Question 1

Respiration involves

Accepted Answer

A)  the use of heat energy to react carbon dioxide with water to produce water and oxygen.
B)  a chemical reaction between oxygen and carbohydrates that produces heat,carbon dioxide,and water.
C)  the use of light energy to react carbon dioxide with water to produce carbohydrates and oxygen.
D)  the use of light energy to react carbon dioxide with oxygen to produce water and oxygen.
E)  a chemical reaction between carbon dioxide and carbohydrates that produces light and water.F) A) and E)
G) C) and D)

Question 2

Lake turnover occurs during the summer.

Accepted Answer

A) True 
 B)False

Question 3

In spite of improvements in pollution control,there is still a need for concern over the health of the Great Lakes ecosystem because of biological magnification.

Accepted Answer

A) True 
 B)False

Question 4

Primary productivity refers to ________ and is greatest in ________.

Accepted Answer

A)  the number of herbivores per acre of land tropical savannas
B)  the number of carnivores per acre of land tropical savannas
C)  the number of herbivores per acre of land tropical rain forests
D)  the rate at which plant growth occurs tropical rain forests
E)  the rate at which plant growth occurs midlatitude deciduous forestsF) B) and C)
G) C) and D)

Question 5

Draw a diagram of a food web and label producers,consumers,and decomposers.

Accepted Answer

Sure, I can help with that. A food web i...

Question 6

Fire can actually be beneficial to an ecosystem.

Accepted Answer

A) True 
 B)False

Question 7

Give an equation for respiration and explain its importance.

Accepted Answer

The equation for respiration is:

C6H12O...

Question 8

A similar progression of plant-community life zones occurs with increased altitude and latitude.

Accepted Answer

A) True 
 B)False

Question 9

Researchers have determined that weak (secondary)interactions in complex food webs are of little or no importance for the health of an ecosystem.

Accepted Answer

A) True 
 B)False

Question 10

Energy flows through an ecosystem along a circuit called the

Accepted Answer

A)  food web.
B)  niche order.
C)  trophic place.
D)  food chain.
E)  habitat.F) None of the above
G) D) and E)

Question 11

Most ecosystems are relatively uniform,with few,if any,patches of former landscapes.

Accepted Answer

A) True 
 B)False

Question 12

Near the subtropical high pressure centers,net primary productivity is generally limited by

Accepted Answer

A)  sunlight.
B)  lack of rainfall.
C)  cold temperatures.
D)  soil depth.
E)  altitude.F) A) and D)
G) A) and C)

Question 13

As climate change progresses,species distributions

Accepted Answer

A)  in the northern hemisphere,will shift northward and to higher elevations pressuring existing species and leading to extinctions.
B)  will contract as plants and animals will have to adapt to new climatic conditions.
C)  will stay the same because climate does not determine their locations.
D)  in the northern hemisphere will shift southward as species adjust to the warmer climate.
E)  will face decreased competition as the warmer temperatures mean greater resource availability for plants and animals.F) C) and D)
G) A) and B)

Question 14

What is biogeography? What subjects do biogeographers study?

Accepted Answer

Biogeography is the scientific study of ...

Question 15

Presently,the Antarctic food chain is being threatened by overexploitation and UV light.

Accepted Answer

A) True 
 B)False

Question 16

Which of the following expresses the correct relationship?

Accepted Answer

A)  chloroplasts are chlorophyll.
B)  chlorophyll is in chloroplasts
C)  stomata control guard cells.
D)  chloroplasts control evaporation.
E)  organelles are in veins.F) A) and B)
G) C) and D)

Question 17

Which of the following would be true if 100 people could be fed from the grain produced on an acre of land?

Accepted Answer

A)  90 people could be fed if the grain were first fed to the cows-which were then fed to the people.
B)  75 people could be fed if the grain were first fed to the cows-which were then fed to the people.
C)  50 people could be fed if the grain were first fed to the cows-which were then fed to the people.
D)  10 people could be fed if the grain were first fed to the cows-which were then fed to the people.
E)  There is no difference in the number of people that could be fed under each condition.F) None of the above
G) C) and D)

Question 18

What are important aspects of Humboldt's life-zone concept?

Accepted Answer

Humboldt's life-zone concept is an impor...

Question 19

Why do pollutants tend to concentrate at the higher ends of food chains?

Accepted Answer

Pollutants tend to concentrate at the hi...

Question 20

The study of the spatial aspects of ecology and the distribution of plants and animals is called

Accepted Answer

A)  biology.
B)  ecology.
C)  geoarchaeology.
D)  biogeography.
E)  geobiologyF) C) and E)
G) A) and D)

Exam 19: Ecosystem Essentials

Draw a diagram of a food web and label producers,consumers,and decomposers.

Correct AnswerAnswered by ExamLex AISure, I can help with that. A food web i...View AnswerShow Answer

Which of the following would be true if 100 people could be fed from the grain produced on an acre of land?

Correct AnswerverifiedShow Answer

Which of the following expresses the correct relationship?

Correct AnswerverifiedShow Answer

Researchers have determined that weak (secondary)interactions in complex food webs are of little or no importance for the health of an ecosystem.

Correct AnswerverifiedShow Answer

Energy flows through an ecosystem along a circuit called the

Correct AnswerverifiedShow Answer

Lake turnover occurs during the summer.

Correct AnswerverifiedShow Answer

Fire can actually be beneficial to an ecosystem.

Correct AnswerverifiedShow Answer

As climate change progresses,species distributions

Correct AnswerverifiedShow Answer

Most ecosystems are relatively uniform,with few,if any,patches of former landscapes.

Correct AnswerverifiedShow Answer

The study of the spatial aspects of ecology and the distribution of plants and animals is called

Correct AnswerverifiedShow Answer

A similar progression of plant-community life zones occurs with increased altitude and latitude.

Correct AnswerverifiedShow Answer

Primary productivity refers to ________ and is greatest in ________.

Correct AnswerverifiedShow Answer

Respiration involves

Correct AnswerverifiedShow Answer

What are important aspects of Humboldt's life-zone concept?

Correct AnswerAnswered by ExamLex AIHumboldt's life-zone concept is an impor...View AnswerShow Answer

Give an equation for respiration and explain its importance.

Correct AnswerAnswered by ExamLex AIThe equation for respiration is:C6H12O...View AnswerShow Answer

In spite of improvements in pollution control,there is still a need for concern over the health of the Great Lakes ecosystem because of biological magnification.

Correct AnswerverifiedShow Answer

Why do pollutants tend to concentrate at the higher ends of food chains?

Correct AnswerAnswered by ExamLex AIPollutants tend to concentrate at the hi...View AnswerShow Answer

Presently,the Antarctic food chain is being threatened by overexploitation and UV light.

Correct AnswerverifiedShow Answer

Near the subtropical high pressure centers,net primary productivity is generally limited by

Correct AnswerverifiedShow Answer

What is biogeography? What subjects do biogeographers study?

Correct AnswerAnswered by ExamLex AIBiogeography is the scientific study of ...View AnswerShow Answer

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Sure, I can help with that. A food web i...
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Primary productivity refers to and is greatest in .

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Humboldt's life-zone concept is an impor...
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The equation for respiration is:

C6H12O...
View Answer

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verified

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Answered by ExamLex AI
Pollutants tend to concentrate at the hi...
View Answer

Correct Answer
verified

Correct Answer
verified

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Answered by ExamLex AI
Biogeography is the scientific study of ...
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