Question 1

Which of the following make up the largest reservoir of carbon?

Accepted Answer

A)  rocks
B)  producers
C)  consumers
D)  nutrients in soilE) C) and D)
F) A) and B)

Question 2

Match the term that corresponds to the appropriate lettered box in the image. 
-tertiary consumers

Accepted Answer

The answer of Match the term that corresponds to the...

Question 3

Which of the following is among the disadvantages of a simulation model of an ecosystem?

Accepted Answer

A)  It does not take into account water availability.
B)  It does not take into account nutrient availability.
C)  It does not take into account interactions between organisms.
D)  It may not be accurate.E) B) and C)
F) None of the above

Question 4

What do we often follow when studying ecosystems?

Accepted Answer

A)  the movement of energy from one level to another
B)  the movement of chaicals from one level to another
C)  the movement of organisms from one area to another
D)  the movement of predators from one area to anotherE) None of the above
F) All of the above

Question 5

What helps to put the nature of ecosystems in context?

Accepted Answer

A)  variations in the scale of connections
B)  variations in the scale of interactions
C)  stability in the scale of connections
D)  stability in the scale of interactionsE) B) and C)
F) A) and B)

Question 6

What was demonstrated by the Hubbard Brook Watershed experiment?

Accepted Answer

A)  that deforestation decreases flooding and the fertility of ecosystems
B)  that deforestation increases flooding and decreases the fertility of ecosystems
C)  that deforestation increases flooding and the fertility of ecosystems
D)  that deforestation decreases flooding and increases the fertility of ecosystemsE) A) and B)
F) A) and C)

Question 7

Match each description with the appropriate scientific term.
-element in short supply

Accepted Answer

A)  biogeochemical cycles
B)  ecological efficiency
C)  ecological pyramid
D)  generalized compartment model
E)  gross primary productivityF) limiting nutrientG) net primary productivityH) pyramid of biomassI) secondary productivityJ) simulation modellingK) standing crop biomassL) trophic cascadeM) E) and K)
N) F) and K)

Question 8

Match each description with the appropriate scientific term.
-rate at which a plant converts the Sun's energy into chemical energy

Accepted Answer

A)  biogeochemical cycles
B)  ecological efficiency
C)  ecological pyramid
D)  generalized compartment model
E)  gross primary productivityF) limiting nutrientG) net primary productivityH) pyramid of biomassI) secondary productivityJ) simulation modellingK) standing crop biomassL) trophic cascadeM) F) and K)
N) B) and C)

Question 9

Energy losses are multiplied in successive energy transfers in a food web.

Accepted Answer

A) True 
 B)False

Question 10

What is the definition of the standing crop biomass?

Accepted Answer

A)  number of plant species present
B)  dry weight of the plants
C)  amount of sunlight absorbed by the plants
D)  productivity of the plantsE) A) and B)
F) A) and D)

Question 11

Which of the following would help reduce the amount of greenhouse gases in the atmosphere?

Accepted Answer

A)  reducing water usage
B)  driving to work
C)  using electrical heat in homes
D)  reducing emissions from factoriesE) B) and D)
F) A) and B)

Question 12

In this chapter, what steps have we learned to help the environment?

Accepted Answer

We have learned that we should work hard...

Question 13

Compare the length of day with the intensity of sunlight near the equator. How do they differ?

Accepted Answer

A)  Sunlight is most intense and day length is most variable.
B)  Sunlight is most intense and day length is least variable.
C)  Sunlight is least intense and day length is most variable.
D)  Sunlight is least intense and day length is least variable.E) C) and D)
F) A) and C)

Question 14

How many energy transfers away from the Sun are herbivores?

Accepted Answer

A)  four
B)  three
C)  two
D)  oneE) All of the above
F) A) and D)

Question 15

What is the main natural source of phosphorus?

Accepted Answer

A)  Earth's crust
B)  fertilizer
C)  guano
D)  legumesE) C) and D)
F) B) and D)

Question 16

Match each description with the appropriate scientific term.
-energy transfer from producers to consumers

Accepted Answer

A)  biogeochemical cycles
B)  ecological efficiency
C)  ecological pyramid
D)  generalized compartment model
E)  gross primary productivityF) limiting nutrientG) net primary productivityH) pyramid of biomassI) secondary productivityJ) simulation modellingK) standing crop biomassL) trophic cascadeM) H) and L)
N) A) and D)

Question 17

Which ecosystem would have the lowest percentage of total net primary productivity?

Accepted Answer

A)  open ocean
B)  tundra
C)  swamp and march
D)  savannaE) C) and D)
F) A) and D)

Question 18

How would you calculate the net primary productivity of an ecosystem?

Accepted Answer

You would subtract the energy ...

Question 19

Which of the following plants CANNOT participate in nitrogen fixation?

Accepted Answer

A)  peanuts
B)  clover
C)  wheat
D)  rosesE) A) and B)
F) A) and C)

Question 20

What is the difference between biomes and ecozones?

Accepted Answer

A)  Biomes are characteristic of specific climatic and topographic situations, while ecozones are generally reflected by their dominant biotas.
B)  Ecozones are characteristic of specific climatic and topographic situations, while biomes are generally reflected by their dominant biotas.
C)  Biomes are larger than ecozones.
D)  Biomes are the same as ecozones.E) B) and C)
F) All of the above

Exam 31: Ecosystems

Compare the length of day with the intensity of sunlight near the equator. How do they differ?

Correct AnswerverifiedShow Answer

Which of the following is among the disadvantages of a simulation model of an ecosystem?

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How many energy transfers away from the Sun are herbivores?

Correct AnswerverifiedShow Answer

What is the definition of the standing crop biomass?

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Which of the following make up the largest reservoir of carbon?

Correct AnswerverifiedShow Answer

Match the term that corresponds to the appropriate lettered box in the image. -tertiary consumers

Correct AnswerverifiedShow Answer

Energy losses are multiplied in successive energy transfers in a food web.

Correct AnswerverifiedShow Answer

What helps to put the nature of ecosystems in context?

Correct AnswerverifiedShow Answer

What is the difference between biomes and ecozones?

Correct AnswerverifiedShow Answer

What do we often follow when studying ecosystems?

Correct AnswerverifiedShow Answer

Which of the following would help reduce the amount of greenhouse gases in the atmosphere?

Correct AnswerverifiedShow Answer

Match each description with the appropriate scientific term. -energy transfer from producers to consumers

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Which of the following plants CANNOT participate in nitrogen fixation?

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How would you calculate the net primary productivity of an ecosystem?

Correct AnswerverifiedYou would subtract the energy ...View AnswerShow Answer

What was demonstrated by the Hubbard Brook Watershed experiment?

Correct AnswerverifiedShow Answer

Match each description with the appropriate scientific term. -element in short supply

Correct AnswerverifiedShow Answer

In this chapter, what steps have we learned to help the environment?

Correct AnswerverifiedWe have learned that we should work hard...View AnswerShow Answer

Match each description with the appropriate scientific term. -rate at which a plant converts the Sun's energy into chemical energy

Correct AnswerverifiedShow Answer

Which ecosystem would have the lowest percentage of total net primary productivity?

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What is the main natural source of phosphorus?

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You would subtract the energy ...
View Answer

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We have learned that we should work hard...
View Answer

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