Question 1

Water vapor contributes to global warming.

Accepted Answer

A) True 
 B)False

Question 2

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

Accepted Answer

A) True 
 B)False

Question 3

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

Accepted Answer

A)  1 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). The transfer rates of these two is about even. 
A)  1 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). The transfer rates of these two is about even.

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

What is another name for the taiga?

Accepted Answer

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

Question 6

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 these 
A)  reservoir 
B)  exchange pool 
C)  biotic community 
D)  abiotic community 
E)  none of these

Question 7

When a rabbit eats a bean plant, a portion of the available energy moves into the rabbit's body. When the rabbit is eaten by a hawk, a portion of the available energy moves into the hawk's body. Indicate the various areas that energy is used by an organism, and why only 10% of the rabbit's available energy will move to the hawk.

Accepted Answer

When an organism consumes energy, only 1

Question 8

Most ecosystems contain quaternary consumers.

Accepted Answer

A) True 
 B)False

Question 9

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)  eagles 
A)  leaves 
B)  caterpillars 
C)  sparrows 
D)  hawks 
E)  eagles

Question 10

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

Question 11

Which of the following biogeochemical cycles is a sedimentary cycle?

Accepted Answer

A)  carbon 
B)  nitrogen 
C)  phosphorus 
D)  water 
E)  ice 
A)  carbon 
B)  nitrogen 
C)  phosphorus 
D)  water 
E)  ice

Question 12

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

Accepted Answer

A) True 
 B)False

Question 13

List and explain the six steps in the hydrological cycle.

Accepted Answer

1. Evaporation occurs as the sun causes

Question 14

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 
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 15

Which of the following is on the same trophic level as a rabbit?

Accepted Answer

A)  deer 
B)  snake 
C)  fox 
D)  hawk 
E)  bobcat 
A)  deer 
B)  snake 
C)  fox 
D)  hawk 
E)  bobcat

Question 16

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. 
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 17

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 
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 18

If the first-level carnivore consumes 500 kg of energy from herbivore tissue, how much is available to the second-level carnivores?

Accepted Answer

A)  500 kg 
B)  100 kg 
C)  50 kg 
D)  10 kg 
E)  5 kg 
A)  500 kg 
B)  100 kg 
C)  50 kg 
D)  10 kg 
E)  5 kg

Question 19

As a rule of thumb, how much of the food energy taken in by an herbivore is passed on to a carnivore primary consumer)?

Accepted Answer

A)  1% 
B)  5% 
C)  10% 
D)  50% 
E)  90% 
A)  1% 
B)  5% 
C)  10% 
D)  50% 
E)  90%

Question 20

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)  soil 
A)  the ocean 
B)  carbon dioxide in the atmosphere 
C)  limestone 
D)  fossil fuels 
E)  soil

Exam 24: Ecology and the Nature of Ecosystems

Water vapor contributes to global warming.

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

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

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

What is another name for the taiga?

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

Most ecosystems contain quaternary consumers.

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?

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

Which of the following biogeochemical cycles is a sedimentary cycle?

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

List and explain the six steps in the hydrological cycle.

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

Which of the following is on the same trophic level as a rabbit?

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

What is involved in the process of denitrification?

If the first-level carnivore consumes 500 kg of energy from herbivore tissue, how much is available to the second-level carnivores?

As a rule of thumb, how much of the food energy taken in by an herbivore is passed on to a carnivore primary consumer)?

Which is an exchange pool for the carbon cycle?

Human Organization

Chemistery of Life

Cell Structure and Function

Torganization and Regulation of Body Systems

Cardiovascular System : Heart and Blood Vessels

Cardiovascular System : Blood

The Lumphatic and Immune Systems

Biology of Infectious Diseases

Digestive System and Nutrition

Respiratory System

Urinary System

Skeletal System

Muscular System

Nervous System

Senses

Endocring System

Reproductive System

Development and Aging

Patterns of Chromosome Inheritance

Cancer

Patterns of Genetic Inheritance

Dna Piology and Technology

Hummen Evolution

Hummen Interactions With the Biosphere

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