Question 1

The species that appear in a climax community usually are short-lived,early-maturing,r-selected species that are strong competitors in a stable environment.

Accepted Answer

A) True 
 B)False

Question 2

The physical place where members of a population live is termed a

Accepted Answer

A)   competitive zone.
B)   community.
C)   habitat.
D)   symbiont.
E)   niche.F) C) and D)
G) B) and D)

Question 3

As temperatures in the Arctic rise,which of the following changes may occur?

Accepted Answer

A)   Tundra will be replaced by taiga.
B)   Taiga will be replaced by tundra.
C)   Temperate forest will be replaced by taiga.
D)   Tundra will be replaced by desert.
E)   Taiga will be replaced by temperate rain forest.F) B) and D)
G) A) and C)

Question 4

You go to the Boundary Waters Canoe Area (BWCA)  in Northern Minnesota. This ecosystem contains mostly coniferous and a few deciduous trees. It has mild winters and cool summers. It also receives plenty of rainfall.
-If global temperatures increase,which biome will the Boundary Waters Canoe Area (BWCA) turn into?

Accepted Answer

A)   tropical rainforest
B)   deciduous forest
C)   boreal forest
D)   short grass prairie
E)   tundraF) C) and D)
G) A) and B)

Question 5

At the equator,the Earth receives the

Accepted Answer

A)   maximum amount of solar radiation per unit area.
B)   minimum amount of solar radiation per unit area.
C)   maximum amount of solar radiation only over the ocean.
D)   maximum amount of solar radiation only over the land mass.
E)   None of the answer choices are correct.F) A) and D)
G) C) and D)

Question 6

In this system,the zooplankton are the

Accepted Answer

A)   tertiary consumers.
B)   secondary consumers.
C)   producers.
D)   decomposers.
E)   primary consumers.F) B) and D)
G) D) and E)

Question 7

Which of the following is not a characteristic of the tropical rain forest biome?

Accepted Answer

A)   warm climate
B)   nutrient-rich soil
C)   a year-round growing season for plants
D)   a tremendous diversity of animal life
E)   a location near the equatorF) All of the above
G) B) and E)

Question 8

A type of symbiosis in which one member of the relationship benefits with no effect on the other is

Accepted Answer

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

Question 9

________ bacteria return nitrogen to the atmosphere by converting nitrates to N₂.

Accepted Answer

A)   Nitrogen-fixing
B)   In nitrification,
C)   In denitrification,
D)   In transpiration,
E)   In respiration,F) A) and B)
G) A) and C)

Question 10

The total of all the resources,both biotic and abiotic,that a species exploits for its survival,growth,and reproduction is its

Accepted Answer

A)   competitive zone.
B)   habitat.
C)   food web.
D)   niche.
E)   biosphere.F) A) and B)
G) B) and D)

Question 11

You observe a situation in which a worm and a species of mustard grow better when both are present in an ecosystem,helping one another exploit resources.You are observing

Accepted Answer

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

Question 12

As an overall average,about ________ of the energy at one trophic level is generally available to the next highest rank in the food chain.

Accepted Answer

A)   2%
B)   10%
C)   4%
D)   7%
E)   20%F) C) and D)
G) B) and D)

Question 13

A grassland biome

Accepted Answer

A)   consists of mostly coniferous trees.
B)   has nutrient-rich soil.
C)   has many self-pollinating flowering plants.
D)   is warm and dry.
E)   consists of mosses and lichens.F) B) and E)
G) A) and B)

Question 14

Energy can be depleted within an ecosystem.

Accepted Answer

A) True 
 B)False

Question 15

If asked to put an arrow in a diagram showing energy flow through an ecosystem,you would use a single-headed arrow.

Accepted Answer

A) True 
 B)False

Question 16

The type of succession that occurs in an area where no community previously existed is ________ succession.

Accepted Answer

A)   keystone
B)   tertiary
C)   secondary
D)   climax
E)   primaryF) A) and C)
G) All of the above

Question 17

In the pyramid of energy,organisms that obtain their energy from only eating primary producers are called

Accepted Answer

A)   secondary producers.
B)   tertiary consumers.
C)   secondary consumers.
D)   tertiary producers.
E)   primary consumers.F) A) and B)
G) B) and C)

Question 18

When a tapeworm steals nutrients from the gut of a mammalian host,that symbiosis is called

Accepted Answer

A)   predation.
B)   mutualism.
C)   commensalism.
D)   parasitism.
E)   intraspecific competition.F) B) and E)
G) All of the above

Question 19

An organism's ________ is its position in the food chain relative to the ecosystem's energy source.

Accepted Answer

A)   habitat
B)   niche
C)   climax level
D)   trophic level
E)   keystone levelF) All of the above
G) B) and D)

Question 20

Along coastlines,the area between high tide and low tide is the

Accepted Answer

A)   open ocean.
B)   hydrothermal vent.
C)   intertidal zone.
D)   estuary.
E)   continental shelf.F) D) and E)
G) A) and E)

Exam 19: Communities and Ecosystems

In the pyramid of energy,organisms that obtain their energy from only eating primary producers are called

Correct Answer
verified

Energy can be depleted within an ecosystem.

Correct Answer
verified

Along coastlines,the area between high tide and low tide is the

Correct Answer
verified

At the equator,the Earth receives the

Correct Answer
verified

A type of symbiosis in which one member of the relationship benefits with no effect on the other is

Correct Answer
verified

In this system,the zooplankton are the

Correct Answer
verified

Correct Answer
verified

The type of succession that occurs in an area where no community previously existed is ________ succession.

Correct Answer
verified

A grassland biome

Correct Answer
verified

As an overall average,about ________ of the energy at one trophic level is generally available to the next highest rank in the food chain.

Correct Answer
verified

The total of all the resources,both biotic and abiotic,that a species exploits for its survival,growth,and reproduction is its

Correct Answer
verified

________ bacteria return nitrogen to the atmosphere by converting nitrates to N₂.

Correct Answer
verified

As temperatures in the Arctic rise,which of the following changes may occur?

Correct Answer
verified

When a tapeworm steals nutrients from the gut of a mammalian host,that symbiosis is called

Correct Answer
verified

If asked to put an arrow in a diagram showing energy flow through an ecosystem,you would use a single-headed arrow.

Correct Answer
verified

The physical place where members of a population live is termed a

Correct Answer
verified

An organism's ________ is its position in the food chain relative to the ecosystem's energy source.

Correct Answer
verified

You observe a situation in which a worm and a species of mustard grow better when both are present in an ecosystem,helping one another exploit resources.You are observing

Correct Answer
verified

Which of the following is not a characteristic of the tropical rain forest biome?

Correct Answer
verified

The species that appear in a climax community usually are short-lived,early-maturing,r-selected species that are strong competitors in a stable environment.

Correct Answer
verified

Exam 19: Communities and Ecosystems

In the pyramid of energy,organisms that obtain their energy from only eating primary producers are called

Correct AnswerverifiedShow Answer

Energy can be depleted within an ecosystem.

Correct AnswerverifiedShow Answer

Along coastlines,the area between high tide and low tide is the

Correct AnswerverifiedShow Answer

At the equator,the Earth receives the

Correct AnswerverifiedShow Answer

A type of symbiosis in which one member of the relationship benefits with no effect on the other is

Correct AnswerverifiedShow Answer

In this system,the zooplankton are the

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

The type of succession that occurs in an area where no community previously existed is ________ succession.

Correct AnswerverifiedShow Answer

A grassland biome

Correct AnswerverifiedShow Answer

As an overall average,about ________ of the energy at one trophic level is generally available to the next highest rank in the food chain.

Correct AnswerverifiedShow Answer

The total of all the resources,both biotic and abiotic,that a species exploits for its survival,growth,and reproduction is its

Correct AnswerverifiedShow Answer

________ bacteria return nitrogen to the atmosphere by converting nitrates to N₂.

Correct AnswerverifiedShow Answer

As temperatures in the Arctic rise,which of the following changes may occur?

Correct AnswerverifiedShow Answer

When a tapeworm steals nutrients from the gut of a mammalian host,that symbiosis is called

Correct AnswerverifiedShow Answer

If asked to put an arrow in a diagram showing energy flow through an ecosystem,you would use a single-headed arrow.

Correct AnswerverifiedShow Answer

The physical place where members of a population live is termed a

Correct AnswerverifiedShow Answer

An organism's ________ is its position in the food chain relative to the ecosystem's energy source.

Correct AnswerverifiedShow Answer

You observe a situation in which a worm and a species of mustard grow better when both are present in an ecosystem,helping one another exploit resources.You are observing

Correct AnswerverifiedShow Answer

Which of the following is not a characteristic of the tropical rain forest biome?

Correct AnswerverifiedShow Answer

The species that appear in a climax community usually are short-lived,early-maturing,r-selected species that are strong competitors in a stable environment.

Correct AnswerverifiedShow Answer

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