Question 1

What is involved in the process of denitrification?

Accepted Answer

A)  conversion of nitrogen gas to ammonium 
B)  conversion of nitrogen gas to nitrate 
C)  conversion of ammonium to nitrate 
D)  conversion of nitrite to nitrate 
E)  conversion of nitrate to nitrogen gas

Question 2

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

Accepted Answer

The answer of Are humans capable of upsetting global biogeochemical...

Question 3

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)  reproduction

Question 4

Which of the following is not an abiotic component of an ecosystem?

Accepted Answer

A)  decomposers 
B)  soil type 
C)  amount of rainfall 
D)  temperature 
E)  amount of sunlight

Question 5

A detrital food web and a grazing food web are separate because each starts at a different level.

Accepted Answer

A) True 
 B)False

Question 6

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 monoxide

Question 7

Which is the following functions of a 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)  death

Question 8

All of the energy in an ecosystem eventually becomes

Accepted Answer

A)  sunlight. 
B)  feces. 
C)  heat. 
D)  detritus. 
E)  body mass.

Question 9

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)  roses

Question 10

Decomposers perform a valuable service because they recycle nutrients.

Accepted Answer

A) True 
 B)False

Question 11

There are no reservoirs of carbon for the carbon cycle.

Accepted Answer

A) True 
 B)False

Question 12

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)  soil

Question 13

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.

Question 14

What is the loss of water from plants called?

Accepted Answer

A)  runoff 
B)  precipitation 
C)  evaporation 
D)  transpiration 
E)  transference

Question 15

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

Accepted Answer

A) True 
 B)False

Question 16

List and explain the six steps in the hydrological cycle.

Accepted Answer

The answer of List and explain the six steps in...

Question 17

What is another name for the taiga?

Accepted Answer

A)  savanna 
B)  tropical rain forest 
C)  prairie 
D)  coniferous forest 
E)  tundra

Question 18

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 land

Question 19

What does the word "trophic" mean?

Accepted Answer

A)  energy 
B)  niche 
C)  web 
D)  feeding 
E)  biomass

Question 20

What is another name for autotrophs?

Accepted Answer

A)  herbivores 
B)  carnivores 
C)  omnivores 
D)  producers 
E)  detritus feeders

Exam 23: Global Ecology and Human Interferences

What is involved in the process of denitrification?

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

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?

Which of the following is not an abiotic component of an ecosystem?

A detrital food web and a grazing food web are separate because each starts at a different level.

What is the primary source of carbon for aquatic algae?

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

All of the energy in an ecosystem eventually becomes

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

Decomposers perform a valuable service because they recycle nutrients.

There are no reservoirs of carbon for the carbon cycle.

What is the exchange pool for the carbon cycle?

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

What is the loss of water from plants called?

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

List and explain the six steps in the hydrological cycle.

What is another name for the taiga?

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

What does the word "trophic" mean?

What is another name for autotrophs?