Question 1

Clear-cutting of forests:

Accepted Answer

A) Removes the carbon tied up in the vegetation 
B) Increases the rate of erosion 
C) Causes the depletion of soil nutrients 
D) All of the options are correct 
E) None of the options are correct 
A) Removes the carbon tied up in the vegetation 
B) Increases the rate of erosion 
C) Causes the depletion of soil nutrients 
D) All of the options are correct 
E) None of the options are correct

Question 2

About 20 percent of the energy passing from one trophic level to the next is lost.

Accepted Answer

A) True 
 B)False

Question 3

About 50% of photosynthesis activity takes place in fresh water.

Accepted Answer

A) True 
 B)False

Question 4

Polyploidy is an evolutionary mechanism that may result in

Accepted Answer

A) new plant species. 
B) a surge in birthrates in mammals. 
C) the baldness trait becoming dominant in men. 
D) death if recessive. 
A) new plant species. 
B) a surge in birthrates in mammals. 
C) the baldness trait becoming dominant in men. 
D) death if recessive.

Question 5

What is the term used to describe food chains which overlap and intersect?

Accepted Answer

A) food web 
B) detrital food chain 
C) natural selection 
D) range of tolerance 
A) food web 
B) detrital food chain 
C) natural selection 
D) range of tolerance

Question 6

Which of the following best matches the description?
-Competition between members of the same species.

Accepted Answer

A) denitrifying bacteria 
B) herbivore 
C) omnivore 
D) producer 
E) trophic level
F)community
G)ectoparasite
H)limiting factor
I)none of above
J)secondary consumer
K)nitrogen cycle
L)biomass
M)habitat
N)carbon cycle
O)interspecific competition
P)nitrogen-fixing bacteria
Q)intraspecific competition 
A) denitrifying bacteria 
B) herbivore 
C) omnivore 
D) producer 
E) trophic level
F)community
G)ectoparasite
H)limiting factor
I)none of above
J)secondary consumer
K)nitrogen cycle
L)biomass
M)habitat
N)carbon cycle
O)interspecific competition
P)nitrogen-fixing bacteria
Q)intraspecific competition

Question 7

Ecologists have traditionally categorized the roles of organisms in ecosystems into three broad categories that include

Accepted Answer

A) parasites. 
B) symbionts. 
C) decomposers. 
D) carnivores. 
A) parasites. 
B) symbionts. 
C) decomposers. 
D) carnivores.

Question 8

Which of the following best matches the description?
-Competition between members of different species.

Accepted Answer

A) denitrifying bacteria 
B) herbivore 
C) omnivore 
D) producer 
E) trophic level
F)community
G)ectoparasite
H)limiting factor
I)none of above
J)secondary consumer
K)nitrogen cycle
L)biomass
M)habitat
N)carbon cycle
O)interspecific competition
P)nitrogen-fixing bacteria
Q)intraspecific competition 
A) denitrifying bacteria 
B) herbivore 
C) omnivore 
D) producer 
E) trophic level
F)community
G)ectoparasite
H)limiting factor
I)none of above
J)secondary consumer
K)nitrogen cycle
L)biomass
M)habitat
N)carbon cycle
O)interspecific competition
P)nitrogen-fixing bacteria
Q)intraspecific competition

Question 9

What kind of plant has nitrogen-fixing bacteria living in their roots?

Accepted Answer

A) deciduous trees 
B) mosses 
C) legumes 
D) ferns 
A) deciduous trees 
B) mosses 
C) legumes 
D) ferns

Question 10

Indian pipe,a flowering plant,lacks chlorophyll and is not able to do photosynthesis.It obtains food as:

Accepted Answer

A) a parasite 
B) a commensal organism 
C) a host 
D) a mutualistic organism 
E) More than one of these choices is correct. 
A) a parasite 
B) a commensal organism 
C) a host 
D) a mutualistic organism 
E) More than one of these choices is correct.

Question 11

Why are nutrients carried into aquatic ecosystems?

Accepted Answer

The nutrients in fertilizers are intende

Question 12

This concept states that no two species can occupy the same ecological niche in the same place and the same time.

Accepted Answer

A) Natural Selection 
B) Genetic Drift 
C) Competitive Exclusion Principle 
D) Niche Exclusion 
A) Natural Selection 
B) Genetic Drift 
C) Competitive Exclusion Principle 
D) Niche Exclusion

Question 13

Natural selection is the process that determines

Accepted Answer

A) who an individual mates with. 
B) which scientist publishes their experiments. 
C) which individuals within a species will reproduce and pass their genes to the next generation. 
D) how active an animal is at night. 
A) who an individual mates with. 
B) which scientist publishes their experiments. 
C) which individuals within a species will reproduce and pass their genes to the next generation. 
D) how active an animal is at night.

Question 14

Everything that affects an organism during its lifetime is known as ecology.

Accepted Answer

A) True 
 B)False

Question 15

The development of herbicide resistance in populations of weeds over several generations is an example of

Accepted Answer

A) social Darwinism. 
B) biogeochemical cycles. 
C) organic farming. 
D) evolution. 
A) social Darwinism. 
B) biogeochemical cycles. 
C) organic farming. 
D) evolution.

Question 16

________ are a major carbon sink.

Accepted Answer

A) Oceans 
B) Lakes 
C) Rivers 
D) Ponds 
A) Oceans 
B) Lakes 
C) Rivers 
D) Ponds

Question 17

Which of the following best matches the description?
-Bacteria that convert nitrogen compounds in the soil into nitrogen gas.

Accepted Answer

A) denitrifying bacteria 
B) herbivore 
C) omnivore 
D) producer 
E) trophic level
F)community
G)ectoparasite
H)limiting factor
I)none of above
J)secondary consumer
K)nitrogen cycle
L)biomass
M)habitat
N)carbon cycle
O)interspecific competition
P)nitrogen-fixing bacteria
Q)intraspecific competition 
A) denitrifying bacteria 
B) herbivore 
C) omnivore 
D) producer 
E) trophic level
F)community
G)ectoparasite
H)limiting factor
I)none of above
J)secondary consumer
K)nitrogen cycle
L)biomass
M)habitat
N)carbon cycle
O)interspecific competition
P)nitrogen-fixing bacteria
Q)intraspecific competition

Question 18

If a species becomes isolated from another for a long time as a result of a barrier,speciation will not occur.

Accepted Answer

A) True 
 B)False

Question 19

Which of the following best matches the description?
-Bacteria that convert atmospheric nitrogen gas into forms of nitrogen that plants can use.

Accepted Answer

A) denitrifying bacteria 
B) herbivore 
C) omnivore 
D) producer 
E) trophic level
F)community
G)ectoparasite
H)limiting factor
I)none of above
J)secondary consumer
K)nitrogen cycle
L)biomass
M)habitat
N)carbon cycle
O)interspecific competition
P)nitrogen-fixing bacteria
Q)intraspecific competition 
A) denitrifying bacteria 
B) herbivore 
C) omnivore 
D) producer 
E) trophic level
F)community
G)ectoparasite
H)limiting factor
I)none of above
J)secondary consumer
K)nitrogen cycle
L)biomass
M)habitat
N)carbon cycle
O)interspecific competition
P)nitrogen-fixing bacteria
Q)intraspecific competition

Question 20

The primary sink for nitrogen is ________ in the atmosphere.

Accepted Answer

The answer of The primary sink for nitrogen is ________...

Clear-cutting of forests:

About 20 percent of the energy passing from one trophic level to the next is lost.

About 50% of photosynthesis activity takes place in fresh water.

Polyploidy is an evolutionary mechanism that may result in

What is the term used to describe food chains which overlap and intersect?

Which of the following best matches the description? -Competition between members of the same species.

Ecologists have traditionally categorized the roles of organisms in ecosystems into three broad categories that include

Which of the following best matches the description? -Competition between members of different species.

What kind of plant has nitrogen-fixing bacteria living in their roots?

Indian pipe,a flowering plant,lacks chlorophyll and is not able to do photosynthesis.It obtains food as:

Why are nutrients carried into aquatic ecosystems?

This concept states that no two species can occupy the same ecological niche in the same place and the same time.

Natural selection is the process that determines

Everything that affects an organism during its lifetime is known as ecology.

The development of herbicide resistance in populations of weeds over several generations is an example of

________ are a major carbon sink.

Which of the following best matches the description? -Bacteria that convert nitrogen compounds in the soil into nitrogen gas.

If a species becomes isolated from another for a long time as a result of a barrier,speciation will not occur.

Which of the following best matches the description? -Bacteria that convert atmospheric nitrogen gas into forms of nitrogen that plants can use.

The primary sink for nitrogen is ________ in the atmosphere.

Environmental Interrelationships

Environmental Ethics

Risk,economics,and Environmental Concerns

Interrelated Scientific Principles

Kinds of Ecosystems and Communities

Populations: Characteristics and Issues

Energy and Civilization: Patterns of Consumption

Nonrenewable Energy Sources

Renewable Energy Sources

Biodiversity

Land-Use

Soil

Agricultural Methods

Water

Air Quality Issues

Climate Change: a 21st Century Issue

Solid Waste Management and Disposal

Environmental Regulations: Hazardous Substances and Wastes

Environmental Policy

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Exam 5: Interactions: Environments and Organisms

Clear-cutting of forests:

About 20 percent of the energy passing from one trophic level to the next is lost.

About 50% of photosynthesis activity takes place in fresh water.

Polyploidy is an evolutionary mechanism that may result in

What is the term used to describe food chains which overlap and intersect?

Which of the following best matches the description? -Competition between members of the same species.

Ecologists have traditionally categorized the roles of organisms in ecosystems into three broad categories that include

Which of the following best matches the description? -Competition between members of different species.

What kind of plant has nitrogen-fixing bacteria living in their roots?

Indian pipe,a flowering plant,lacks chlorophyll and is not able to do photosynthesis.It obtains food as:

Why are nutrients carried into aquatic ecosystems?

This concept states that no two species can occupy the same ecological niche in the same place and the same time.

Natural selection is the process that determines

Everything that affects an organism during its lifetime is known as ecology.

The development of herbicide resistance in populations of weeds over several generations is an example of

________ are a major carbon sink.

Which of the following best matches the description? -Bacteria that convert nitrogen compounds in the soil into nitrogen gas.

If a species becomes isolated from another for a long time as a result of a barrier,speciation will not occur.

Which of the following best matches the description? -Bacteria that convert atmospheric nitrogen gas into forms of nitrogen that plants can use.

The primary sink for nitrogen is ________ in the atmosphere.

Environmental Interrelationships

Environmental Ethics

Risk,economics,and Environmental Concerns

Interrelated Scientific Principles

Kinds of Ecosystems and Communities

Populations: Characteristics and Issues

Energy and Civilization: Patterns of Consumption

Nonrenewable Energy Sources

Renewable Energy Sources

Biodiversity

Land-Use

Soil

Agricultural Methods

Water

Air Quality Issues

Climate Change: a 21st Century Issue

Solid Waste Management and Disposal

Environmental Regulations: Hazardous Substances and Wastes

Environmental Policy

Filters