Food and Agriculture
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Assessment
Chapter Test B
Food and Agriculture
MATCHING
In the space provided, write the letter of the term that best matches the description.
_____1.widespread food shortage that results in many people not having enough food
_____2.the amount of a crop produced per hectare (or acre)
_____3.upper layer of soil consisting of rock particles, water, air, and organic matter
_____4.health problem caused by not eating enough necessary nutrients
_____5.loss of fertile soil when it is blown away by wind or washed away by water
_____6.changes in the genetic makeup of pest populations that result in the ability to tolerate particular pesticides
MULTIPLE CHOICE
In the space provided, write the letter of the term or phrase that best completes each statement or best answers each question.
_____7.Farmland may become desertified if
a.domestic animals are allowed to overgraze the land.
b.too many crops are grown on the land and the land gradually loses its fertility.
c.there is no fertile soil left to grow plants due to erosion.
d.All of the above
_____8.Which of the following is a good way to reduce salinization?
a.use ocean water instead of groundwater to irrigate crops
b.increase the use of synthetic pesticides
c.use organic fertilizers in place of chemical fertilizers
d.adopt no-till farming methods
_____9.Which of the following actions contributes to soil erosion?
a.using compost as fertilizer c.driving farm machinery over
fields
b.practicing crop rotation d. all of the above
_____ 10. ______land is land on which it is possible to grow crops.
a.Organic c. Vegetative
b.Agricultural d. All of the above
Chapter Test B continued
_____11.DDT is harmful to the environment because
a.it does not break down quickly into harmless chemicals.
b.it concentrates in the bodies of animals high in the food chain.
c.it causes some birds to lay eggs with shells so thin that they break when the birds sit on them.
d.All of the above
_____ 12. Which of the following farm practices has been used by farmers only in recent years?
a.fertilizing crops c. pest control
b.irrigation d. none of the above
_____ 13. When a farmer uses no-till farming methods,
a.seeds are planted among the roots of the previous crop.
b.more erosion is likely.
c.only organic fertilizers are used.
d.All of the above
_____ 14. Which of the following best describes why many people in the world go hungry?
a.Food production has not been increasing as fast as the human population, and it is difficult to distribute food to everyone who needs it.
b.There is plenty of food produced for everyone to have more than enough, but it is not distributed equally.
c.In recent years, the human population has been growing, but food production has been falling.
d.Throughout human history, many people have not had enough to eat, but new farming methods mean that this will not be a problem in the next century.
COMPLETION
Fill in the missing word or phrase that best completes the following statements.
15.______a modern method of controlling pests, reduces but does not completely eliminate pest populations.
16.The technology of ______allows desirable traits in crop plants to be passed on through the direct transfer of genes for those traits.
17.No-fishing zones are created as an effort to reduce the effects of ______.
18.______is raising aquatic organisms for human use and consumption.
19.Cattle, goats, pigs, sheep, and chickens are all types of ______.
20.______animal species are those bred and managed for human use.
Chapter Test B continued
SHORT ANSWER
Write the answers to the following questions in the spaces provided.
21.Explain how pests develop resistance to pesticides.
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22.Describe two farming practices that can help reduce erosion caused by water.
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Chapter Test B continued
PROBLEM SOLVING
23.The approximate energy yield of carbohydrates is 4 Cal/g; fats yield about 9 Cal/g, and proteins around 4 Cal/g. Assume the following about the food that Brad and Jenny consumed for lunch: Brad—100 g protein, 20 g fats, 75 g carbohydrates; Jenny—75 g protein, 10 g fats, 75 g carbohydrates. How many Calories each did Brad and Jenny consume? What was the percentage of fat Calories in the meal for each person?
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24.If Brad eats the same number and breakdown of Calories for breakfast and dinner as for lunch, what is his total intake of Calories for the day (no snacks)? What percentage of his day’s Calories come from protein and from carbohydrates?
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25.Some people feel that the green revolution is a wonderful example of 20th-century technology that benefits millions of people. Others believe that the problems caused by the green revolution outweigh its benefits. Explain the advantages and drawbacks of the green revolution by outlining both sides of this debate, and then state your own opinion.
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