Question 1

Which of the following has the slowest phosphate transfer rate?

Accepted Answer

A)   runoff
B)   decomposition of plants and animals
C)   mining
D)   weathering of rocks
E)   fertilizersF) A) and B)
G) C) and E)

Question 2

The physical space that an organism occupies in its environment is its

Accepted Answer

A)   habitat.
B)   niche.
C)   biotic factor.
D)   role.
E)   abiotic factor.F) B) and E)
G) A) and E)

Question 3

Water is a major limiting factor in which of the following biomes?

Accepted Answer

A)   temperate grasslands
B)   tundra
C)   savannah
D)   tropical rainforest
E)   coral reefF) B) and D)
G) All of the above

Question 4

What is the source of carbon for most aquatic organisms?

Accepted Answer

A)   carbon dioxide
B)   calcium carbonate
C)   bicarbonate ions
D)   carbon monoxide
E)   fossil fuelsF) A) and D)
G) All of the above

Question 5

The first pioneer species to appear in an area undergoing secondary succession is

Accepted Answer

A)   an equilibrium species.
B)   long-lived.
C)   able to produce numerous offspring.
D)   a secondary consumer.
E)   slow to reach sexual maturity.F) B) and E)
G) A) and E)

Question 6

The most exclusive level of biological organization that is listed below is

Accepted Answer

A)   ecosystems.
B)   biomes.
C)   the biosphere.
D)   communities.
E)   populations.F) A) and B)
G) A) and C)

Question 7

As humans continue to use fossil fuels as a primary source of energy, the amount of carbon entering the atmosphere from fossil fuel combustion will continue to increase dramatically. What is the effect of large-scale deforestation on the carbon in the atmosphere?

Accepted Answer

A)   Because trees are a major sink for atmospheric carbon, fewer trees will result in less carbon being removed from the atmosphere for photosynthesis.
B)   As trees are removed, there is more room for carbon to enter the soil directly and be used by other plants.
C)   The large-scale removal of forests does not have any real effect on atmospheric carbon, because carbon dioxide is not stored in trees.
D)   Because trees produce carbon dioxide, the amount of carbon in the atmosphere will decrease with their wide-scale removal.E) A) and B)
F) None of the above

Question 8

Which of the following is an inaccurate statement about ecosystems?

Accepted Answer

A)   chemicals are constantly recycled and reused.
B)   chemicals are converted from one form to another.
C)   energy is constantly recycled.
D)   energy is required continuously because some energy is lost.
E)   the ultimate source of energy is the sun.F) C) and D)
G) B) and C)

Question 9

Which of the following terrestrial ecosystems is a very cold northern coniferous forest?

Accepted Answer

A)   taiga
B)   tropical rainforest
C)   temperate rainforest
D)   prairie
E)   tundraF) B) and C)
G) B) and D)

Question 10

Biomes are defined by

Accepted Answer

A)   their size.
B)   types of animals.
C)   communities.
D)   temperature and rainfall.
E)   plants, animals, and inorganic matter.F) A) and E)
G) C) and D)

Exam 31: Communities and Ecosystems

Water is a major limiting factor in which of the following biomes?

Correct Answer
verified

What is the source of carbon for most aquatic organisms?

Correct Answer
verified

Which of the following is an inaccurate statement about ecosystems?

Correct Answer
verified

Biomes are defined by

Correct Answer
verified

Which of the following has the slowest phosphate transfer rate?

Correct Answer
verified

The most exclusive level of biological organization that is listed below is

Correct Answer
verified

The physical space that an organism occupies in its environment is its

Correct Answer
verified

As humans continue to use fossil fuels as a primary source of energy, the amount of carbon entering the atmosphere from fossil fuel combustion will continue to increase dramatically. What is the effect of large-scale deforestation on the carbon in the atmosphere?

Correct Answer
verified

The first pioneer species to appear in an area undergoing secondary succession is

Correct Answer
verified

Which of the following terrestrial ecosystems is a very cold northern coniferous forest?

Correct Answer
verified

Exam 31: Communities and Ecosystems

Water is a major limiting factor in which of the following biomes?

Correct AnswerverifiedShow Answer

What is the source of carbon for most aquatic organisms?

Correct AnswerverifiedShow Answer

Which of the following is an inaccurate statement about ecosystems?

Correct AnswerverifiedShow Answer

Biomes are defined by

Correct AnswerverifiedShow Answer

Which of the following has the slowest phosphate transfer rate?

Correct AnswerverifiedShow Answer

The most exclusive level of biological organization that is listed below is

Correct AnswerverifiedShow Answer

The physical space that an organism occupies in its environment is its

Correct AnswerverifiedShow Answer

As humans continue to use fossil fuels as a primary source of energy, the amount of carbon entering the atmosphere from fossil fuel combustion will continue to increase dramatically. What is the effect of large-scale deforestation on the carbon in the atmosphere?

Correct AnswerverifiedShow Answer

The first pioneer species to appear in an area undergoing secondary succession is

Correct AnswerverifiedShow Answer

Which of the following terrestrial ecosystems is a very cold northern coniferous forest?

Correct AnswerverifiedShow Answer

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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