Question 1

Consider the following food chain: hawk - rabbit - clover.Each species will contain a different amount of calories in its body (clover: 10 calories,rabbit: 500,and hawk: 1200) .Each species has a different daily caloric requirement (clover: sunlight,rabbit: 100 calories,hawk: 300) .How many clover plants,per day,does it take to support a family of hawks (Mom,dad,and juvenile.Assume each hawk needs the same number of calories per day.) ?

Accepted Answer

A)  approximately 1800 clover plants
B)  approximately 600 clover plants
C)  approximately 100 clover plants
D)  approximately 18,000 clover plants
E)  None,hawks do not eat clover plants.F) A) and B)
G) A) and C)

Question 2

The only heterotrophs required in an ecosystem are

Accepted Answer

A)  omnivores.
B)  herbivores.
C)  decomposers.
D)  autotrophs.
E)  carnivores.F) All of the above
G) B) and D)

Question 3

Two communities may have exactly the same number of species,yet one might be measured as having a greater species diversity.What defines species diversity?

Accepted Answer

A)  composition or a listing of the various species in a community
B)  a community and all of the abiotic factors associated with it
C)  the native species plus the introduced species
D)  the potential number of species that should exist in a community minus the species that have gone locally extinct
E)  both the number of species and the evenness or relative abundance of individuals of the different speciesF) A) and E)
G) A) and D)

Question 4

In an Asian rice paddy,carp eat decaying material from around the base of rice plants while a snail scrapes algae from the leaves,stems,and roots of the same plant.They can survive at the same time in the same rice paddy because they occupy

Accepted Answer

A)  the same habitat but different niches.
B)  the same habitat and the same niche.
C)  the same niche but different habitats.
D)  different habitats and different niches.E) C) and D)
F) B) and C)

Question 5

What does the model of island biogeography predict about:
A.the relationship between the distance of an island from the mainland and immigration of species? Draw a graph depicting the relationship.
B.the relationship between the size of an island and the rate of extinction? Draw a graph depicting the relationship.
C.what type of island will have a higher equilibrium species richness than the other types of islands? Combine (and draw)the two previous graphs and indicate the equilibrium species richness of each island.

Accepted Answer

A.The model of island geography predicts...

Question 6

Which of the following is NOT a greenhouse gas?

Accepted Answer

A)  carbon monoxide
B)  carbon dioxide
C)  CFCs
D)  ozone
E)  methaneF) A) and B)
G) A) and E)

Question 7

The relationship between plants and their pollinators is a good example of parasitism.

Accepted Answer

A) True 
 B)False  False

Question 8

Consider the consequences of a harmless prey that evolves toward mimicry of a model that has an antipredator defense (Batesian mimicry) .What happens to the effectiveness of this defense as more and more prey in the population are harmless mimics? Then consider what happens when a species with bad taste evolves to resemble a model that stings (Mullerian mimicry) .

Accepted Answer

A)  The number of Mullerian mimics is limited because they dilute the protection afforded by the warning color pattern,but the addition of more Batesian mimics only strengthens the protective mimicry complex.
B)  The increased number of Batesian mimics dilutes or weakens the protection afforded by the warning color pattern,but the addition of more Mullerian mimics only strengthens the protective mimicry complex.
C)  The number of both Batesian and Mullerian mimics is limited because both dilute the protection afforded by the warning color pattern.
D)  The number of both Batesian and Mullerian mimics is unlimited because they both reinforce the protection afforded by the warning color pattern.E) A) and D)
F) All of the above

Question 9

A community that contains a low species diversity will often have a high species richness.

Accepted Answer

A) True 
 B)False  False

Question 10

All of the abiotic conditions under which a species can survive when adverse biotic conditions are absent is known as its

Accepted Answer

A)  habitat.
B)  realized niche.
C)  fundamental niche.
D)  resource partition.E) A) and D)
F) B) and C) C

Question 11

Energy flow in an ecosystem is NOT cyclic because energy is

Accepted Answer

A)  destroyed as it is used.
B)  evenly spread out over many organisms.
C)  converted to many kinds of useful energy.
D)  increased as you go up the energy pyramid.
E)  converted to heat,which is no longer useful.F) C) and E)
G) None of the above

Question 12

A small marine amphipod has recently been discovered that carries a bad-tasting organism on its back,which is contrary to its normal behavior.If a fish ingests the pair,it immediately spits them back out.If the amphipod is alone,however,it is readily eaten.There is no apparent benefit or harm in this relationship for the "backpack" organism.This is probably a case of

Accepted Answer

A)  mutualism.
B)  parasitism.
C)  commensalism.
D)  competitive exclusion.E) A) and C)
F) B) and C)

Question 13

All the populations of all the different species interacting with one another in the same environment is called

Accepted Answer

A)  diversity.
B)  a community.
C)  an ecosystem.
D)  predation.
E)  symbiosis.F) All of the above
G) B) and D)

Question 14

Chemosynthetic producers obtain energy by the oxidation of ammonia,nitrites,and sulfides,using this energy to make organic compounds.

Accepted Answer

A) True 
 B)False

Question 15

What is the correct order of events during primary succession?

Accepted Answer

A)  Soil formation occurs - pioneer species enter the region - shrubs begin to grow - small trees begin to grow
B)  pioneer species enter the region - soil formation occurs - shrubs begin to grow - small trees begin to grow
C)  pioneer species enter the region - shrubs begin to grow - small trees begin to grow
D)  pioneer species enter the region - climax status is reached - small trees begin to growE) B) and D)
F) A) and D)

Question 16

Which type of succession would occur after a volcanic eruption?

Accepted Answer

A)  primary
B)  secondary
C)  tertiary
D)  There won't be any succession after a volcanic eruption.E) B) and C)
F) A) and C)

Question 17

Which of the following features is not part of the ecological niche of a white-tailed deer?

Accepted Answer

A)  the number of acorns it consumes during the fall
B)  the availability of woods for it to use as cover in order to escape from predators
C)  the presence of a water source within its habitat
D)  All of these are part of a white-tailed deer's ecological niche.E) A) and B)
F) A) and D)

Question 18

In order for a community to reach the status of climax community,succession must always begin with pioneer species.

Accepted Answer

A) True 
 B)False

Question 19

Consider the following food chain: hawk - rabbit - clover.Each species will contain a different amount of calories in its body (clover: 10 calories,rabbit: 500,and hawk: 1200) .Each species has a different daily caloric requirement (clover: sunlight,rabbit: 100 calories,hawk: 300) .How many clover plants,per day,does it take to support one hawk?

Accepted Answer

A)  approximately 600 clover plants
B)  approximately 30 clover plants
C)  approximately 60 clover plants
D)  approximately 3 clover plants
E)  None,clover plants do not support hawks.F) A) and E)
G) All of the above

Question 20

As animals take in food energy,approximately 10% of it is made available to the next level in the food chain.Which of the following is one of the ways in which the energy is used by the organism and not passed along?

Accepted Answer

A)  cellular respiration
B)  defecation
C)  excretion
D)  death
E)  All of these are ways in which the organism uses the energy.F) All of the above
G) A) and D)

Exam 45: Community and Ecosystem Ecology

Correct Answer
verified

The only heterotrophs required in an ecosystem are

Correct Answer
verified

Two communities may have exactly the same number of species,yet one might be measured as having a greater species diversity.What defines species diversity?

Correct Answer
verified

In an Asian rice paddy,carp eat decaying material from around the base of rice plants while a snail scrapes algae from the leaves,stems,and roots of the same plant.They can survive at the same time in the same rice paddy because they occupy

Correct Answer
verified

Correct Answer
verified
A.The model of island geography predicts...
View Answer

Which of the following is NOT a greenhouse gas?

Correct Answer
verified

The relationship between plants and their pollinators is a good example of parasitism.

Correct Answer
verified
False

Correct Answer
verified

A community that contains a low species diversity will often have a high species richness.

Correct Answer
verified
False

All of the abiotic conditions under which a species can survive when adverse biotic conditions are absent is known as its

Correct Answer
verified
C

Energy flow in an ecosystem is NOT cyclic because energy is

Correct Answer
verified

Correct Answer
verified

All the populations of all the different species interacting with one another in the same environment is called

Correct Answer
verified

Chemosynthetic producers obtain energy by the oxidation of ammonia,nitrites,and sulfides,using this energy to make organic compounds.

Correct Answer
verified

What is the correct order of events during primary succession?

Correct Answer
verified

Which type of succession would occur after a volcanic eruption?

Correct Answer
verified

Which of the following features is not part of the ecological niche of a white-tailed deer?

Correct Answer
verified

In order for a community to reach the status of climax community,succession must always begin with pioneer species.

Correct Answer
verified

Correct Answer
verified

As animals take in food energy,approximately 10% of it is made available to the next level in the food chain.Which of the following is one of the ways in which the energy is used by the organism and not passed along?

Correct Answer
verified

Exam 45: Community and Ecosystem Ecology

Correct AnswerverifiedShow Answer

The only heterotrophs required in an ecosystem are

Correct AnswerverifiedShow Answer

Two communities may have exactly the same number of species,yet one might be measured as having a greater species diversity.What defines species diversity?

Correct AnswerverifiedShow Answer

In an Asian rice paddy,carp eat decaying material from around the base of rice plants while a snail scrapes algae from the leaves,stems,and roots of the same plant.They can survive at the same time in the same rice paddy because they occupy

Correct AnswerverifiedShow Answer

Correct AnswerverifiedA.The model of island geography predicts...View AnswerShow Answer

Which of the following is NOT a greenhouse gas?

Correct AnswerverifiedShow Answer

The relationship between plants and their pollinators is a good example of parasitism.

Correct AnswerverifiedFalse

Correct AnswerverifiedShow Answer

A community that contains a low species diversity will often have a high species richness.

Correct AnswerverifiedFalse

All of the abiotic conditions under which a species can survive when adverse biotic conditions are absent is known as its

Correct AnswerverifiedC

Energy flow in an ecosystem is NOT cyclic because energy is

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

All the populations of all the different species interacting with one another in the same environment is called

Correct AnswerverifiedShow Answer

Chemosynthetic producers obtain energy by the oxidation of ammonia,nitrites,and sulfides,using this energy to make organic compounds.

Correct AnswerverifiedShow Answer

What is the correct order of events during primary succession?

Correct AnswerverifiedShow Answer

Which type of succession would occur after a volcanic eruption?

Correct AnswerverifiedShow Answer

Which of the following features is not part of the ecological niche of a white-tailed deer?

Correct AnswerverifiedShow Answer

In order for a community to reach the status of climax community,succession must always begin with pioneer species.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

As animals take in food energy,approximately 10% of it is made available to the next level in the food chain.Which of the following is one of the ways in which the energy is used by the organism and not passed along?

Correct AnswerverifiedShow Answer

Correct Answer
verified

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Correct Answer
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A.The model of island geography predicts...
View Answer

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False

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Correct Answer
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False

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C

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Correct Answer
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Correct Answer
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