Question 1

Energy flow in an ecosystem is

Accepted Answer

A)  cyclical. 
B)  one-way. 
C)  two-way. 
D)  reversible under different conditions. 
E)  dependent on the organisms in the ecosystem. 
A)  cyclical. 
B)  one-way. 
C)  two-way. 
D)  reversible under different conditions. 
E)  dependent on the organisms in the ecosystem.

Question 2

Decomposers perform their recycling efforts on organisms

Accepted Answer

A)  at the end of a food chain. 
B)  on the top of a pyramid. 
C)  that are producers. 
D)  that are consumers. 
E)  all of these. 
A)  at the end of a food chain. 
B)  on the top of a pyramid. 
C)  that are producers. 
D)  that are consumers. 
E)  all of these.

Question 3

Match between columns
                        Premises: mushrooms
gross primary production
net primary production
biological magnification
legumes
primary productivity
webs

Accepted Answer

The Answer of interconnected food chains and the potential chemical is...

Question 4

Which of the following are NOT heterotrophs?

Accepted Answer

A)  primary carnivores 
B)  herbivores 
C)  secondary carnivores 
D)  decomposers 
E)  all of these are heterotrophs 
A)  primary carnivores 
B)  herbivores 
C)  secondary carnivores 
D)  decomposers 
E)  all of these are heterotrophs

Question 5

The climax community

Accepted Answer

A)  is formed by species with the greatest range of environmental tolerance. 
B)  is the most common community found in an area. 
C)  changes over time. 
D)  is well adapted to the climate and persists until the climate changes. 
E)  is seasonal. 
A)  is formed by species with the greatest range of environmental tolerance. 
B)  is the most common community found in an area. 
C)  changes over time. 
D)  is well adapted to the climate and persists until the climate changes. 
E)  is seasonal.

Question 6

After a shipwreck you are alone on a deserted island with a pair of pigs and a large supply of corn. Your best strategy would be to

Accepted Answer

A)  feed the corn to the pigs and feed upon their offspring. 
B)  kill the pigs immediately and then eat the corn. 
C)  share the corn with the pigs, and then eat the pigs when the corn is gone. 
D)  plant all the corn, and then feed it to the pigs. 
E)  eat the corn alternating with the pork. 
A)  feed the corn to the pigs and feed upon their offspring. 
B)  kill the pigs immediately and then eat the corn. 
C)  share the corn with the pigs, and then eat the pigs when the corn is gone. 
D)  plant all the corn, and then feed it to the pigs. 
E)  eat the corn alternating with the pork.

Question 7

All of the populations of different species that occupy and are adapted to a given area are referred to by which term?

Accepted Answer

A)  biosphere 
B)  community 
C)  ecosystem 
D)  niche 
E)  habitat 
A)  biosphere 
B)  community 
C)  ecosystem 
D)  niche 
E)  habitat

Question 8

Decomposers

Accepted Answer

A)  are able to enter a food chain at any trophic level. 
B)  are the most numerous organisms in an ecosystem. 
C)  include bacteria and fungi. 
D)  can occupy numerous habitats. 
E)  all of these. 
A)  are able to enter a food chain at any trophic level. 
B)  are the most numerous organisms in an ecosystem. 
C)  include bacteria and fungi. 
D)  can occupy numerous habitats. 
E)  all of these.

Question 9

Factors that affect the final amount of stored energy in an ecosystem include all of the following EXCEPT

Accepted Answer

A)  the size of the producers. 
B)  the availability of mineral nutrients. 
C)  how much sunlight and rainfall are available during a growing season. 
D)  the temperature range. 
E)  the type of decomposers. 
A)  the size of the producers. 
B)  the availability of mineral nutrients. 
C)  how much sunlight and rainfall are available during a growing season. 
D)  the temperature range. 
E)  the type of decomposers.

Question 10

Selecting the Exception Four of the five answers listed below are heterotrophic. Select the exception.

Accepted Answer

A)  consumers 
B)  carnivores 
C)  herbivores 
D)  parasites 
E)  producers 
A)  consumers 
B)  carnivores 
C)  herbivores 
D)  parasites 
E)  producers

Question 11

When Shakespeare wrote about the world as a stage and each of us being players, he was unknowingly referring to the biological concept of

Accepted Answer

A)  succession. 
B)  the niche. 
C)  different habitats. 
D)  feeding levels. 
E)  interspecific competition. 
A)  succession. 
B)  the niche. 
C)  different habitats. 
D)  feeding levels. 
E)  interspecific competition.

Question 12

Which is NOT part of the nitrogen cycle?

Accepted Answer

A)  denitrification 
B)  deammonification 
C)  nitrogen fixation 
D)  ammonification 
E)  uptake by autotrophs 
A)  denitrification 
B)  deammonification 
C)  nitrogen fixation 
D)  ammonification 
E)  uptake by autotrophs

Question 13

The study of the interactions of organisms and their physical environment is

Accepted Answer

A)  biology. 
B)  ecology. 
C)  geology. 
D)  paleontology. 
E)  physiology. 
A)  biology. 
B)  ecology. 
C)  geology. 
D)  paleontology. 
E)  physiology.

Question 14

The greatest concentration of nitrogen on the planet Earth is found in

Accepted Answer

A)  living organisms, including bacteria. 
B)  the atmosphere. 
C)  soil minerals. 
D)  fossil fuels. 
E)  oceans. 
A)  living organisms, including bacteria. 
B)  the atmosphere. 
C)  soil minerals. 
D)  fossil fuels. 
E)  oceans.

Question 15

The plants and animals now present on acreage from which the trees were removed ten years earlier represent

Accepted Answer

A)  primary succession. 
B)  a climax forest. 
C)  pioneer species. 
D)  secondary succession. 
E)  species introductions. 
A)  primary succession. 
B)  a climax forest. 
C)  pioneer species. 
D)  secondary succession. 
E)  species introductions.

Question 16

The biomass of a community is the weight of the

Accepted Answer

A)  material decomposed in a year. 
B)  producers. 
C)  living organisms. 
D)  consumers. 
E)  decomposers. 
A)  material decomposed in a year. 
B)  producers. 
C)  living organisms. 
D)  consumers. 
E)  decomposers.

Question 17

Secondary succession is likely to occur

Accepted Answer

A)  in a deciduous forest. 
B)  on an eroded, bare hillside. 
C)  in an abandoned field. 
D)  in a deciduous forest and on an eroded, bare hillside. 
E)  in a deciduous forest, on an eroded, bare hillside, or in an abandoned field. 
A)  in a deciduous forest. 
B)  on an eroded, bare hillside. 
C)  in an abandoned field. 
D)  in a deciduous forest and on an eroded, bare hillside. 
E)  in a deciduous forest, on an eroded, bare hillside, or in an abandoned field.

Question 18

How does carbon buried in deep ocean sediments return back to the surface?

Accepted Answer

A)  it floats to the surface 
B)  it is brought up by fish 
C)  storms stir up the ocean bottom 
D)  wave motion brings it up 
E)  uplifting of the sea floor 
A)  it floats to the surface 
B)  it is brought up by fish 
C)  storms stir up the ocean bottom 
D)  wave motion brings it up 
E)  uplifting of the sea floor

Question 19

At the top of a pyramid of biomass are the

Accepted Answer

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

Question 20

Which of the following does NOT cycle through an ecosystem?

Accepted Answer

A)  water 
B)  carbon 
C)  energy 
D)  phosphorus 
E)  nitrogen 
A)  water 
B)  carbon 
C)  energy 
D)  phosphorus 
E)  nitrogen

Exam 24: Principles of Ecology

Energy flow in an ecosystem is

Decomposers perform their recycling efforts on organisms

Which of the following are NOT heterotrophs?

The climax community

After a shipwreck you are alone on a deserted island with a pair of pigs and a large supply of corn. Your best strategy would be to

All of the populations of different species that occupy and are adapted to a given area are referred to by which term?

Decomposers

Factors that affect the final amount of stored energy in an ecosystem include all of the following EXCEPT

Selecting the Exception Four of the five answers listed below are heterotrophic. Select the exception.

When Shakespeare wrote about the world as a stage and each of us being players, he was unknowingly referring to the biological concept of

Which is NOT part of the nitrogen cycle?

The study of the interactions of organisms and their physical environment is

The greatest concentration of nitrogen on the planet Earth is found in

The plants and animals now present on acreage from which the trees were removed ten years earlier represent

The biomass of a community is the weight of the

Secondary succession is likely to occur

How does carbon buried in deep ocean sediments return back to the surface?

At the top of a pyramid of biomass are the

Which of the following does NOT cycle through an ecosystem?

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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