Question 1

One of the drawbacks of leaving crop residues on a field after harvest is increased

Accepted Answer

A)  Cost due to the high cost of fertilizers 
B)  Pest and disease problems 
C)  Salinization 
D)  Energy use of machinery 
E)  Wind erosion 
A)  Cost due to the high cost of fertilizers 
B)  Pest and disease problems 
C)  Salinization 
D)  Energy use of machinery 
E)  Wind erosion

Question 2

When a new pesticide is developed the best thing to do is to use it

Accepted Answer

A)  Sparingly, so pests will not develop a resistance 
B)  Widely and liberally to knock out pests 
C)  Widely and liberally, so pests will not develop a resistance 
D)  Liberally then sparingly to prevent resistance and knock out pests 
E)  Sparingly then liberally to prevent resistance and knock out pests 
A)  Sparingly, so pests will not develop a resistance 
B)  Widely and liberally to knock out pests 
C)  Widely and liberally, so pests will not develop a resistance 
D)  Liberally then sparingly to prevent resistance and knock out pests 
E)  Sparingly then liberally to prevent resistance and knock out pests

Question 3

Organic pollutants called ________________ are showing up in many different places worldwide, far from their original source. This has led to a widespread movement to ________________.

Accepted Answer

A)  Persistent organic pollutants; ban twelve of them in developed countries 
B)  Mobile organic pollutants; ban twelve of them worldwide 
C)  Persistent organic pollutants; reduce the use of twelve of them 
D)  Mobile organic pollutants; reduce the use of twelve of them 
E)  Persistent organic pollutants; make them less persistent 
A)  Persistent organic pollutants; ban twelve of them in developed countries 
B)  Mobile organic pollutants; ban twelve of them worldwide 
C)  Persistent organic pollutants; reduce the use of twelve of them 
D)  Mobile organic pollutants; reduce the use of twelve of them 
E)  Persistent organic pollutants; make them less persistent

Question 4

Crop rotation can be an effective alternative to pesticides to control pests.

Accepted Answer

A) True 
 B)False

Question 5

The problem of soil erosion has been largely eliminated in the U.S.

Accepted Answer

A) True 
 B)False

Question 6

Chlorinated hydrocarbons are characterized by all of the following except

Accepted Answer

A)  they disrupt nervous system function. 
B)  they are fast acting. 
C)  they accumulate in fat tissue. 
D)  they degrade quickly in the environment. 
A)  they disrupt nervous system function. 
B)  they are fast acting. 
C)  they accumulate in fat tissue. 
D)  they degrade quickly in the environment.

Question 7

What is the correct order of the soil horizons from top down?

Accepted Answer

A)  O, E, A, B 
B)  A, E, O, B 
C)  O, A, E, B 
D)  A, B, E, O 
A)  O, E, A, B 
B)  A, E, O, B 
C)  O, A, E, B 
D)  A, B, E, O

Question 8

Humans use pesticides

Accepted Answer

A)  because, like other organisms, they are competing with other species for food and survival. 
B)  to maintain yields and protect crops from insect outbreaks. 
C)  to add nutrients to the soil, guaranteeing larger fruit. 
D)  because, like other organisms, they are competing with other species for food and survival and to maintain yields and protect crops from insect outbreaks. 
A)  because, like other organisms, they are competing with other species for food and survival. 
B)  to maintain yields and protect crops from insect outbreaks. 
C)  to add nutrients to the soil, guaranteeing larger fruit. 
D)  because, like other organisms, they are competing with other species for food and survival and to maintain yields and protect crops from insect outbreaks.

Question 9

Which of the following has been used historically to reduce agricultural pests?

Accepted Answer

A)  Planting insect repelling plant and flowers. 
B)  Salt 
C)  Lime 
D)  Sulfur ointments 
E)  All of these methods have been used as pest control 
A)  Planting insect repelling plant and flowers. 
B)  Salt 
C)  Lime 
D)  Sulfur ointments 
E)  All of these methods have been used as pest control

Question 10

Approximately ______ percent of the pesticides applied with machine sprayers never reach the intended target.

Accepted Answer

A)  15 
B)  20 
C)  75 
D)  50 
E)  90 
A)  15 
B)  20 
C)  75 
D)  50 
E)  90

Question 11

Why is it useful to classify pesticides by their chemical structure?

Accepted Answer

A)  It is easier to keep them organized by type 
B)  Scientists have done this for years and it would be inefficient to change it now 
C)  Similar chemical structures often relate to similar toxicological characteristics 
D)  This is how they are named and looking them up for reference is easier 
E)  This is how they are named and the regulations use these names 
A)  It is easier to keep them organized by type 
B)  Scientists have done this for years and it would be inefficient to change it now 
C)  Similar chemical structures often relate to similar toxicological characteristics 
D)  This is how they are named and looking them up for reference is easier 
E)  This is how they are named and the regulations use these names

Question 12

A broad-spectrum biocide is designed to kill

Accepted Answer

A)  A wide range of plants 
B)  Microbes that are neither plant nor animal 
C)  A wide range of living organisms 
D)  Specifically multicellular organisms 
E)  Specifically unicellular organisms 
A)  A wide range of plants 
B)  Microbes that are neither plant nor animal 
C)  A wide range of living organisms 
D)  Specifically multicellular organisms 
E)  Specifically unicellular organisms

Question 13

Which of the following statements is false?

Accepted Answer

A)  Organic agriculture depletes the soil of nutrients more rapidly than conventional agriculture, because there are no fertilizer applications to replenish the soil 
B)  Organic agriculture leads to healthier soils than conventional methods 
C)  Organic agriculture currently accounts for less than 1 percent of the farmland in America 
A)  Organic agriculture depletes the soil of nutrients more rapidly than conventional agriculture, because there are no fertilizer applications to replenish the soil 
B)  Organic agriculture leads to healthier soils than conventional methods 
C)  Organic agriculture currently accounts for less than 1 percent of the farmland in America

Question 14

When compared to sand and gravel, small soil particles (clay and silt) have ______ pore space.

Accepted Answer

A)  More 
B)  About the same 
C)  Less 
D)  Significantly more 
E)  It depends on the other minerals that are present 
A)  More 
B)  About the same 
C)  Less 
D)  Significantly more 
E)  It depends on the other minerals that are present

Question 15

In terms of agriculture, pesticides have led to _____ for consumers.

Accepted Answer

A)  Lower monetary costs 
B)  More attractive produce 
C)  Better produce quality 
D)  More availability of produce 
E)  All of these are correct 
A)  Lower monetary costs 
B)  More attractive produce 
C)  Better produce quality 
D)  More availability of produce 
E)  All of these are correct

Question 16

In developed countries, the most recent increases in agricultural productivity have come from

Accepted Answer

A)  Irrigation in arid areas 
B)  Increased fertilization 
C)  New crop varieties 
D)  An increase in the land being used for agriculture 
E)  Irrigation, increased fertilization, and new crop varieties 
A)  Irrigation in arid areas 
B)  Increased fertilization 
C)  New crop varieties 
D)  An increase in the land being used for agriculture 
E)  Irrigation, increased fertilization, and new crop varieties

Question 17

Inorganic pesticides are generally

Accepted Answer

A)  Highly toxic and remain in the soil for a long time 
B)  Highly toxic and break down soon in the environment 
C)  Moderately toxic and remain in the soil for a long time 
D)  Moderately toxic and break down soon in the environment 
E)  Toxic to insects but safe for humans 
A)  Highly toxic and remain in the soil for a long time 
B)  Highly toxic and break down soon in the environment 
C)  Moderately toxic and remain in the soil for a long time 
D)  Moderately toxic and break down soon in the environment 
E)  Toxic to insects but safe for humans

Question 18

Economic thresholds are not considered in integrated pest management.

Accepted Answer

A) True 
 B)False

Question 19

Pesticides used in food production are regulated in the U.S. entirely by the Food and Drug Administration.

Accepted Answer

A) True 
 B)False

Question 20

Over ____________ pest species have so far evolved resistance to pesticides.

Accepted Answer

A)  1500 
B)  300 
C)  100 
D)  50 
A)  1500 
B)  300 
C)  100 
D)  50

Exam 10: Farming: Conventional and Sustainable Practices

One of the drawbacks of leaving crop residues on a field after harvest is increased

When a new pesticide is developed the best thing to do is to use it

Organic pollutants called ________________ are showing up in many different places worldwide, far from their original source. This has led to a widespread movement to ________________.

Crop rotation can be an effective alternative to pesticides to control pests.

The problem of soil erosion has been largely eliminated in the U.S.

Chlorinated hydrocarbons are characterized by all of the following except

What is the correct order of the soil horizons from top down?

Humans use pesticides

Which of the following has been used historically to reduce agricultural pests?

Approximately ______ percent of the pesticides applied with machine sprayers never reach the intended target.

Why is it useful to classify pesticides by their chemical structure?

A broad-spectrum biocide is designed to kill

Which of the following statements is false?

When compared to sand and gravel, small soil particles (clay and silt) have ______ pore space.

In terms of agriculture, pesticides have led to _____ for consumers.

In developed countries, the most recent increases in agricultural productivity have come from

Inorganic pesticides are generally

Economic thresholds are not considered in integrated pest management.

Pesticides used in food production are regulated in the U.S. entirely by the Food and Drug Administration.

Over ____________ pest species have so far evolved resistance to pesticides.

Understanding Our Environment

Principles of Science and Systems

Matter, Energy, and Life

Evolution, Biological Communities, and Species Interactions

Biomes: Global Patterns of Life

Population Biology

Human Populations

Environmental Health and Toxicology

Food and Hunger

Biodiversity: Preserving Species

Biodiversity: Preserving Landscapes

Restoration Ecology

Geology and Earth Resources

Climate Change

Air Pollution

Water Use and Management

Water Pollution

Conventional Energy

Sustainable Energy

Solid, Toxic, and Hazardous Waste

Urbanization and Sustainable Cities

Ecological Economics

Environmental Policy, Law, and Planning

What Then Shall We Do

Filters

Organic pollutants called are showing up in many different places worldwide, far from their original source. This has led to a widespread movement to .