Question 1

Which best describes Earth's biosphere?

Accepted Answer

A) It consists of only terrestrial organisms,while the hydrosphere includes aquatic and marine organisms. 
B) It only includes the biotic components of an ecosystem,with the abiotic components being considered part of the lithosphere,hydrosphere,or atmosphere,respectively. 
C) It is more a theoretical construct than an observable sphere of study. 
D) It extends from the ocean floor to an altitude of approximately 8 km into the atmosphere. 
A) It consists of only terrestrial organisms,while the hydrosphere includes aquatic and marine organisms. 
B) It only includes the biotic components of an ecosystem,with the abiotic components being considered part of the lithosphere,hydrosphere,or atmosphere,respectively. 
C) It is more a theoretical construct than an observable sphere of study. 
D) It extends from the ocean floor to an altitude of approximately 8 km into the atmosphere. D

Question 2

Which is the difference between the photosynthetic production of carbohydrates and the respiration loss of carbohydrates?

Accepted Answer

A) Net primary productivity. 
B) Compensation point. 
C) Net photosynthesis. 
D) Free air CO2 enrichment. 
A) Net primary productivity. 
B) Compensation point. 
C) Net photosynthesis. 
D) Free air CO2 enrichment. C

Question 3

How is biodiversity in an ecosystem related to long-term stability and productivity?

Accepted Answer

A) If biodiversity is greater,then long-term stability and productivity is greater. 
B) If biodiversity is greater,then long-term stability and productivity is less. 
C) If biodiversity is less,then long-term stability and productivity is greater. 
D) If biodiversity is less,then long-term stability and productivity is slightly more. 
A) If biodiversity is greater,then long-term stability and productivity is greater. 
B) If biodiversity is greater,then long-term stability and productivity is less. 
C) If biodiversity is less,then long-term stability and productivity is greater. 
D) If biodiversity is less,then long-term stability and productivity is slightly more. A

Question 4

A leech that sucks blood from an animal is in an example of commensalism.

Accepted Answer

A) True 
 B)False

Question 5

What are the major threats to biodiversity in the coming decades? Explain your selections.

Accepted Answer

Answers will vary but may incl

Question 6

An ecological niche is essentially the same thing as a habitat.

Accepted Answer

A) True 
 B)False

Question 7

Why does rapid climate change pose a potential threat to organisms?

Accepted Answer

A) Plants may be unable to re-colonize an area fast enough to survive. 
B) Habitat expansion will occur for plants. 
C) Habitat expansion will occur for animals that depend on plant ecosystems that are more dispersed. 
D) Temperature limiting factors may cause some ecosystems and communities to be strengthened. 
A) Plants may be unable to re-colonize an area fast enough to survive. 
B) Habitat expansion will occur for plants. 
C) Habitat expansion will occur for animals that depend on plant ecosystems that are more dispersed. 
D) Temperature limiting factors may cause some ecosystems and communities to be strengthened.

Question 8

Using outside sources,provide an example of each of the following symbiotic relationships: mutualism,parasitism,commensalism,and amensalism.

Accepted Answer

Answers will vary: Mutualism should be a

Question 9

Most of Earth's organisms have been identified and classified.

Accepted Answer

A) True 
 B)False

Question 10

Provide a hypothetical or a historical example of both primary and secondary succession.

Accepted Answer

Answers will vary.An example of primary

Question 11

Different patches across a landscape may be at different successional stages.

Accepted Answer

A) True 
 B)False

Question 12

Which are the interacting populations of living plants and animals in a particular location?

Accepted Answer

A) Metapopulation. 
B) Ecosystem. 
C) Community. 
D) Niche. 
A) Metapopulation. 
B) Ecosystem. 
C) Community. 
D) Niche.

Question 13

Only about which percentage of the kilocalories in a trophic level is passed to the next trophic level (e.g.from autotroph to primary consumer)?

Accepted Answer

A) 5%. 
B) 10%. 
C) 15%. 
D) 20%. 
A) 5%. 
B) 10%. 
C) 15%. 
D) 20%.

Question 14

Within a lake,eutrophic conditions predominate in deep,open water.

Accepted Answer

A) True 
 B)False

Question 15

On average,algal beds and reefs have higher net primary productivity than tropical rain forests.

Accepted Answer

A) True 
 B)False

Question 16

When a community is disturbed to the point that most or all of the species in it are eliminated,a process occurs in which the area undergoes a series of changes in species composition as newer communities replace older ones.Which is this process?

Accepted Answer

A) Rejuvenation. 
B) Mass extinction. 
C) Ecological succession. 
D) Patch dynamics. 
A) Rejuvenation. 
B) Mass extinction. 
C) Ecological succession. 
D) Patch dynamics.

Question 17

A lake classified as oligotrophic has high nutrient content.

Accepted Answer

A) True 
 B)False

Question 18

Increased foliage cover in parts of Australia has been attributed to which of the following climate change related phenomena?

Accepted Answer

A) Sea level rise. 
B) Cloud albedo forcing. 
C) CO2 fertilization effect. 
D) Cloud greenhouse forcing. 
A) Sea level rise. 
B) Cloud albedo forcing. 
C) CO2 fertilization effect. 
D) Cloud greenhouse forcing.

Question 19

Which of the following is the largest carbon sink?

Accepted Answer

A) The atmosphere. 
B) Fossil fuels and oil shales. 
C) Dead organic matter. 
D) The oceans. 
A) The atmosphere. 
B) Fossil fuels and oil shales. 
C) Dead organic matter. 
D) The oceans.

Question 20

An orogeny that separates a once continuous population of a species is an example of vicariance.

Accepted Answer

A) True 
 B)False

Which best describes Earth's biosphere?

Which is the difference between the photosynthetic production of carbohydrates and the respiration loss of carbohydrates?

How is biodiversity in an ecosystem related to long-term stability and productivity?

A leech that sucks blood from an animal is in an example of commensalism.

What are the major threats to biodiversity in the coming decades? Explain your selections.

An ecological niche is essentially the same thing as a habitat.

Why does rapid climate change pose a potential threat to organisms?

Using outside sources,provide an example of each of the following symbiotic relationships: mutualism,parasitism,commensalism,and amensalism.

Most of Earth's organisms have been identified and classified.

Provide a hypothetical or a historical example of both primary and secondary succession.

Different patches across a landscape may be at different successional stages.

Which are the interacting populations of living plants and animals in a particular location?

Only about which percentage of the kilocalories in a trophic level is passed to the next trophic level (e.g.from autotroph to primary consumer)?

Within a lake,eutrophic conditions predominate in deep,open water.

On average,algal beds and reefs have higher net primary productivity than tropical rain forests.

When a community is disturbed to the point that most or all of the species in it are eliminated,a process occurs in which the area undergoes a series of changes in species composition as newer communities replace older ones.Which is this process?

A lake classified as oligotrophic has high nutrient content.

Increased foliage cover in parts of Australia has been attributed to which of the following climate change related phenomena?

Which of the following is the largest carbon sink?

An orogeny that separates a once continuous population of a species is an example of vicariance.

Essentials of Geography

Solar Energy to Earth and the Seasons

Earths Modern Atmosphere

Atmosphere and Surface Energy Balances

Global Temperatures

Atmospheric and Oceanic Circulations

Water and Atmospheric Moisture

Weather

Water Resources

Global Climate Systems

Climate Change

The Dynamic Planet

Tectonics, earthquakes, and Volcanism

Weathering, karst Landscapes, and Mass Movement

River Systems

Oceans, coastal Processes, and Wind Processes

Glacial and Periglacial Landscapes

The Geography of Soils

Terrestrial Biomes

Filters

Exam 19: Ecosystem Essentials

Which best describes Earth's biosphere?

Which is the difference between the photosynthetic production of carbohydrates and the respiration loss of carbohydrates?

How is biodiversity in an ecosystem related to long-term stability and productivity?

A leech that sucks blood from an animal is in an example of commensalism.

What are the major threats to biodiversity in the coming decades? Explain your selections.

An ecological niche is essentially the same thing as a habitat.

Why does rapid climate change pose a potential threat to organisms?

Using outside sources,provide an example of each of the following symbiotic relationships: mutualism,parasitism,commensalism,and amensalism.

Most of Earth's organisms have been identified and classified.

Provide a hypothetical or a historical example of both primary and secondary succession.

Different patches across a landscape may be at different successional stages.

Which are the interacting populations of living plants and animals in a particular location?

Only about which percentage of the kilocalories in a trophic level is passed to the next trophic level (e.g.from autotroph to primary consumer)?

Within a lake,eutrophic conditions predominate in deep,open water.

On average,algal beds and reefs have higher net primary productivity than tropical rain forests.

When a community is disturbed to the point that most or all of the species in it are eliminated,a process occurs in which the area undergoes a series of changes in species composition as newer communities replace older ones.Which is this process?

A lake classified as oligotrophic has high nutrient content.

Increased foliage cover in parts of Australia has been attributed to which of the following climate change related phenomena?

Which of the following is the largest carbon sink?

An orogeny that separates a once continuous population of a species is an example of vicariance.

Essentials of Geography

Solar Energy to Earth and the Seasons

Earths Modern Atmosphere

Atmosphere and Surface Energy Balances

Global Temperatures

Atmospheric and Oceanic Circulations

Water and Atmospheric Moisture

Weather

Water Resources

Global Climate Systems

Climate Change

The Dynamic Planet

Tectonics, earthquakes, and Volcanism

Weathering, karst Landscapes, and Mass Movement

River Systems

Oceans, coastal Processes, and Wind Processes

Glacial and Periglacial Landscapes

The Geography of Soils

Terrestrial Biomes

Filters