Question 1

The parent material layer of a soil is composed of weathered

Accepted Answer

A)   humus.
B)   organic detritus and roots.
C)   residual aluminum and iron.
D)   soil.
E)   rock fragments.F) B) and E)
G) A) and C)

Question 2

The three crops that humans rely on for the majority of nutrients and calories are

Accepted Answer

A)   potatoes, wheat, and oats.
B)   wheat, rice, and maize.
C)   barley, oats, and rye.
D)   maize, oats, and rice.
E)   oats, beans, and barley.F) B) and C)
G) A) and E)

Question 3

Which is a disadvantage of conservation tillage methods?

Accepted Answer

A)   increased irrigation requirements
B)   less efficient use of fertilizer
C)   increased pests and weeds
D)   decreased crop yields
E)   none of these are correct.F) A) and B)
G) A) and D)

Question 4

More than 70% of all soybeans, corn, and cotton grown in the United States are genetically modified.

Accepted Answer

A) True 
 B)False  True

Question 5

Contour plowing and strip farming are methods designed to

Accepted Answer

A)   prevent weed spreading.
B)   improve plowing efficiency.
C)   improve harvesting efficiency.
D)   prevent water and soil loss.
E)   make farms more attractive.F) D) and E)
G) B) and C)

Question 6

What is the basis of the statement that we could feed more people if we would eat grain rather than feeding it to livestock?

Accepted Answer

A)   the First Law of Thermodynamics
B)   the Second Law of Thermodynamics
C)   ecofeminism
D)   biocentrism
E)   anthropocentrismF) C) and E)
G) None of the above

Question 7

Genetically modified organisms (GMOs) are made by taking bits of DNA from different sources to create desired characteristics in an organism.

Accepted Answer

A) True 
 B)False

Question 8

Sustainable farming

Accepted Answer

A)   is cheaper and safer than conventional farming.
B)   is safe, although it causes weed problems.
C)   uses fewer chemicals but more water than conventional methods.
D)   is an invention of modern agricultural research.
E)   is safer than conventional farming, but much more expensive.F) C) and D)
G) A) and E)

Question 9

The number of genetically modified organisms (GMOs) and the acreage devoted to growing them has decreased in the past fifteen years because of the huge number of opponents.

Accepted Answer

A) True 
 B)False

Question 10

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

Accepted Answer

A)   irrigation in arid areas.
B)   building up soil reserves on farms worldwide.
C)   clearing rainforests.
D)   an increase on the land being used for agriculture, especially in developed countries.
E)   new crop varieties and intensified farming.F) All of the above
G) A) and E)

Question 11

Vitamin A deficiencies are associated with

Accepted Answer

A)   anemia.
B)   weak bones.
C)   a lack of energy, or listlessness.
D)   poorly developed neural systems in embryos.
E)   dry eyes and retinal degeneration.F) A) and D)
G) A) and B) E

Question 12

The energy needed to process and distribute food in the US is as much as _______ times the amount that is used to actually farm the crops.

Accepted Answer

A)   0.5
B)   2
C)   3.5
D)   5
E)   8F) B) and E)
G) A) and B)

Question 13

You can participate in sustainable agriculture by

Accepted Answer

A)   buying local produce.
B)   eating lower on the food chain.
C)   participating in CSAs.
D)   doing all of the things listed above.E) B) and C)
F) A) and D)

Question 14

What are two common diseases that result from protein deficiencies?

Accepted Answer

A)   dysentery and diarrhea
B)   dysentery and scurvy
C)   scurvy and pellagra
D)   goiter and cretinism
E)   marasmus and kwashiorkorF) A) and D)
G) B) and E)

Question 15

Famines are most often serious when there is

Accepted Answer

A)   a very serious drought.
B)   no room to expand agriculture.
C)   steady population growth.
D)   drought and war together.
E)   an attempt by indigenous people to return to old traditions and lands.F) B) and C)
G) D) and E)

Question 16

The layer of soil that is a mixture of minerals and organic material is the

Accepted Answer

A)   O horizon
B)   A horizon
C)   humus
D)   E horizon
E)   primary layerF) A) and E)
G) C) and E) B

Question 17

Fifty years ago, there were several hundred varieties of wheat grown in the Middle East. Now a few of the more modern high responder varieties have replaced the indigenous species. What are the implications of this change?

Accepted Answer

A)   The productivity of wheat should continue to rise and increase the availability of food per person.
B)   Genetic resources are diminished and an epidemic of wheat disease is highly likely due to the reliance on few species.
C)   The high responder varieties will need specialized harvesting methods because they are so productive.
D)   The biodiversity of wheat species has increased because of the introduction of few hybrid species.
E)   All of these are correct.F) A) and C)
G) B) and E)

Question 18

Goiter is a common disease resulting from a shortage of dietary

Accepted Answer

A)   protein.
B)   iodine.
C)   iron.
D)   Vitamin A.
E)   folic acid.F) C) and D)
G) A) and B)

Question 19

Which of the following are forms of chemical deterioration of soil?

Accepted Answer

A)   salinization and acidification
B)   waterlogging and laterization
C)   compaction and nutrient depletion
D)   pollution and waterlogging
E)   water and wind erosionF) A) and B)
G) A) and C)

Question 20

Which of these is not a benefit found with reduced tillage farming?

Accepted Answer

A)   water conservation
B)   soil preservation
C)   increased crop yields
D)   soil aeration and loosening
E)   decreased insects and weedsF) A) and D)
G) A) and B)

Exam 7: Food and Agriculture

The parent material layer of a soil is composed of weathered

Correct AnswerverifiedShow Answer

The three crops that humans rely on for the majority of nutrients and calories are

Correct AnswerverifiedShow Answer

Which is a disadvantage of conservation tillage methods?

Correct AnswerverifiedShow Answer

More than 70% of all soybeans, corn, and cotton grown in the United States are genetically modified.

Correct AnswerverifiedTrue

Contour plowing and strip farming are methods designed to

Correct AnswerverifiedShow Answer

What is the basis of the statement that we could feed more people if we would eat grain rather than feeding it to livestock?

Correct AnswerverifiedShow Answer

Genetically modified organisms (GMOs) are made by taking bits of DNA from different sources to create desired characteristics in an organism.

Correct AnswerverifiedShow Answer

Sustainable farming

Correct AnswerverifiedShow Answer

The number of genetically modified organisms (GMOs) and the acreage devoted to growing them has decreased in the past fifteen years because of the huge number of opponents.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Vitamin A deficiencies are associated with

Correct AnswerverifiedE

The energy needed to process and distribute food in the US is as much as _______ times the amount that is used to actually farm the crops.

Correct AnswerverifiedShow Answer

You can participate in sustainable agriculture by

Correct AnswerverifiedShow Answer

What are two common diseases that result from protein deficiencies?

Correct AnswerverifiedShow Answer

Famines are most often serious when there is

Correct AnswerverifiedShow Answer

The layer of soil that is a mixture of minerals and organic material is the

Correct AnswerverifiedB

Fifty years ago, there were several hundred varieties of wheat grown in the Middle East. Now a few of the more modern high responder varieties have replaced the indigenous species. What are the implications of this change?

Correct AnswerverifiedShow Answer

Goiter is a common disease resulting from a shortage of dietary

Correct AnswerverifiedShow Answer

Which of the following are forms of chemical deterioration of soil?

Correct AnswerverifiedShow Answer

Which of these is not a benefit found with reduced tillage farming?

Correct AnswerverifiedShow Answer

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True

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E

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B

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