Question 1

Organisms at higher levels on food webs tend to have greater concentrations of bioaccumulated pesticide stored in their bodies through a process known as

Accepted Answer

A)  biological magnification
B)  persistent amplification
C)  genetic resistance
D)  genetic engineering
E)  bioaccumulation

Question 2

Subsistence agricultural practices are characterized by all of the following attributes except

Accepted Answer

A)  use of manure as fertilizer.
B)  use of draft animals for labor source.
C)  water and fossil fuel energy conservation.
D)  high crop yield per acre.
E)  limited use of agrochemicals. D

Question 3

The decline of Peregrine falcons in the United States due to the use of DDT is an example of?

Accepted Answer

A)  biological magnification
B)  bioaccumulation
C)  genetic resistance
D)  green revolution
E)  biological resistance

Question 4

Which of the following statements best describes the type of agricultural practice seen below?

Accepted Answer

A)  production of enough product for a single family's needs
B)  a land intensive form of subsidence agriculture in which livestock is supported by land too arid for successful crop growth
C)  harvesting a variety of plants on the same field simultaneously
D)  a type of subsistence agriculture that requires large inputs of energy from humans and draft animals
E)  a type of industrialized agriculture that requires large inputs of capital and fossil fuel energy inputs

Question 5

Which of the following uses of pesticide can lead to ecological imbalance?

Accepted Answer

A)  pesticides alter the genetic resistance in populations causing the pests to persist
B)  pesticides kill prey thereby causing predators to starve or migrate. Then the prey population rebounds larger than before since predators are gone.
C)  bioaccumulation of pesticides in animal tissue can lead to extinction of species.
D)  pesticides show mobility, moving other than where they were applied inadvertently killing non-pest organisms.
E)  All of the above

Question 6

Pesticides are effective in

Accepted Answer

A)  decreasing the cost of subsistence farming.
B)  increasing the crop damage due to competition with weeds.
C)  small concentrations but not in large concentrations.
D)  controlling some organisms that cause diseases in humans.
E)  attracting particular insects to an area.

Question 7

A health concern related to the ingestion of genetically modified foods is

Accepted Answer

A)  vitamin deficiency.
B)  food allergies.
C)  diabetes.
D)  germplasm disease.
E)  gene mutation.

Question 8

Industrialized agriculture in highly developed countries requires

Accepted Answer

A)  very little capital input because it relies on solar energy and precipitation.
B)  no inorganic fertilizers or pesticides.
C)  small inputs of energy from fossil fuels that produce very high crop yields.
D)  a large amount of land and large inputs of energy from humans and animals.
E)  large capital inputs, purchase seed, and less manual labor. E

Question 9

If pesticide from a farm runs off into Lake Michigan, which organism in the lake's food chain would test highest for the pesticide?

Accepted Answer

A)  macroinvertebrates (shrimp) 
B)  zooplankton (microscopic animals) 
C)  phytoplankton (algae) 
D)  forage fish (perch) 
E)  fish eaters (birds)

Question 10

Which of the following statements about sustainable agriculture is false?

Accepted Answer

A)  Sustainable agriculture preserves the quality of soil.
B)  Sustainable agriculture and industrialized agriculture are the same thing.
C)  Sustainable agriculture includes diversification of crops.
D)  Sustainable agriculture requires little fossil fuel derived energy.
E)  Sustainable agriculture has minimal long-term environmental impacts. B

Question 11

Which of the following statements about pesticides is false?

Accepted Answer

A)  The prolonged use of a particular pesticide can cause a pest population to develop genetic resistance to it.
B)  Most pesticides affect more species than the pests for which they are intended.
C)  Pesticides applied to agricultural lands tend to stay where they are applied.
D)  Most pesticides are chemically stable and do not degrade readily in the environment.
E)  Pesticides reduce the amount of crop loss through consumption by insects.

Question 12

What two regions of the world have the greatest food insecurity?

Accepted Answer

A)  Haiti and Brazil
B)  Central America and Iran
C)  Thailand and China
D)  Central America and Brazil
E)  sub-Saharan Africa and Thailand

Question 13

The natural or human-induced reduction in the potential ability of the land to support crops or livestock is

Accepted Answer

A)  sustainable agriculture.
B)  the green revolution.
C)  a result of intercropping.
D)  harvest deprivation.
E)  land degradation.

Question 14

All of the following are characteristics of sustainable agriculture except

Accepted Answer

A)  conservation tillage.
B)  use of legumes for nitrogen fixation.
C)  integrated pest management.
D)  slash-and-burn agriculture.
E)  use of animal manure for fertilizer.

Question 15

All of these factors contribute to the food shortages in Developing countries except

Accepted Answer

A)  rising temperatures.
B)  increased mortality of infants and children.
C)  low rate of land ownership.
D)  droughts and floods.
E)  poverty.

Question 16

Which two crops have been significantly improved by the green revolution?

Accepted Answer

A)  beets and maize
B)  sweet potatoes and taro
C)  wheat and rice
D)  corn and white potatoes
E)  barley and bulgur

Question 17

Which of the following is an example of a genetically modified crop?

Accepted Answer

A)  mangos are irradiated before shipping
B)  the most drought tolerant corn plant is singled out of a crop for cloning propagation
C)  potatoes that have developed low tolerance to fertilizer after repeated applications
D)  tall rice that has been bred with short rice to produce a denser Medium sized rice
E)  tomatoes contain a soybean's gene for disease resistance.

Question 18

Biological magnification is the increasing concentration of toxic compounds in the tissue of organisms at higher levels in food webs.

Accepted Answer

A) True 
 B)False

Question 19

Define sustainable agriculture and list three changes that would need to be incorporated into industrialized agriculture to make it more sustainable.

Accepted Answer

Sustainable agricultural methods maintai...

Question 20

The majority of GM crops in the United States are regulated by the United States Department of Agriculture.

Accepted Answer

A) True 
 B)False

Exam 14: Agriculture and Food Resources

Organisms at higher levels on food webs tend to have greater concentrations of bioaccumulated pesticide stored in their bodies through a process known as

Correct AnswerverifiedShow Answer

Subsistence agricultural practices are characterized by all of the following attributes except

Correct AnswerverifiedD

The decline of Peregrine falcons in the United States due to the use of DDT is an example of?

Correct AnswerverifiedShow Answer

Which of the following statements best describes the type of agricultural practice seen below?

Correct AnswerverifiedShow Answer

Which of the following uses of pesticide can lead to ecological imbalance?

Correct AnswerverifiedShow Answer

Pesticides are effective in

Correct AnswerverifiedShow Answer

A health concern related to the ingestion of genetically modified foods is

Correct AnswerverifiedShow Answer

Industrialized agriculture in highly developed countries requires

Correct AnswerverifiedE

If pesticide from a farm runs off into Lake Michigan, which organism in the lake's food chain would test highest for the pesticide?

Correct AnswerverifiedShow Answer

Which of the following statements about sustainable agriculture is false?

Correct AnswerverifiedB

Which of the following statements about pesticides is false?

Correct AnswerverifiedShow Answer

What two regions of the world have the greatest food insecurity?

Correct AnswerverifiedShow Answer

The natural or human-induced reduction in the potential ability of the land to support crops or livestock is

Correct AnswerverifiedShow Answer

All of the following are characteristics of sustainable agriculture except

Correct AnswerverifiedShow Answer

All of these factors contribute to the food shortages in Developing countries except

Correct AnswerverifiedShow Answer

Which two crops have been significantly improved by the green revolution?

Correct AnswerverifiedShow Answer

Which of the following is an example of a genetically modified crop?

Correct AnswerverifiedShow Answer

Biological magnification is the increasing concentration of toxic compounds in the tissue of organisms at higher levels in food webs.

Correct AnswerverifiedShow Answer

Define sustainable agriculture and list three changes that would need to be incorporated into industrialized agriculture to make it more sustainable.

Correct AnswerverifiedSustainable agricultural methods maintai...View AnswerShow Answer

The majority of GM crops in the United States are regulated by the United States Department of Agriculture.

Correct AnswerverifiedShow Answer

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D

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E

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B

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Sustainable agricultural methods maintai...
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