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UNIT 2—BETTER LIVING THROUGH AGRISCIENCE
TRUE/FALSE
1. Intensive farming practices will likely play
a big role in preserving our forests.
ANS: T PTS: 1
2. Individuals who work in the field of
environmental management might be helicopter pilots.
ANS: T PTS: 1
3. Potatoes that have been genetically modified
to resist the Colorado potato beetle unfortunately produce a chemical that also
affects humans.
ANS: F PTS: 1
4. Two of the biggest markets for U.S.
agriculture products are Canada and Mexico.
ANS: T PTS: 1
5. There is such a thing as a beneficial insect.
ANS: T PTS: 1
6. In 2002, Maryland placed a ban on genetically
engineered tomatoes.
ANS: F PTS: 1
7. Scientists place monoclonal antibodies in
goats’ milk.
ANS: F PTS: 1
8. The Green Revolution fell short of its goal
to help countries become self-sufficient in food production.
ANS: F PTS: 1
9. The soybean is the source of the world’s most
plentiful vegetable oil.
ANS: T PTS: 1
10. A major problem for humans is to avoid
contaminating food and water with secretions from their own bodies.
ANS: T PTS: 1
MULTIPLE CHOICE
1. Which of the following insects feeds on human
waste and then on human food, transmitting disease?
|
a.
|
ant
|
c.
|
cockroach
|
|
b.
|
spider
|
d.
|
cricket
|
ANS: C PTS: 1
2. Which pesticide was banned in 1972 because of
its harmful effects on the environment?
|
a.
|
DDT
|
c.
|
DAR
|
|
b.
|
ABC
|
d.
|
DPT
|
ANS: A PTS: 1
3. The use of what metal revolutionized
agriculture?
|
a.
|
lead
|
c.
|
gold
|
|
b.
|
tin
|
d.
|
iron
|
ANS: D PTS: 1
4. The insecticide DDT has been used to control
mosquitoes that carry which disease?
|
a.
|
malaria
|
|
b.
|
brucellosis
|
|
c.
|
rabies
|
|
d.
|
encephalitis
|
ANS: A PTS: 1
5. When a tree or other plant is not affected by
the presence of a harmful insect, it is described as being:
|
a.
|
immune
|
c.
|
engineered
|
|
b.
|
modified
|
d.
|
invulnerable
|
ANS: A PTS: 1
6. What two insects are beneficial to plants?
|
a.
|
bees and ladybird beetles
|
c.
|
termites and cockroaches
|
|
b.
|
cockroaches and moths
|
d.
|
ants and bees
|
ANS: A PTS: 1
7. Which of the following is a plant that hosts
nitrogen-fixing bacteria?
|
a.
|
tofu
|
c.
|
russet
|
|
b.
|
legume
|
d.
|
feedstuff
|
ANS: B PTS: 1
8. An infection of the milk-secreting glands of
cattle, goats, and other milk-producing animals is known as:
|
a.
|
coccidiosis
|
c.
|
mastitis
|
|
b.
|
impatiens
|
d.
|
antibody
|
ANS: C PTS: 1
9. Agriscience accounts for what percentage of
jobs in the United States?
|
a.
|
8
|
c.
|
12
|
|
b.
|
10
|
d.
|
14
|
ANS: D PTS: 1
10. What is a type of potato grown in the
volcanic soils of Idaho and the Northwest?
|
a.
|
Katahdin
|
c.
|
Legume
|
|
b.
|
Russet
|
d.
|
BelRus
|
ANS: B PTS: 1
COMPLETION
1. To have an adequate environment, plants,
animals, insects, soil, water, and air must be kept in ____________________.
ANS: balance
PTS: 1
2. Progress in human ____________________ has
improved because of research by agriscientists using animals and plants.
ANS: nutrition
PTS: 1
3. Increased yields in sugar per acre and rice
per acre are possible because of new ____________________ rice and sugar beet
varieties.
ANS: hybrid
PTS: 1
4. ____________________ describes the science of
food production, processing, and distribution.
ANS: Agriscience
PTS: 1
5. ____________________ is any edible material
used in the diets of animals.
ANS: Feedstuff
PTS: 1
6. A(n) __________________ is a building with
many individually owned living areas or units.
ANS: condominium
PTS: 1
7. Internal ____________________ are organisms
that live on or in other organisms with no benefit to the hosts.
ANS: parasites
PTS: 1
8. Grain today is harvested with a machine
called a(n) ____________________, which cuts and threshes in one operation.
ANS: combine
PTS: 1
9. ____________________ is a technique that
allows scientists to physically place certain genes into the cells of a plant
or an animal.
ANS: Genetic engineering
PTS: 1
10. Plant breeders developed a new technique
called _______________________ to develop hybrids and new kinds of Impatiens.
ANS: ovuleculture
PTS: 1
MATCHING
Match the following agricultural improvements.
|
a.
|
separated cotton seed from cotton fiber
|
|
b.
|
source of power for belt-driven machines
|
|
c.
|
cut small grain
|
|
d.
|
fencing wire with sharp points to discourage livestock from touching
it
|
|
e.
|
removed ears of corn from stalks
|
|
f.
|
made of steel, allowed plowing of deep soil
|
|
g.
|
cut and threshed grain in the field
|
|
h.
|
replaced hand milking
|
1. reaper
2. cotton gin
3. moldboard plow
4. tractor
5. milking machine
6. corn picker
7. barbed wire
8. combine
1. ANS: C PTS: 1
2. ANS: A PTS: 1
3. ANS: F PTS: 1
4. ANS: B PTS: 1
5. ANS: H PTS: 1
6. ANS: E PTS: 1
7. ANS: D PTS: 1
8. ANS: G PTS: 1
SHORT ANSWER
1. List three products from soybeans.
ANS:
The components of the soybean are used for hundreds of items. These
range from food products—such as tofu—to lubricants, paper, chalk, paint,
printing ink, and plastics.
PTS: 1
2. As exemplified by Honduras, what is the
traditional population pattern?
ANS:
Honduras has the traditional population pattern, with its largest number
of citizens younger than five years of age. The number per age group then
decreases to the smallest number, which occurs in the age group older than 80
years.
PTS: 1
3. What was the Green Revolution?
ANS:
The Green Revolution occurred in the 1950s when new, higher-yielding,
disease- and insect-resistant varieties of small grain were produced for
developing countries to help them become self-sufficient in food production.
PTS: 1
4. Define the term hybrid.
ANS:
A hybrid is the offspring of a plant or animal derived from the crossing
of two different species or varieties.
PTS: 1
5. What is mastitis, and why is its reduction
important?
ANS:
Mastitis is an infection of the milk-secreting glands in milk-producing
animals. The resulting loss of milk production adds millions of dollars yearly
to the cost of milk in the United States. Recent research efforts resulted in
the development of abraded plastic loops for insertion into cow udders. The
procedure resulted in a reduction in clinical mastitis of 75 percent. The
reduction in infections resulted in increased milk production, averaging nearly
4 lbs. of milk per cow per day.
PTS: 1
6. As a means of improving agriculture, why is
highly developed, complex, and expensive machinery a poor fit for undeveloped
countries?
ANS:
In the undeveloped countries of the world, many engineers, teachers, and
technicians have sought simple, tough, reliable machines to improve
agriculture. In such countries, the United States’ highly developed, complex,
computerized, and expensive machinery does not work for long. Most countries do
not have people trained for the variety of agriculture mechanics jobs that are needed
to support U.S. agriculture.
PTS: 1
7. What must a sewage system accomplish in order
to be considered safe?
ANS:
A sewage system receives and treats human waste. To be regarded as safe,
a sewage system must decompose human waste and release by-products that are
free from harmful chemicals and disease-causing organisms.
PTS: 1
8. What do Cyrus McCormick, Thomas Jefferson,
and John Deere have in common?
ANS:
They all invented machinery for agricultural purposes.
PTS: 1
9. In China, what is the 4-2-1 policy?
ANS:
In the mid-1970s, China implemented a policy whereby each couple was
limited to one child. They called it the 4-2-1 policy. This means that extended
families consisted of four grandparents, two parents, and one child.
PTS: 1
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