Question 1

In food webs,toxic chemicals tend to accumulate and concentrate most in which level?

Accepted Answer

A)  Top carnivores.
B)  Herbivores.
C)  Omnivores.
D)  Autotrophs.E) None of the above
F) A) and C)

Question 2

A study of the spatial distribution of the coast redwood (Sequoia sempervirens) and the environmental factors that control that distribution would be an example of a topic studied in which of the following?

Accepted Answer

A)  Biogeography.
B)  Ecology.
C)  Pedology.
D)  Plant biology.E) A) and B)
F) C) and D)

Question 3

Which of the following is an abiotic component of an ecosystem?

Accepted Answer

A)  Plants.
B)  Animals.
C)  Bacteria.
D)  Mineral nutrients.E) None of the above
F) A) and D)

Question 4

If a lava flow completely denudes a mountain,leaving only bare rock,what type of succession will follow?

Accepted Answer

A)  Primary.
B)  Secondary.
C)  Tertiary.
D)  Quaternary.E) B) and C)
F) A) and D)

Question 5

Continental drift separating a once continuous population is an example of which process?

Accepted Answer

A)  Lamarckian evolution.
B)  Punctuated equilibrium.
C)  Mutation.
D)  Vicariance.E) All of the above
F) A) and B)

Question 6

Approximately what percentage of plant and animal species has been classified overall?

Accepted Answer

A)  1%.
B)  13%.
C)  67%.
D)  92%.E) A) and B)
F) B) and C)

Question 7

Which of the following is a biotic component of an ecosystem?

Accepted Answer

A)  Plants.
B)  Sunlight.
C)  Precipitation.
D)  Mineral nutrients.E) None of the above
F) A) and B)

Question 8

In coral reefs,clownfish live unharmed among the poisonous tentacles of sea anemones.The sea anemones protect the clownfish from predation,while the clownfish scare off predators,such as butterfly fish,which would otherwise eat the anemones.The clownfish may also provide important nutrients to the anemones.This is an example of which symbiotic relationship?

Accepted Answer

A)  Parasitism.
B)  Mutualism.
C)  Commensalism.
D)  Amensalism.E) All of the above
F) B) and C)

Question 9

Which is involved in photosynthesis?

Accepted Answer

A)  The release of stored carbon dioxide in a process using sunlight.
B)  The union of carbon dioxide and hydrogen in the presence of sunlight,and the release of oxygen.
C)  A process known as respiration.
D)  Important reactions within the stems and roots of plants.E) None of the above
F) A) and C)

Question 10

Mistletoe (Phoradendron) infest many taxa of plants,often causing the branches of the host species to become swollen and distorted and making the trees more susceptible to insect infestations.This is an example of which symbiotic relationship?

Accepted Answer

A)  Parasitism.
B)  Mutualism.
C)  Commensalism.
D)  Amensalism.E) A) and B)
F) None of the above

Question 11

In which of the following areas would one tend to find the highest net primary productivity?

Accepted Answer

A)  Northern Brazil.
B)  Central Australia.
C)  Western Canada.
D)  Eurasia.E) A) and B)
F) B) and C)

Question 12

Which embodies the origin of Earth's biological diversity?

Accepted Answer

A)  The life zone concept.
B)  The theory of evolution.
C)  Ecological succession principle.
D)  Competitive exclusion principle.E) A) and D)
F) B) and C)

Question 13

Using outside forces,describe the limiting factor of an organism and how it affects this organisms distribution.

Accepted Answer

Answers will vary,but may focu...

Question 14

Which refers to the biotic and abiotic characteristics in the environment that determine species distribution?

Accepted Answer

A)  Limiting factor.
B)  Range of tolerance.
C)  Ecological niche.
D)  Habitat.E) C) and D)
F) B) and C)

Question 15

Altitudinal community assemblages at a constant latitude are often similar to latitudinal community assemblages at a constant elevation.

Accepted Answer

A) True 
 B)False

Question 16

Lichen,which is a composite organism consisting of an alga and fungus,is an example of mutualism.

Accepted Answer

A) True 
 B)False

Question 17

Primary succession is more common than secondary succession.

Accepted Answer

A) True 
 B)False

Question 18

As energy moves through trophic levels it increases from lower to higher levels.

Accepted Answer

A) True 
 B)False

Question 19

Species extinctions have occurred throughout Earth's history,so the recent loss of species is likely something of little concern.

Accepted Answer

A) True 
 B)False

Question 20

Of the total energy intercepted at the surface of Earth and available for work,only about how much is actually fixed by photosynthesis?

Accepted Answer

A)  1%.
B)  5%.
C)  10%.
D)  15%.E) B) and C)
F) All of the above

Exam 19: Ecosystem Essentials

Using outside forces,describe the limiting factor of an organism and how it affects this organisms distribution.

Correct Answer
verified
Answers will vary,but may focu...
View Answer

Of the total energy intercepted at the surface of Earth and available for work,only about how much is actually fixed by photosynthesis?

Correct Answer
verified

Correct Answer
verified

Which embodies the origin of Earth's biological diversity?

Correct Answer
verified

Which of the following is an abiotic component of an ecosystem?

Correct Answer
verified

In which of the following areas would one tend to find the highest net primary productivity?

Correct Answer
verified

Primary succession is more common than secondary succession.

Correct Answer
verified

Species extinctions have occurred throughout Earth's history,so the recent loss of species is likely something of little concern.

Correct Answer
verified

A study of the spatial distribution of the coast redwood (Sequoia sempervirens) and the environmental factors that control that distribution would be an example of a topic studied in which of the following?

Correct Answer
verified

Which of the following is a biotic component of an ecosystem?

Correct Answer
verified

As energy moves through trophic levels it increases from lower to higher levels.

Correct Answer
verified

In food webs,toxic chemicals tend to accumulate and concentrate most in which level?

Correct Answer
verified

Lichen,which is a composite organism consisting of an alga and fungus,is an example of mutualism.

Correct Answer
verified

Mistletoe (Phoradendron) infest many taxa of plants,often causing the branches of the host species to become swollen and distorted and making the trees more susceptible to insect infestations.This is an example of which symbiotic relationship?

Correct Answer
verified

Approximately what percentage of plant and animal species has been classified overall?

Correct Answer
verified

Continental drift separating a once continuous population is an example of which process?

Correct Answer
verified

If a lava flow completely denudes a mountain,leaving only bare rock,what type of succession will follow?

Correct Answer
verified

Which is involved in photosynthesis?

Correct Answer
verified

Altitudinal community assemblages at a constant latitude are often similar to latitudinal community assemblages at a constant elevation.

Correct Answer
verified

Which refers to the biotic and abiotic characteristics in the environment that determine species distribution?

Correct Answer
verified

Exam 19: Ecosystem Essentials

Using outside forces,describe the limiting factor of an organism and how it affects this organisms distribution.

Correct AnswerverifiedAnswers will vary,but may focu...View AnswerShow Answer

Of the total energy intercepted at the surface of Earth and available for work,only about how much is actually fixed by photosynthesis?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Which embodies the origin of Earth's biological diversity?

Correct AnswerverifiedShow Answer

Which of the following is an abiotic component of an ecosystem?

Correct AnswerverifiedShow Answer

In which of the following areas would one tend to find the highest net primary productivity?

Correct AnswerverifiedShow Answer

Primary succession is more common than secondary succession.

Correct AnswerverifiedShow Answer

Species extinctions have occurred throughout Earth's history,so the recent loss of species is likely something of little concern.

Correct AnswerverifiedShow Answer

A study of the spatial distribution of the coast redwood (Sequoia sempervirens) and the environmental factors that control that distribution would be an example of a topic studied in which of the following?

Correct AnswerverifiedShow Answer

Which of the following is a biotic component of an ecosystem?

Correct AnswerverifiedShow Answer

As energy moves through trophic levels it increases from lower to higher levels.

Correct AnswerverifiedShow Answer

In food webs,toxic chemicals tend to accumulate and concentrate most in which level?

Correct AnswerverifiedShow Answer

Lichen,which is a composite organism consisting of an alga and fungus,is an example of mutualism.

Correct AnswerverifiedShow Answer

Mistletoe (Phoradendron) infest many taxa of plants,often causing the branches of the host species to become swollen and distorted and making the trees more susceptible to insect infestations.This is an example of which symbiotic relationship?

Correct AnswerverifiedShow Answer

Approximately what percentage of plant and animal species has been classified overall?

Correct AnswerverifiedShow Answer

Continental drift separating a once continuous population is an example of which process?

Correct AnswerverifiedShow Answer

If a lava flow completely denudes a mountain,leaving only bare rock,what type of succession will follow?

Correct AnswerverifiedShow Answer

Which is involved in photosynthesis?

Correct AnswerverifiedShow Answer

Altitudinal community assemblages at a constant latitude are often similar to latitudinal community assemblages at a constant elevation.

Correct AnswerverifiedShow Answer

Which refers to the biotic and abiotic characteristics in the environment that determine species distribution?

Correct AnswerverifiedShow Answer

Correct Answer
verified
Answers will vary,but may focu...
View Answer

Correct Answer
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Correct Answer
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Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
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Correct Answer
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Correct Answer
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