Question 1

Decomposers perform a valuable service because they recycle nutrients.

Accepted Answer

A) True 
 B)False

Question 2

What do autotrophs require in order to produce food for themselves and all the heterotrophs?

Accepted Answer

A)   sunlight, inorganic nutrients
B)   sunlight, organic nutrients
C)   an energy source, water
D)   an energy source, inorganic nutrients
E)   heat, waterF) A) and C)
G) A) and E)

Question 3

How does phosphate enter the soil?

Accepted Answer

A)   conversion in the atmosphere due to lightning
B)   precipitation from clouds
C)   weathering of rocks
D)   photosynthesis
E)   cellular respirationF) C) and E)
G) B) and E)

Question 4

Are humans capable of upsetting global biogeochemical cycles with their activities?

Accepted Answer

A) True 
 B)False

Question 5

Assuming all of the following organisms are part of the same food web,which of the following would be an example of a secondary consumer?

Accepted Answer

A)   leaves
B)   caterpillars
C)   sparrows
D)   hawks
E)   eaglesF) A) and C)
G) A) and E)

Question 6

The bottom of the ocean floor is not considered part of the biosphere because no sunlight reaches it.

Accepted Answer

A) True 
 B)False  False

Question 7

Which is the following functions of an herbivore provides energy that becomes available to the carnivore that eats the herbivore?

Accepted Answer

A)   excretion
B)   defecation
C)   growth and reproduction
D)   cellular respiration
E)   deathF) B) and D)
G) A) and D) C

Question 8

What does the word "trophic" mean?

Accepted Answer

A)   energy
B)   niche
C)   web
D)   feeding
E)   biomassF) A) and C)
G) B) and E)

Question 9

What is the name of the frigid ecosystem bordering the North Pole?

Accepted Answer

A)   coniferous forests
B)   prairies
C)   temperate forests
D)   taiga
E)   tundraF) A) and D)
G) C) and D)

Question 10

Which of the following is not an effect of global warming?

Accepted Answer

A)   rise in sea level
B)   expansion of forests in the temperate zones
C)   melting of glaciers
D)   wetter coastal regions
E)   flooding of coastal agricultural landF) C) and D)
G) C) and E)

Question 11

There is more nitrogen gas in the atmosphere than there is oxygen.

Accepted Answer

A) True 
 B)False

Question 12

A biogeochemical cycle involves only the abiotic components of an ecosystem,and describes how chemicals circulate through those components.

Accepted Answer

A) True 
 B)False

Question 13

Biological magnification occurs as organisms get larger due to increased water,air,and soil pollution.

Accepted Answer

A) True 
 B)False

Question 14

Phosphorus is needed by living organisms because it is a part of proteins.

Accepted Answer

A) True 
 B)False

Question 15

Which is at the beginning of a grazing food web?

Accepted Answer

A)   detritus
B)   earthworms
C)   beetles
D)   shrews
E)   leavesF) A) and C)
G) A) and E) E

Question 16

Which of the following defines an ecosystem?

Accepted Answer

A)   a group of organisms of the same species interacting together
B)   all of the living organisms in an area interacting together
C)   all living organisms and the nonliving environment interacting together
D)   aspects of the nonliving environment interacting together
E)   all the places on Earth where living organisms can be foundF) A) and D)
G) A) and E)

Question 17

What kind of an organism is an earthworm?

Accepted Answer

A)   producer
B)   herbivore
C)   carnivore
D)   omnivore
E)   detritus feederF) A) and B)
G) A) and C)

Question 18

Minerals in rocks are considered what type of component of a chemical cycle?

Accepted Answer

A)   reservoir
B)   exchange pool
C)   biotic community
D)   abiotic community
E)   none of theseF) A) and E)
G) C) and D)

Question 19

Which is an exchange pool for the carbon cycle?

Accepted Answer

A)   the ocean
B)   carbon dioxide in the atmosphere
C)   limestone
D)   fossil fuels
E)   soilF) A) and C)
G) B) and E)

Question 20

Cultural eutrophication can be caused by

Accepted Answer

A)   respiration and transpiration.
B)   mercury from industrial sources.
C)   bacteria and viruses from sewage and barnyard waste.
D)   detergents, fertilizers, and sewage treatment plants.
E)   biological magnification.F) A) and E)
G) D) and E)

Exam 24: Ecology and the Nature of Ecosystems

Decomposers perform a valuable service because they recycle nutrients.

Correct AnswerverifiedShow Answer

What do autotrophs require in order to produce food for themselves and all the heterotrophs?

Correct AnswerverifiedShow Answer

How does phosphate enter the soil?

Correct AnswerverifiedShow Answer

Are humans capable of upsetting global biogeochemical cycles with their activities?

Correct AnswerverifiedShow Answer

Assuming all of the following organisms are part of the same food web,which of the following would be an example of a secondary consumer?

Correct AnswerverifiedShow Answer

The bottom of the ocean floor is not considered part of the biosphere because no sunlight reaches it.

Correct AnswerverifiedFalse

Which is the following functions of an herbivore provides energy that becomes available to the carnivore that eats the herbivore?

Correct AnswerverifiedC

What does the word "trophic" mean?

Correct AnswerverifiedShow Answer

What is the name of the frigid ecosystem bordering the North Pole?

Correct AnswerverifiedShow Answer

Which of the following is not an effect of global warming?

Correct AnswerverifiedShow Answer

There is more nitrogen gas in the atmosphere than there is oxygen.

Correct AnswerverifiedShow Answer

A biogeochemical cycle involves only the abiotic components of an ecosystem,and describes how chemicals circulate through those components.

Correct AnswerverifiedShow Answer

Biological magnification occurs as organisms get larger due to increased water,air,and soil pollution.

Correct AnswerverifiedShow Answer

Phosphorus is needed by living organisms because it is a part of proteins.

Correct AnswerverifiedShow Answer

Which is at the beginning of a grazing food web?

Correct AnswerverifiedE

Which of the following defines an ecosystem?

Correct AnswerverifiedShow Answer

What kind of an organism is an earthworm?

Correct AnswerverifiedShow Answer

Minerals in rocks are considered what type of component of a chemical cycle?

Correct AnswerverifiedShow Answer

Which is an exchange pool for the carbon cycle?

Correct AnswerverifiedShow Answer

Cultural eutrophication can be caused by

Correct AnswerverifiedShow Answer

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False

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C

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E

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