Soil And Agriculture (pretest)

25 July 2022
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10 test answers

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question
The high productivity of American agriculture is exemplified by _______. a. low crop yields per farm worker b. high crop yields per farm worker c. the small cultivated area per inhabitant d. the small cultivated area per farmer
answer
B. high crop yields per farm worker
question
Field patterns are the same in all parts of the world.
answer
False
question
The main target when controlling the acidity of soils is ______. a. neutralizing the pH b. adding base c. replacing lost cation nutrients d. eliminating humic acids
answer
c. replacing lost cation nutrients
question
Which of the following is not true concerning tropical plantations? a. They are generally found in humid, tropical climates. b. Wheat and corn are common products of tropical plantations. c. Most crops from tropical plantations are exported. d. Cocoa, coffee and tea are common products of tropical plantations.
answer
b. Wheat and corn are common products of tropical plantations.
question
Crop rotation is a method of soil conservation because _______. a. the land produces more than one type of crop b. it requires plowing and tilling that reduces soil compaction c. it does not use the same parcel of land in sequential seasons d. it avoids the depletion of soil nutrients
answer
d. it avoids the depletion of soil nutrients
question
Which of the following best explains why soil conservation is important to human agriculture? a. Erosion prevention prevents millions of dollars in damage from mudslides. b. It is easier to prevent the degradation of old soil than it is to generate new soil. c. If the soil salinity gets too high crops will not be able to grow in it. d. Soil contamination is a hazard to human and animal health.
answer
b. It is easier to prevent the degradation of old soil than it is to generate new soil.
question
Pastoral farming is best described as _______. a. a method of raising livestock and moving herds b. an African method of agriculture c. a method of cultivating crops on poor soils d. a common method of desert farming
answer
A. a method of raising livestock and moving herds
question
The shrubs and trees in windbreaks protect soil from erosion by rain water.
answer
False
question
Contour farming is a method for plowing across the slope of steep hills.
answer
True
question
Which of the following is not an agricultural technique? a. irrigation b. selective breeding c. livestock herding d. none of the above
answer
D. none of the above