Question 1

Phosphorus is the only major nutrient whose cycle is _____.

Accepted Answer

The answer of Phosphorus is the only major nutrient whose...

Question 2

Which of the following would utilize the highest percentage of net primary productivity?

Accepted Answer

A)  producers 
B)  decomposers 
C)  herbivores 
D)  predators 
A)  producers 
B)  decomposers 
C)  herbivores 
D)  predators

Question 3

The figure below shows the net primary productivity (NPP) in terrestrial and marine biomes around the world.  
The pattern of NPP in marine ecosystems as shown above suggests that

Accepted Answer

A)  marine productivity is as sensitive to temperature as terrestrial productivity. 
B)  without shade from overhead vegetation, marine productivity typically exceeds that found in terrestrial ecosystems. 
C)  marine ecosystems are also limited by sunlight, with the highest productivity at the equator. 
D)  most marine productivity results from the input of terrestrially derived nutrients. 
A)  marine productivity is as sensitive to temperature as terrestrial productivity. 
B)  without shade from overhead vegetation, marine productivity typically exceeds that found in terrestrial ecosystems. 
C)  marine ecosystems are also limited by sunlight, with the highest productivity at the equator. 
D)  most marine productivity results from the input of terrestrially derived nutrients.

Question 4

Cougars defend a relatively large territory; consider the following facts and estimate how much area a cougar would require: A cougar requires 490 kg annually and obtains most of its food from deer, which average 55 kg. In typical deer habitat the NPP is 35 kg per acre. One deer consumes approximately 1,150 kg of vegetation each year.

Accepted Answer

A)  300 acres 
B)  1,925 acres 
C)  3,000 acres 
D)  4,500 acres 
A)  300 acres 
B)  1,925 acres 
C)  3,000 acres 
D)  4,500 acres

Question 5

A spacecraft crash lands on an airless, lifeless moon. All that survives, along with the crew, are some chickens, corn flakes, and vitamins. The air and water recyclers are functioning. To maximize their food supply until rescued the crew should

Accepted Answer

A)  feed the corn flakes and vitamins to the chickens, then eat the eggs until rescued. 
B)  kill all the chickens immediately, eat them first, then eat the corn flakes. 
C)  mark each week's survival by eating one chicken 
D)  ration the chickens first, when they are all eaten shift to the corn flakes 
A)  feed the corn flakes and vitamins to the chickens, then eat the eggs until rescued. 
B)  kill all the chickens immediately, eat them first, then eat the corn flakes. 
C)  mark each week's survival by eating one chicken 
D)  ration the chickens first, when they are all eaten shift to the corn flakes

Question 6

Net primary productivity in a terrarium could be estimated by

Accepted Answer

A)  carefully controlling the amount of light entering it. 
B)  counting the change in the number of plant species in it. 
C)  weighing the terrarium at regular intervals. 
D)  removing the primary consumers and weighing them at regular intervals. 
A)  carefully controlling the amount of light entering it. 
B)  counting the change in the number of plant species in it. 
C)  weighing the terrarium at regular intervals. 
D)  removing the primary consumers and weighing them at regular intervals.

Question 7

In marine ecosystems the highest concentrations of persistent organic pollutants (POPs) will be found

Accepted Answer

A)  in the bottom sediments where the remains of dead organisms eventually accumulate. 
B)  in the bodies of tertiary and quaternary consumers which represent the transfer of the energy and nutrients from the lower trophic levels. 
C)  in the water since POPs are recycled by decomposers just like any other nutrient. 
D)  in marine producers because they form the base of marine food webs and are the most numerous type of organisms. 
A)  in the bottom sediments where the remains of dead organisms eventually accumulate. 
B)  in the bodies of tertiary and quaternary consumers which represent the transfer of the energy and nutrients from the lower trophic levels. 
C)  in the water since POPs are recycled by decomposers just like any other nutrient. 
D)  in marine producers because they form the base of marine food webs and are the most numerous type of organisms.

Question 8

Sedimentary nutrients

Accepted Answer

A)  cycle very slowly and can often become limiting. 
B)  are easily replaced if lost from an ecosystem by erosion of the local rock. 
C)  are distributed from locally abundant reservoirs through atmospheric circulation. 
D)  include carbon, oxygen, nitrogen, and sulfur. 
A)  cycle very slowly and can often become limiting. 
B)  are easily replaced if lost from an ecosystem by erosion of the local rock. 
C)  are distributed from locally abundant reservoirs through atmospheric circulation. 
D)  include carbon, oxygen, nitrogen, and sulfur.

Exam 37: Ecosystems

Phosphorus is the only major nutrient whose cycle is _____.

Which of the following would utilize the highest percentage of net primary productivity?

The figure below shows the net primary productivity (NPP) in terrestrial and marine biomes around the world. The pattern of NPP in marine ecosystems as shown above suggests that

A spacecraft crash lands on an airless, lifeless moon. All that survives, along with the crew, are some chickens, corn flakes, and vitamins. The air and water recyclers are functioning. To maximize their food supply until rescued the crew should

Net primary productivity in a terrarium could be estimated by

In marine ecosystems the highest concentrations of persistent organic pollutants (POPs) will be found

Sedimentary nutrients

The Nature of Science and the Characteristics of Life

Organizing the Diversity of Life

Major Groups of Living Organisms

Chemical Building Blocks

Cell Structure and Internal Compartments

Cell Membranes, Transport, and Communication

Energy and Enzymes

Photosynthesis and Cellular Respiration

Cell Division

Patterns of Inheritance

Chromosomes and Human Genetics

DNA

From Gene to Protein

Control of Gene Expression

DNA Technology

How Evolution Works

Evolution of Populations

Adaptation and Speciation

The Evolutionary History of Life

Maintaining the Internal Environment

Animal Nutrition and Digestion

Gas Exchange

The Circulatory System

Animal Hormones

The Nervous System

Sensing the Environment

Skeletons, Muscles, and Movement

Defenses against Disease

Reproduction and Development

Animal Behavior

Plant Structure, Nutrition, and Transport

Plant Growth and Reproduction

The Biosphere

Growth of Populations

Interactions among Organisms

Communities of Organisms

Global Change

Biodiversity and People

Cancer: Cell Division Out of Control

Harnessing the Human Genome

Humans and Evolution

Smoking--Beyond Lung Cancer

Feeding a Hungry Planet

Building a Sustainable Society

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