changing the time of day when feeding occurs. 
C)  specialization on different types of prey. 
D)  changing the season when reproduction occurs. 
E)  intraspecific competition.

Question 14

The almost complete loss of the American chestnut tree to the chestnut blight fungus had __________ ecological impact on the moderately diverse Appalachian woodlands of which it was formerly a part.

Accepted Answer

A)  little 
B)  great 
C)  moderate 
D)  undetectable 
E)  detectable. 
A)  little 
B)  great 
C)  moderate 
D)  undetectable 
E)  detectable.

Question 15

In ecosystems bottom up processes, predators affect the abundances of other populations in the ecological community.
____________________

Accepted Answer

A) True 
 B)False

Question 16

In which of the following habitat types would species diversity be expected to be relatively low?

Accepted Answer

A)  high environmental stress 
B)  low environmental stress 
C)  continental ecosystems 
D)  ecotones 
E)  mature successional communities 
A)  high environmental stress 
B)  low environmental stress 
C)  continental ecosystems 
D)  ecotones 
E)  mature successional communities

Question 17

Figure 54-1
Use the figure to answer the corresponding question(s).  
-In Experimental Condition 1 of Figure 54-1, the distribution of Balanus suggests:

Accepted Answer

A)  that interspecific competition kept Balanus from extending higher into the intertidal area. 
B)  that intraspecific competition kept Balanus from extending higher into the intertidal area. 
C)  that an unfavorable environmental factor kept Balanus from extending higher into the intertidal area. 
D)  that Balanus is less motile than Chthamalus. 
E)  that Balanus is more motile than Chthamalus. 
A)  that interspecific competition kept Balanus from extending higher into the intertidal area. 
B)  that intraspecific competition kept Balanus from extending higher into the intertidal area. 
C)  that an unfavorable environmental factor kept Balanus from extending higher into the intertidal area. 
D)  that Balanus is less motile than Chthamalus. 
E)  that Balanus is more motile than Chthamalus.

Question 18

Mycorrhizae are associations between:

Accepted Answer

A)  coral animals and dinoflagellates. 
B)  two types of insects. 
C)  fungi and plant roots. 
D)  wasps and orchids. 
E)  epiphytes and rainforest trees. 
A)  coral animals and dinoflagellates. 
B)  two types of insects. 
C)  fungi and plant roots. 
D)  wasps and orchids. 
E)  epiphytes and rainforest trees.

Question 19

An example of mutualism is:

Accepted Answer

A)  mycorrhizae and epiphytes. 
B)  epiphytes and tapeworms. 
C)  monarch and viceroy butterflies. 
D)  silverfish and army ants. 
E)  Rhizobium and legumes. 
A)  mycorrhizae and epiphytes. 
B)  epiphytes and tapeworms. 
C)  monarch and viceroy butterflies. 
D)  silverfish and army ants. 
E)  Rhizobium and legumes.

Question 20

MATCHING
a.restricts ecological niche species
d.finding common patterns and processes within the community
b.local environment in which a species lives
e.biological community and its abiotic environment
c.species' ecological role within the structure and function of a community
-ecological niche

Accepted Answer

The answer of MATCHING
a.restricts ecological niche species
d.finding common patterns and...

Exam 54: Community Ecology

Discuss coevolution as it relates to predator-prey interactions.Include a brief discussion of two specific examples.

Many poisonous snakes share warning colors of red, yellow, and black.This is an example of:

Which habitat would be expected to have the greatest species richness?

The community found on a rotting log would not include:

Large-scale experiments conducted in oak forests of the northeastern United States linked bumper acorn crops to booming mouse populations.The conclusion from these experiments is that:

Species richness is __________ when any one species enjoys a position of dominance.

Competition between species 1 and species 2 is beneficial for species 1 and harmful for species 2. ____________________

Adaptations that exert a strong competitive force on a predator are the result of coevolution. ____________________

Which of the following is not a community?

The realized niche for the green anole was determined by:

Traditionally, most ecologists have assumed that community stability is a consequence of:

Resource partitioning may include all of the following except:

The almost complete loss of the American chestnut tree to the chestnut blight fungus had __________ ecological impact on the moderately diverse Appalachian woodlands of which it was formerly a part.

In ecosystems bottom up processes, predators affect the abundances of other populations in the ecological community. ____________________

In which of the following habitat types would species diversity be expected to be relatively low?

Figure 54-1 Use the figure to answer the corresponding question(s). -In Experimental Condition 1 of Figure 54-1, the distribution of Balanus suggests:

Mycorrhizae are associations between:

An example of mutualism is:

MATCHING a.restricts ecological niche species d.finding common patterns and processes within the community b.local environment in which a species lives e.biological community and its abiotic environment c.species' ecological role within the structure and function of a community -ecological niche

A View of Life

Atoms and Molecules: the Chemical Basis of Life

The Chemistry of Life: Organic Compounds

Organization of the Cell

Biological Membranes

Cell Communication

Energy and Metabolism

How Cells Make Atp: Energy-Releasing Pathways

Photosynthesis: Capturing Light Energy

Chromosomes, Mitosis, and Meiosis

The Basic Principles of Heredity

Dna: the Carrier of Genetic Information

Gene Expression

Gene Regulation

Dna Technology and Genomics

Human Genetics and the Human Genome

Developmental Genetics

Introduction to Darwinian Evolution

Evolutionary Change in Populations

Speciation and Macroevolution

The Origin and Evolutionary History of Life

The Evolution of Primates

Understanding Diversity: Systematics

Viruses and Subviral Agents

Bacteria and Archaea

Protists

Seedless Plants

Seed Plants

The Fungi

An Introduction to Animal Diversity

Sponges, Cnidarians, Ctenophores, and Protostomes

The Deuterostomes

Plant Structure, Growth, and Development

Leaf Structure and Function

Stem Structure and Transport

Roots and Mineral Nutrition

Reproduction in Flowering Plants

Plant Developmental Responses to External and Internal Signals

Animal Structure and Function: an Introduction

Protection, Support, and Movement

Neural Signaling

Neural Regulation

Sensory Systems

Internal Transport

The Immune System: Internal Defense

Gas Exchange

Processing Food and Nutrition

Osmoregulation and Disposal of Metabolic Wastes

Endocrine Regulation

Reproduction

Animal Development

Animal Behavior

Introduction to Ecology: Population Ecology

Ecosystems and the Biosphere

Ecology and the Geography of Life

Biological Diversity and Conservation Biology

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