Question 1

The study of energy and its transformations is called:

Accepted Answer

A) biogeochemical cycles 
B) kinetic energy 
C) potential energy 
D) thermodynamics 
A) biogeochemical cycles 
B) kinetic energy 
C) potential energy 
D) thermodynamics

Question 2

What is the step in the nitrogen cycle in which gaseous nitrogen is converted into ammonia?

Accepted Answer

A) ossification 
B) ammonification 
C) assimilation 
D) nitrogen fixation 
A) ossification 
B) ammonification 
C) assimilation 
D) nitrogen fixation

Question 3

Herbivores are:

Accepted Answer

A) primary consumers 
B) secondary consumers 
C) decomposers 
D) scavengers 
A) primary consumers 
B) secondary consumers 
C) decomposers 
D) scavengers

Question 4

Nitrogen gas accounts for what percentage of the atmosphere?

Accepted Answer

A) 0.03% 
B) 1% 
C) approximately 50% 
D) 78% 
A) 0.03% 
B) 1% 
C) approximately 50% 
D) 78%

Question 5

Define competition. Compare and contrast intraspecific competition and interspecific competition.

Accepted Answer

Competition occurs when two or more indi

Question 6

What important role do decomposers play in the ecosystem?

Accepted Answer

A) predation 
B) pollination 
C) nutrient cycling 
D) photosynthesis 
A) predation 
B) pollination 
C) nutrient cycling 
D) photosynthesis

Question 7

Which of the following is an example of a biotic component of an ecosystem?

Accepted Answer

A) the climate 
B) a community 
C) water 
D) synthetic pesticides 
A) the climate 
B) a community 
C) water 
D) synthetic pesticides

Question 8

In order for a parasite to be successful, it must

Accepted Answer

A) live outside its host's body 
B) live inside its host's body 
C) do no harm to the host organism 
D) keep its host alive 
A) live outside its host's body 
B) live inside its host's body 
C) do no harm to the host organism 
D) keep its host alive

Question 9

The nitrogen cycle is one of the most important and complex of the biogeochemical cycles. Why is nitrogen important?

Accepted Answer

A) It's an Ozone depleting gas. 
B) It's an essential part of biological molecules such as proteins and nucleic acids (DN
A)  
C) It's the most toxic element to living organisms 
D) Nitrogen dilutes the oxygen in the atmosphere causing respiratory problems 
A) It's an Ozone depleting gas. 
B) It's an essential part of biological molecules such as proteins and nucleic acids (DN
A)  
C) It's the most toxic element to living organisms 
D) Nitrogen dilutes the oxygen in the atmosphere causing respiratory problems

Question 10

How would an ecologist classify both the animals shown below?

Accepted Answer

A) decomposers 
B) primary consumers 
C) producers 
D) carnivores 
A) decomposers 
B) primary consumers 
C) producers 
D) carnivores

Question 11

Which statement BEST portrays the American robin in the food web below?

Accepted Answer

A) Consumers that eat herbivores and can be considered primary consumers 
B) Secondary consumers that eat primary consumers and can be considered herbivores 
C) Both primary and secondary consumers and can be considered omnivores 
D) Tertiary consumers and are also called heterotrophs 
A) Consumers that eat herbivores and can be considered primary consumers 
B) Secondary consumers that eat primary consumers and can be considered herbivores 
C) Both primary and secondary consumers and can be considered omnivores 
D) Tertiary consumers and are also called heterotrophs

Question 12

Which of the following statements is TRUE?

Accepted Answer

A) Predation only favors the predator with the evolution of more efficient ways to catch prey. 
B) Predation only favors the prey with the evolution of more efficient ways to escape predators. 
C) Predation exerts a selective force on the prey, favoring characteristics that reduce the probability of capture. 
D) Predation exerts a selective force on the predator, favoring characteristics that reduce the probability of prey capture. 
A) Predation only favors the predator with the evolution of more efficient ways to catch prey. 
B) Predation only favors the prey with the evolution of more efficient ways to escape predators. 
C) Predation exerts a selective force on the prey, favoring characteristics that reduce the probability of capture. 
D) Predation exerts a selective force on the predator, favoring characteristics that reduce the probability of prey capture.

Question 13

A realized niche is the totality of an organism's adaptations, its use of resource, and the lifestyle to which it is fitted.

Accepted Answer

A) True 
 B)False

Question 14

Which of the following series is organized in successive steps according to the levels of organization used by ecologists?

Accepted Answer

A) population -> ecosystem -> community 
B) species -> community -> biosphere 
C) species -> ecosystem -> population 
D) population -> community -> ecosystem 
A) population -> ecosystem -> community 
B) species -> community -> biosphere 
C) species -> ecosystem -> population 
D) population -> community -> ecosystem

Question 15

What is the process that reduces nitrate (NO3-)to gaseous nitrogen (N2)called?

Accepted Answer

A) nitrification. 
B) ammonification. 
C) assimilation. 
D) denitrification. 
A) nitrification. 
B) ammonification. 
C) assimilation. 
D) denitrification.

Question 16

Photosynthesis is:

Accepted Answer

A) A physical law, which states that when energy is converted from one form to another, some of it is degraded into heat, a less usable form that disperses into the environment. 
B) The biological process that captures light energy and transforms it into the chemical energy of organic molecules, which are manufactured from carbon dioxide and water. 
C) The measure of the amount of usable energy available to do work in the universe. 
D) The process that involves potential energy being converted to kinetic energy. 
A) A physical law, which states that when energy is converted from one form to another, some of it is degraded into heat, a less usable form that disperses into the environment. 
B) The biological process that captures light energy and transforms it into the chemical energy of organic molecules, which are manufactured from carbon dioxide and water. 
C) The measure of the amount of usable energy available to do work in the universe. 
D) The process that involves potential energy being converted to kinetic energy.

Question 17

What layer of our planet that is made of rock and soil?

Accepted Answer

A) hydrosphere 
B) ecosphere 
C) biosphere 
D) lithosphere 
A) hydrosphere 
B) ecosphere 
C) biosphere 
D) lithosphere

Question 18

Which of the following statements about biogeochemical cycles is true?

Accepted Answer

A) They only include processes conducted by or within living organisms. 
B) They pertain only to the abiotic environment. 
C) They describe the movement of water and other materials through an ecosystem. 
D) They only pertain to exchanges and interactions that occur within the atmosphere. 
A) They only include processes conducted by or within living organisms. 
B) They pertain only to the abiotic environment. 
C) They describe the movement of water and other materials through an ecosystem. 
D) They only pertain to exchanges and interactions that occur within the atmosphere.

Question 19

Some research suggest that ______ may weaken the global hydrological cycle by causing clouds to form that release less precipitation.

Accepted Answer

The answer of Some research suggest that ______ may weaken...

Question 20

The layers of the biosphere are the atmosphere, hydrosphere, and ___________.

Accepted Answer

The answer of The layers of the biosphere are the...

The study of energy and its transformations is called:

What is the step in the nitrogen cycle in which gaseous nitrogen is converted into ammonia?

Herbivores are:

Nitrogen gas accounts for what percentage of the atmosphere?

Define competition. Compare and contrast intraspecific competition and interspecific competition.

What important role do decomposers play in the ecosystem?

Which of the following is an example of a biotic component of an ecosystem?

In order for a parasite to be successful, it must

The nitrogen cycle is one of the most important and complex of the biogeochemical cycles. Why is nitrogen important?

How would an ecologist classify both the animals shown below?

Which statement BEST portrays the American robin in the food web below?

Which of the following statements is TRUE?

A realized niche is the totality of an organism's adaptations, its use of resource, and the lifestyle to which it is fitted.

Which of the following series is organized in successive steps according to the levels of organization used by ecologists?

What is the process that reduces nitrate (NO₃^-)to gaseous nitrogen (N₂)called?

Photosynthesis is:

What layer of our planet that is made of rock and soil?

Which of the following statements about biogeochemical cycles is true?

Some research suggest that ______ may weaken the global hydrological cycle by causing clouds to form that release less precipitation.

The layers of the biosphere are the atmosphere, hydrosphere, and ___________.

The Environmental Challenges We Face

Sustainability and Human Values

Environmental History, Politics, and Economics

Risk Analysis and Environmental Health Hazards

Ecosystems and Evolution

Human Population Change and the Environment

Air and Air Pollution

Global Atmospheric Changes

Freshwater Resources and Water Pollution

The Ocean and Fisheries

Mineral and Soil Resources

Land Resources

Agriculture and Food Resources

Biodiversity and Conservation

Solid and Hazardous Waste

Nonrenewable Energy Resources

Renewable Energy Resources

Filters

Exam 5: How Ecosystems Work

The study of energy and its transformations is called:

What is the step in the nitrogen cycle in which gaseous nitrogen is converted into ammonia?

Herbivores are:

Nitrogen gas accounts for what percentage of the atmosphere?

Define competition. Compare and contrast intraspecific competition and interspecific competition.

What important role do decomposers play in the ecosystem?

Which of the following is an example of a biotic component of an ecosystem?

In order for a parasite to be successful, it must

The nitrogen cycle is one of the most important and complex of the biogeochemical cycles. Why is nitrogen important?

How would an ecologist classify both the animals shown below?

Which statement BEST portrays the American robin in the food web below?

Which of the following statements is TRUE?

A realized niche is the totality of an organism's adaptations, its use of resource, and the lifestyle to which it is fitted.

Which of the following series is organized in successive steps according to the levels of organization used by ecologists?

What is the process that reduces nitrate (NO3-)to gaseous nitrogen (N2)called?

Photosynthesis is:

What layer of our planet that is made of rock and soil?

Which of the following statements about biogeochemical cycles is true?

Some research suggest that ______ may weaken the global hydrological cycle by causing clouds to form that release less precipitation.

The layers of the biosphere are the atmosphere, hydrosphere, and ___________.

The Environmental Challenges We Face

Sustainability and Human Values

Environmental History, Politics, and Economics

Risk Analysis and Environmental Health Hazards

Ecosystems and Evolution

Human Population Change and the Environment

Air and Air Pollution

Global Atmospheric Changes

Freshwater Resources and Water Pollution

The Ocean and Fisheries

Mineral and Soil Resources

Land Resources

Agriculture and Food Resources

Biodiversity and Conservation

Solid and Hazardous Waste

Nonrenewable Energy Resources

Renewable Energy Resources

Filters

What is the process that reduces nitrate (NO₃^-)to gaseous nitrogen (N₂)called?