Environmental Science, 10th Edition (Cunningham)

Chapter 10: Pest Control

Practice Quizzing

1
A variety of pesticides are used and they differ from each other in
A)the type of organism killed.
B)the degree of toxicity.
C)the degree of persistence in the environment.
D)all of the above.
2
Chemicals were first used to kill or ward off pests
A)thousands of years ago.
B)since the beginning of modern chemistry several hundred years ago.
C)about 70 years ago.
D)during World War II.
3
Diseases which can be significantly reduced in frequency with pesticides include
A)malaria.
B)river blindness.
C)yellow fever.
D)all of the above.
4
The percentage of U.S. crops lost to pests since pesticide use became common is ____________ than before pesticides.
A)much lower
B)somewhat lower
C)unchanged
D)greater
5
Chlorinated hydrocarbons are characterized by all of the following EXCEPT which one? They
A)disrupt nervous system function.
B)are fast acting.
C)accumulate in fat tissue.
D)degrade quickly in the environment.
6
Pesticide resistance
A)has emerged in a few species but more cases are expected.
B)used to be a problem but modern pesticides are typically not susceptible to this problem.
C)has arisen in hundreds of species.
D)has arisen only among insects.
7
Integrated pest management utilizes
A)zero pesticide applications.
B)a more expensive but equally effective alternative to pesticides.
C)an ecologically-based approach to pest management.
D)all of the above methods.
8
Over ____________ pest species have so far evolved resistance to pesticides.
A)1500
B)300
C)100
D)50
9
Herbicides are pesticides that kill plants.
A)TRUE
B)FALSE
10
A substantial portion of pesticides used do not reach their intended target pests.
A)TRUE
B)FALSE
11
Problems with memory and reading comprehension are documented for children whose mothers ate pesticide-contaminated fish while pregnant.
A)TRUE
B)FALSE
12
Crop rotation can be an effective alternative to pesticides to control pests.
A)TRUE
B)FALSE
13
Relying on natural predators to control pests is but one of many nonpesticide options farmers can use in an approach known as biological control.
A)TRUE
B)FALSE
14
Insects tend to be our most frequent pests because
A)They make up at least 3/4 of all species on earth
B)They are resistant to DDT
C)They require very specific biological niches
D)They tend to be generalists
E)1 and 4 are correct
15
Natural organic pesticides are
A)Extracted from plants
B)Can be toxic to insects
C)Can be toxic to humans
D)1 and 2 are correct.
E)All of the above.
16
Humans use pesticides
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)1 and 2 are correct
17
Persistant pollutants tend to accumulate in polar regions because
A)The are more stable at lower temperatures
B)There are no crops to absorb them there
C)The evaporate in warm areas and condense in cold areas
D)ionic effects move them toward the poles
18
Toxic chemicals tend to have a greater impact on children because they consume more food, water and breathe more air relative to their body weight.
A)TRUE
B)FALSE
19
Examples of ways that pesticide use can be reduced include
A)Monoculture
B)Crop Rotation
C)biological control
D)All of the above
E)2 and 3 are correct
20
Which of the following statements is false?
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% of the farmland in America
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