Question 1

All of the following are types of symbiosis except

Accepted Answer

A)  commensalism.
B)  camouflage.
C)  predation.
D)  parasitism.
E)  mutualism.F) A) and B)
G) B) and D)

Question 2

Cardiac glycosides,molecules causing a drastic effect on vertebrate heart function,are produced as defense chemicals by plants,which belong to

Accepted Answer

A)  the milkweed and dogbane families.
B)  the mustard family.
C)  grasses.
D)  poison ivy,oak,and sumac.
E)  the bean family.F) B) and D)
G) A) and B)

Question 3

No two species can occupy the same niche indefinitely without competition driving one to _________.

Accepted Answer

A)  migrate
B)  overpopulate
C)  speciation
D)  extinctionE) A) and B)
F) A) and C)

Question 4

In studies of two species of barnacles in the marine intertidal zone it was observed that Chthamalus can live in the upper intertidal zone and the lower intertidal zone if Semibalanus is absent,and Semibalanus can only live in the lower zone because it is more subject to dehydration.Based on this,which of the following statements is false?

Accepted Answer

A)  The realized niches of the two species differ.
B)  The fundamental niche of Chthamalus is larger than its realized niche.
C)  The fundamental niche of Chthamalus is larger than the fundamental niche of Semibalanus.
D)  The fundamental and the realized niches of Chthamalus are the same.
E)  The fundamental and the realized niches of Semibalanus are the samE.F) A) and E)
G) All of the above

Question 5

The pattern of living or the function of an organism in a community is called its

Accepted Answer

A)  niche.
B)  habitat.
C)  hierarchy.
D)  speciation.
E)  predation.F) A) and D)
G) C) and D)

Question 6

Which statement is the correct interpretation of the graph?

Accepted Answer

A)  The population of Didinium goes extinct with the addition of Paramecium on day 4.
B)  The population of Didinium continues to increase and remains high even after the extinction of the Paramecium.
C)  The population of Paramecium goes extinct with the addition of Didinium on day 8.
D)  The population of Didinium increased but then went extinct after the population of Paramecium went extinct.
E)  The population of Didinium is able to increase at the expense of the Paramecium population.After a brief period both populations are able to coexist.F) C) and E)
G) B) and E)

Question 7

The dynamic processes that are of critical importance in succession involve all of the following except

Accepted Answer

A)  tolerance.
B)  facilitation.
C)  inhibition.
D)  competitive exclusion.
E)  disturbancE.F) C) and E)
G) All of the above

Question 8

Alligators excavate holes in the bottom of bodies of water.During times of severe drought these holes act as refugia for various aquatic organisms that might perish if there were no water available.Thus,alligators in this system can be classified as a(n)

Accepted Answer

A)  keystone species.
B)  symbiotic species.
C)  sympatric species.
D)  allopatric species.
E)  refugistic species.F) B) and C)
G) D) and E)

Question 9

Cattle egrets follow African ungulates such as African buffalo around and catch insects that the buffalo flush.Oxpeckers perch on the backs of buffalo and feed on ectoparasites that infest the buffalo.Which one of the following shows the ecological interaction that the buffalo has with each bird?

Accepted Answer

A)  cattle egret: mutualism;oxpecker: commensalism
B)  cattle egret: commensalism;oxpecker: mutualism
C)  cattle egret: competition;oxpecker: mutualism
D)  cattle egret: mutualism;oxpecker: mutualism
E)  cattle egret: commensalism;oxpecker: commensalismF) A) and B)
G) A) and C)

Question 10

Two of Darwin's finches display a character displacement when they occur as sympatric species.Which of the statements correctly interprets the graph?

Accepted Answer

A)  Both species have the same size beak on Santa Maria Island.
B)  Both species have the same size beaks on Daphne Major.
C)  Both species have the same size beaks on Los Hermanos Island.
D)  The two species have different beak sizes when they occur on the same islanD.
E)  The two species feed on different food resources;one feeds on seeds while the other feeds on insects.F) None of the above
G) A) and B)

Question 11

Animals defend themselves against predators by all of the following except

Accepted Answer

A)  warning coloration.
B)  cryptic coloration.
C)  chemical defenses such as poisons and stings.
D)  parasitism.
E)  aposematic coloration.F) A) and C)
G) A) and E)

Question 12

Succession happens because species in the habitat alter that habitat in ways that assist other species.There are three dynamic concepts that are of critical importance for succession to take place.They are

Accepted Answer

A)  facilitation,inhibition,and tolerance.
B)  symbiotic relationships,facilitation,and aposematic coloration.
C)  mimicry,coevolution,and competitive exclusion.
D)  competition,climax communities,and tolerance.
E)  competition,inhibition,and coevolution.F) A) and E)
G) A) and B)

Question 13

Chemical defenses are found in all of the following except

Accepted Answer

A)  marine animals.
B)  insects.
C)  plants.
D)  snakes,spiders,and fishes.
E)  Batesian mimics.F) D) and E)
G) B) and C)

Question 14

The difference in the fundamental niche and the realized niche is

Accepted Answer

A)  the fundamental niche is the actual niche that a species occupies while the realized niche is not.
B)  the fundamental niche is the entire niche that a species is capable of using while the realized niche is just what is being occupied.
C)  the fundamental niche is smaller than the realized niche.
D)  the realized niche is theoretical while the fundamental niche is the entire niche that an organism can use.E) None of the above
F) All of the above

Question 15

Which of the following statements about the fundamental and realized niche is false?

Accepted Answer

A)  A species' realized niche could be the same size as its fundamental niche.
B)  A species' realized niche could be smaller than its fundamental niche.
C)  A species' fundamental niche can be smaller than its realized niche.
D)  The extent of the realized niche is determined,in part,by intraspecific completion.
E)  The extent of the fundamental niche is determined,in part,by conditions of the physical environment.F) A) and B)
G) C) and E)

Question 16

A species that interacts in critical ways with many other elements of an ecosystem is called a ___________ species.

Accepted Answer

A)  predatory
B)  keystone
C)  primary
D)  dominant
E)  succeedingF) All of the above
G) A) and D)

Question 17

Which statement correctly interprets the graph?

Accepted Answer

A)  Paramecium caudatum drives Paramecium aurelia to near extinction.
B)  Paramecium aurelia drives Paramecium caudatum to near extinction.
C)  Paramecium caudatum and Paramecium aurelia are able to compete for the same resource and their population densities are not affected.
D)  Paramecium caudatum and Paramecium aurelia are unable to exist and both populations go extinct after 24 days.E) B) and C)
F) A) and B)

Question 18

You collect data on growth of two different species (A and B) when grown by themselves and with each other.Which one of the following comparisons would best show the effect of only interspecific on species B?

Accepted Answer

A)  the growth of species A when with species B
B)  the growth of species B when with species A
C)  the growth of species B alone with its grown when with A
D)  the growth of species A alone with its grown when with B
E)  the growth of species A with B compared with the growth of species B with AF) All of the above
G) B) and D)

Question 19

In this relationship,one organism serves as a host to another organism,usually to the host's disadvantage.

Accepted Answer

A)  predation
B)  parasitism
C)  mutualism
D)  commensalism
E)  symbioticF) B) and E)
G) A) and B)

Question 20

The way in which an organism utilizes its environment may be called

Accepted Answer

A)  resource partitioning.
B)  its habitat.
C)  competitive exclusion.
D)  intraspecific competition.
E)  its nichE.F) A) and B)
G) B) and E)

Exam 57: Community of Ecology

The difference in the fundamental niche and the realized niche is

Correct Answer
verified

Animals defend themselves against predators by all of the following except

Correct Answer
verified

No two species can occupy the same niche indefinitely without competition driving one to _________.

Correct Answer
verified

In this relationship,one organism serves as a host to another organism,usually to the host's disadvantage.

Correct Answer
verified

Which of the following statements about the fundamental and realized niche is false?

Correct Answer
verified

The way in which an organism utilizes its environment may be called

Correct Answer
verified

You collect data on growth of two different species (A and B) when grown by themselves and with each other.Which one of the following comparisons would best show the effect of only interspecific on species B?

Correct Answer
verified

The dynamic processes that are of critical importance in succession involve all of the following except

Correct Answer
verified

Cattle egrets follow African ungulates such as African buffalo around and catch insects that the buffalo flush.Oxpeckers perch on the backs of buffalo and feed on ectoparasites that infest the buffalo.Which one of the following shows the ecological interaction that the buffalo has with each bird?

Correct Answer
verified

Two of Darwin's finches display a character displacement when they occur as sympatric species.Which of the statements correctly interprets the graph?

Correct Answer
verified

Succession happens because species in the habitat alter that habitat in ways that assist other species.There are three dynamic concepts that are of critical importance for succession to take place.They are

Correct Answer
verified

Alligators excavate holes in the bottom of bodies of water.During times of severe drought these holes act as refugia for various aquatic organisms that might perish if there were no water available.Thus,alligators in this system can be classified as a(n)

Correct Answer
verified

Correct Answer
verified

The pattern of living or the function of an organism in a community is called its

Correct Answer
verified

Which statement is the correct interpretation of the graph?

Correct Answer
verified

Which statement correctly interprets the graph?

Correct Answer
verified

Chemical defenses are found in all of the following except

Correct Answer
verified

Cardiac glycosides,molecules causing a drastic effect on vertebrate heart function,are produced as defense chemicals by plants,which belong to

Correct Answer
verified

All of the following are types of symbiosis except

Correct Answer
verified

A species that interacts in critical ways with many other elements of an ecosystem is called a ___________ species.

Correct Answer
verified

Exam 57: Community of Ecology

The difference in the fundamental niche and the realized niche is

Correct AnswerverifiedShow Answer

Animals defend themselves against predators by all of the following except

Correct AnswerverifiedShow Answer

No two species can occupy the same niche indefinitely without competition driving one to _________.

Correct AnswerverifiedShow Answer

In this relationship,one organism serves as a host to another organism,usually to the host's disadvantage.

Correct AnswerverifiedShow Answer

Which of the following statements about the fundamental and realized niche is false?

Correct AnswerverifiedShow Answer

The way in which an organism utilizes its environment may be called

Correct AnswerverifiedShow Answer

You collect data on growth of two different species (A and B) when grown by themselves and with each other.Which one of the following comparisons would best show the effect of only interspecific on species B?

Correct AnswerverifiedShow Answer

The dynamic processes that are of critical importance in succession involve all of the following except

Correct AnswerverifiedShow Answer

Cattle egrets follow African ungulates such as African buffalo around and catch insects that the buffalo flush.Oxpeckers perch on the backs of buffalo and feed on ectoparasites that infest the buffalo.Which one of the following shows the ecological interaction that the buffalo has with each bird?

Correct AnswerverifiedShow Answer

Two of Darwin's finches display a character displacement when they occur as sympatric species.Which of the statements correctly interprets the graph?

Correct AnswerverifiedShow Answer

Succession happens because species in the habitat alter that habitat in ways that assist other species.There are three dynamic concepts that are of critical importance for succession to take place.They are

Correct AnswerverifiedShow Answer

Alligators excavate holes in the bottom of bodies of water.During times of severe drought these holes act as refugia for various aquatic organisms that might perish if there were no water available.Thus,alligators in this system can be classified as a(n)

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

The pattern of living or the function of an organism in a community is called its

Correct AnswerverifiedShow Answer

Which statement is the correct interpretation of the graph?

Correct AnswerverifiedShow Answer

Which statement correctly interprets the graph?

Correct AnswerverifiedShow Answer

Chemical defenses are found in all of the following except

Correct AnswerverifiedShow Answer

Cardiac glycosides,molecules causing a drastic effect on vertebrate heart function,are produced as defense chemicals by plants,which belong to

Correct AnswerverifiedShow Answer

All of the following are types of symbiosis except

Correct AnswerverifiedShow Answer

A species that interacts in critical ways with many other elements of an ecosystem is called a ___________ species.

Correct AnswerverifiedShow Answer

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