Question 1

Diagram an ecological pyramid that consists of four trophic levels.Indicate the category of organisms at each level and provide an example of an organism for each category.

Accepted Answer

The 1st trophic level of an ecological p...

Question 2

What is the advantage of constructing an ecological pyramid based on biomass?

Accepted Answer

A)  Aquatic ecosystem pyramids actually look like pyramids.
B)  Size of the various organisms is eliminated as a factor.
C)  This includes the detrital food web as well as the grazing food web in one pyramid.
D)  This takes into account nutrient cycling as well as energy flow.
E)  This eliminates the need to include producers in the pyramid.F) A) and B)
G) B) and E)

Question 3

List and explain the six steps in the hydrological cycle.

Accepted Answer

1.Evaporation occurs as the sun causes f...

Question 4

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 5

To say that something is a producer is to give information regarding its niche in an ecosystem.

Accepted Answer

A) True 
 B)False  True

Question 6

What is the reservoir for the water cycle?

Accepted Answer

A)  ocean
B)  lakes and rivers
C)  rainfall
D)  aquifers
E)  atmosphereF) B) and E)
G) None of the above

Question 7

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 C)
G) A) and E)

Question 8

The global climate has already warmed about 0.6 degrees Celsius since the Industrial Revolution.

Accepted Answer

A) True 
 B)False  True

Question 9

What organism would be at the second level in a detrital food chain?

Accepted Answer

A)  leaves
B)  detritus
C)  birds
D)  earthworms
E)  shrewsF) A) and B)
G) A) and C)

Question 10

Most ecosystems contain quaternary consumers.

Accepted Answer

A) True 
 B)False

Question 11

Do all ecological pyramids have a broad base with a smaller top?

Accepted Answer

No,because in some instances,such as aq...

Question 12

Which of the following is a legume involved in housing nitrogen-fixing bacteria?

Accepted Answer

A)  ferns
B)  oak trees
C)  grass
D)  beans
E)  rosesF) A) and C)
G) B) and C)

Question 13

The atmosphere would be considered what component of a chemical cycle?

Accepted Answer

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

Question 14

When energy flows from one trophic level to another only a small amount is actually used.Which of the following uses of energy by an organism allows for the least amount of transfer to a different trophic level?

Accepted Answer

A)  cellular respiration
B)  growth
C)  death
D)  excretion
E)  reproductionF) A) and C)
G) All of the above

Question 15

The ratio between the uptake of carbon dioxide by photosynthesis and the release of carbon dioxide by respiration is approximately

Accepted Answer

A)  one (i.e. ,about the same) .
B)  2 (i.e. ,twice as much carbon dioxide is taken up by photosynthesis as is released by respiration) .
C)  5 (i.e. ,five times as much carbon dioxide is taken up by photosynthesis as is released by respiration) .
D)  0.5 (i.e. ,half as much carbon dioxide is taken up by photosynthesis as is released by respiration) .
E)  0.1 (i.E. ,one tenth as much carbon dioxide is taken up by photosynthesis as is released by respiration) .F) D) and E)
G) B) and E)

Question 16

What is the exchange pool for the carbon cycle?

Accepted Answer

A)  the ocean
B)  carbon dioxide in the atmosphere
C)  plants
D)  algae
E)  soilF) A) and E)
G) A) and D)

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) C) and D)

Question 18

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) A) and D)
G) All of the above C

Question 19

What is the primary source of carbon for aquatic algae?

Accepted Answer

A)  calcium carbonate
B)  calcium chloride
C)  bicarbonate
D)  carbon dioxide
E)  carbon monoxideF) C) and D)
G) A) and E)

Question 20

Which of the following biogeochemical cycles is a sedimentary cycle?

Accepted Answer

A)  carbon
B)  nitrogen
C)  phosphorus
D)  water
E)  iceF) A) and B)
G) All of the above

Exam 24: Global Ecology and Human Interferences

Diagram an ecological pyramid that consists of four trophic levels.Indicate the category of organisms at each level and provide an example of an organism for each category.

Correct AnswerverifiedThe 1st trophic level of an ecological p...View AnswerShow Answer

What is the advantage of constructing an ecological pyramid based on biomass?

Correct AnswerverifiedShow Answer

List and explain the six steps in the hydrological cycle.

Correct Answerverified1.Evaporation occurs as the sun causes f...View AnswerShow Answer

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

Correct AnswerverifiedShow Answer

To say that something is a producer is to give information regarding its niche in an ecosystem.

Correct AnswerverifiedTrue

What is the reservoir for the water cycle?

Correct AnswerverifiedShow Answer

Which of the following defines an ecosystem?

Correct AnswerverifiedShow Answer

The global climate has already warmed about 0.6 degrees Celsius since the Industrial Revolution.

Correct AnswerverifiedTrue

What organism would be at the second level in a detrital food chain?

Correct AnswerverifiedShow Answer

Most ecosystems contain quaternary consumers.

Correct AnswerverifiedShow Answer

Do all ecological pyramids have a broad base with a smaller top?

Correct Answerverified No,because in some instances,such as aq...View AnswerShow Answer

Which of the following is a legume involved in housing nitrogen-fixing bacteria?

Correct AnswerverifiedShow Answer

The atmosphere would be considered what component of a chemical cycle?

Correct AnswerverifiedShow Answer

When energy flows from one trophic level to another only a small amount is actually used.Which of the following uses of energy by an organism allows for the least amount of transfer to a different trophic level?

Correct AnswerverifiedShow Answer

The ratio between the uptake of carbon dioxide by photosynthesis and the release of carbon dioxide by respiration is approximately

Correct AnswerverifiedShow Answer

What is the exchange pool for the carbon cycle?

Correct AnswerverifiedShow Answer

What kind of an organism is an earthworm?

Correct AnswerverifiedShow Answer

How does phosphate enter the soil?

Correct AnswerverifiedC

What is the primary source of carbon for aquatic algae?

Correct AnswerverifiedShow Answer

Which of the following biogeochemical cycles is a sedimentary cycle?

Correct AnswerverifiedShow Answer

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The 1st trophic level of an ecological p...
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1.Evaporation occurs as the sun causes f...
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True

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True

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No,because in some instances,such as aq...
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C

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