Question 1

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

Question 2

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

Question 3

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)  tundra 
A)  taiga 
B)  tropical rainforest 
C)  temperate rainforest 
D)  prairie 
E)  tundra

Question 4

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

Question 5

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 reef 
A)  temperate grasslands 
B)  tundra 
C)  savannah 
D)  tropical rainforest 
E)  coral reef

Question 6

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

Question 7

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. 
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.

Question 8

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

Question 9

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 fuels 
A)  carbon dioxide 
B)  calcium carbonate 
C)  bicarbonate ions 
D)  carbon monoxide 
E)  fossil fuels

Question 10

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. 
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.

Exam 31: Communities and Ecosystems

Biomes are defined by

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

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

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

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

Which of the following has the slowest phosphate transfer rate?

Which of the following is an inaccurate statement about ecosystems?

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

What is the source of carbon for most aquatic organisms?

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?

Biology: the Science of Life

The Chemical Basis of Life

The Organic Molecules of Life

Inside the Cell

The Dynamic Cell

Energy for Life

Energy for Cells

Cellular Reproduction

Meiosis and the Genetic Basis of Sexual Reproduction

Patterns of Inheritance

Dna Biology

Biotechnology and Genomics

Mutations and Genetic Testing

Darwin and Evolution

Evolution on a Small Scale

Evolution on a Large Scale

Viruses, Bacteria, and Protists

Plants and Fungi

Animals

Plant Anatomy and Growth

Plant Responses and Reproduction

Being Organized and Steady

The Transport Systems

The Maintenance Systems

Digestion and Human Nutrition

Defenses Against Disease

The Control Systems

Sensory Input and Motor Output

Reproduction and Embryonic Development

Ecology and Populations

Human Impact on the Biosphere

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