Question 1

Most atmospheric carbon is in the form of

Accepted Answer

A)  carbon dioxide. 
B)  carbon monoxide. 
C)  hydrocarbons. 
D)  carbon tetrachloride. 
E)  carbonic acid. 
A)  carbon dioxide. 
B)  carbon monoxide. 
C)  hydrocarbons. 
D)  carbon tetrachloride. 
E)  carbonic acid.

Question 2

Most of the energy available to a primary consumer

Accepted Answer

A)  will be used up in various biological activities. 
B)  will be converted into biomass. 
C)  is obtained directly from solar energy. 
D)  will be passed on to the animal that feeds upon it. 
E)  will remain with the consumer until death. 
A)  will be used up in various biological activities. 
B)  will be converted into biomass. 
C)  is obtained directly from solar energy. 
D)  will be passed on to the animal that feeds upon it. 
E)  will remain with the consumer until death.

Question 3

The difference between gross primary productivity and net primary productivity is

Accepted Answer

A)  the amount of sunlight reflected by plants. 
B)  the rate of photosynthesis of autotrophs. 
C)  determined by the amount of energy used for plant life processes. 
D)  the rate of herbivorous consumption of autotrophs. 
E)  negligible. 
A)  the amount of sunlight reflected by plants. 
B)  the rate of photosynthesis of autotrophs. 
C)  determined by the amount of energy used for plant life processes. 
D)  the rate of herbivorous consumption of autotrophs. 
E)  negligible.

Question 4

A process in which nitrogenous waste products or organic remains of organisms are decomposed by soil bacteria and fungi that use the amino acids being released for their own growth and release the excess as NH3 or NH4 is

Accepted Answer

A)  nitrification. 
B)  ammonification. 
C)  denitrification. 
D)  nitrogen fixation. 
E)  hydrogenation. 
A)  nitrification. 
B)  ammonification. 
C)  denitrification. 
D)  nitrogen fixation. 
E)  hydrogenation.

Question 5

The pyramid of energy is

Accepted Answer

A)  a demonstration of the first law of thermodynamics. 
B)  a result of the decline in the energy available as energy travels through the trophic levels. 
C)  fundamentally different from the pyramid of biomass and the pyramid of numbers. 
D)  just one of the manifestations of competition. 
E)  is a calculation of the energy gained at each level. 
A)  a demonstration of the first law of thermodynamics. 
B)  a result of the decline in the energy available as energy travels through the trophic levels. 
C)  fundamentally different from the pyramid of biomass and the pyramid of numbers. 
D)  just one of the manifestations of competition. 
E)  is a calculation of the energy gained at each level.

Question 6

When comparing specialist species with generalist species, it may be said that

Accepted Answer

A)  generalist species will survive in fewer habitats than specialist species. 
B)  generalist species are at a disadvantage when comparing niches. 
C)  generalist species will most likely be at an advantage when it comes to adaptation in situations where the environment is changing. 
D)  specialist species have a more diverse nutritional source list. 
E)  specialist species exhibit a broad range of habitats. 
A)  generalist species will survive in fewer habitats than specialist species. 
B)  generalist species are at a disadvantage when comparing niches. 
C)  generalist species will most likely be at an advantage when it comes to adaptation in situations where the environment is changing. 
D)  specialist species have a more diverse nutritional source list. 
E)  specialist species exhibit a broad range of habitats.

Question 7

Where is the biomass pyramid upside-down?

Accepted Answer

A)  among birds 
B)  in forest habitats 
C)  in tundra habitats 
D)  in a pond or a sea 
E)  in prairie habitats 
A)  among birds 
B)  in forest habitats 
C)  in tundra habitats 
D)  in a pond or a sea 
E)  in prairie habitats

Question 8

Secondary succession occurs

Accepted Answer

A)  after a fire. 
B)  on a new sand dune. 
C)  on bare rock. 
D)  immediately after the formation of a man-made lake. 
E)  on a newly-formed volcanic island. 
A)  after a fire. 
B)  on a new sand dune. 
C)  on bare rock. 
D)  immediately after the formation of a man-made lake. 
E)  on a newly-formed volcanic island.

Question 9

A community differs from an ecosystem in that the former does NOT include

Accepted Answer

A)  unicellular organisms. 
B)  decomposers. 
C)  abiotic (nonliving) factors. 
D)  unicellular organisms and decomposers. 
E)  unicellular organisms, decomposers, and abiotic (nonliving) factors. 
A)  unicellular organisms. 
B)  decomposers. 
C)  abiotic (nonliving) factors. 
D)  unicellular organisms and decomposers. 
E)  unicellular organisms, decomposers, and abiotic (nonliving) factors.

Question 10

A network of interactions that involve the cycling of materials and the flow of energy between a community and its physical environment is which of the following?

Accepted Answer

A)  population 
B)  community 
C)  ecosystem 
D)  biosphere 
E)  species 
A)  population 
B)  community 
C)  ecosystem 
D)  biosphere 
E)  species

Question 11

Which of the following is the correct word meaning "to nourish"?

Accepted Answer

A)  tropic 
B)  trophic 
C)  topic 
D)  tophic 
E)  tropical 
A)  tropic 
B)  trophic 
C)  topic 
D)  tophic 
E)  tropical

Question 12

The movement of nutrient in the form of a gas takes place in which cycle?

Accepted Answer

A)  global water cycle 
B)  atmospheric cycles 
C)  sedimentary cycles 
D)  solar-plant cycle 
E)  all of these 
A)  global water cycle 
B)  atmospheric cycles 
C)  sedimentary cycles 
D)  solar-plant cycle 
E)  all of these

Most atmospheric carbon is in the form of

Most of the energy available to a primary consumer

The difference between gross primary productivity and net primary productivity is

A process in which nitrogenous waste products or organic remains of organisms are decomposed by soil bacteria and fungi that use the amino acids being released for their own growth and release the excess as NH₃ or NH₄ is

The pyramid of energy is

When comparing specialist species with generalist species, it may be said that

Where is the biomass pyramid upside-down?

Secondary succession occurs

A community differs from an ecosystem in that the former does NOT include

A network of interactions that involve the cycling of materials and the flow of energy between a community and its physical environment is which of the following?

Which of the following is the correct word meaning "to nourish"?

The movement of nutrient in the form of a gas takes place in which cycle?

Learning About Human Biology

Chemistry of Life

Cells and How They Work

Tissues, Organs, and Organ Systems

The Skeletal System

The Muscular System

Circulation: the Heart and Blood Vessels

Blood

Immunity and Disease

The Respiratory System

Digestion and Nutrition

The Urinary System

The Nervous System

Sensory Systems

The Endocrine System

Reproductive Systems

Development and Aging

Cell Reproduction

Introduction to Genetics

Chromosomes and Human Genetics

DNA, Genes, and Biotechnology

Genes and Disease: Cancer

Principles of Evolution

Human Impacts on the Biosphere

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Exam 24: Principles of Ecology

Most atmospheric carbon is in the form of

Most of the energy available to a primary consumer

The difference between gross primary productivity and net primary productivity is

A process in which nitrogenous waste products or organic remains of organisms are decomposed by soil bacteria and fungi that use the amino acids being released for their own growth and release the excess as NH3 or NH4 is

The pyramid of energy is

When comparing specialist species with generalist species, it may be said that

Where is the biomass pyramid upside-down?

Secondary succession occurs

A community differs from an ecosystem in that the former does NOT include

A network of interactions that involve the cycling of materials and the flow of energy between a community and its physical environment is which of the following?

Which of the following is the correct word meaning "to nourish"?

The movement of nutrient in the form of a gas takes place in which cycle?

Learning About Human Biology

Chemistry of Life

Cells and How They Work

Tissues, Organs, and Organ Systems

The Skeletal System

The Muscular System

Circulation: the Heart and Blood Vessels

Blood

Immunity and Disease

The Respiratory System

Digestion and Nutrition

The Urinary System

The Nervous System

Sensory Systems

The Endocrine System

Reproductive Systems

Development and Aging

Cell Reproduction

Introduction to Genetics

Chromosomes and Human Genetics

DNA, Genes, and Biotechnology

Genes and Disease: Cancer

Principles of Evolution

Human Impacts on the Biosphere

Filters

A process in which nitrogenous waste products or organic remains of organisms are decomposed by soil bacteria and fungi that use the amino acids being released for their own growth and release the excess as NH₃ or NH₄ is