1 Students type their answers here Which of the following is NOT true of the Brazilian Cerrado? A. It is a fertile rainforest B. It has more than 100,000 species of plants and animals C. Its soil is acidic and nutrient poor D. It is a major source of soybeans E. It is one of the fastest growing agricultural areas in the world

2 Students type their answers here Mineral particles in the soil are derived from A. Underlying bedrock B. Materials transported and deposited by glaciers C. Materials transported and deposited by rivers D. Materials transported and deposited by wind E. All of these are correct

3 What is the correct order of the soil horizons from top down? A. A, B, E, O B. O, E, A, B C. A, E, O, B D. O, A, E, B Students type their answers here

4 Which of the following are NOT forms of chemical deterioration of soil? A. Salinization B. Waterlogging C. Nutrient depletion D. Pollution E. Acidification Students type their answers here

5 One of the drawbacks of leaving crop residues on a field after harvest is increased A. Cost due to the high cost of fertilizers B. Pest and disease problems C. Salinization D. Energy use of machinery E. Wind erosion Students type their answers here

6 Which of these is NOT a benefit found with reduced tillage farming? A. Water conservation B. Soil preservation C. Increased crop yields D. Soil aeration E. Decreased insects and weeds Students type their answers here

7 About what portion of world freshwater withdrawals is used for agriculture? A. 1/10 B. 2/3 C. 3/4 D. 9/10 E. 1/2 Students type their answers here

8 Which is the BEST cropping method for reducing erosion? A. Rotating corn, wheat and clover B. Growing corn continuously C. Growing wheat continuously D. Growing clover continuously E. None of these is more effective in reducing erosion Students type their answers here

9 Pest organisms tend to be A. Specialist species B. Generalist species C. Migratory species D. Endemic species Students type their answers here

10 Which of the following usually has the MOST intensive use of pesticides? A. A soybean field B. A golf course C. An average U.S. kitchen D. A corn field E. All of these are comparable Students type their answers here

11 Which of the following pesticide types is extremely toxic to workers who apply them? A. Chlorinated hydrocarbons B. Carbamates C. Inorganic pesticides D. Fumigants E. Natural organic pesticides Students type their answers here

12 Which of the following are inorganic pesticides? A. Rotenone and nicotine B. Arsenic, copper, and mercury C. Carbon tetrachloride and ethylene dibromide D. DDT and mothballs E. A complex of chemicals from the chrysanthemum Students type their answers here

13 Inorganic pesticides are generally A. Highly toxic and remain in the soil for a long time B. Highly toxic and break down soon in the environment C. Moderately toxic and remain in the soil for a long time D. Moderately toxic and break down soon in the environment E. Toxic to insects but safe for humans Students type their answers here

14 Organophosphates and _________ are similar in that they lack environmental persistence and have low bioaccumulation. A. Chlorinated hydrocarbons B. Carbamates C. Inorganic pesticides D. Fumigants E. Natural organic pesticides Students type their answers here

15 In terms of agriculture, pesticides have led to _____ for consumers. A. Lower monetary costs B. More attractive produce C. Better produce quality D. More availability of produce E. All of these are correct Students type their answers here

16 Pest resurgence is part of the problem of pesticide resistance and happens when a pest organism A. That was dormant during pesticide application becomes active and produces offspring B. Adapts to the pesticide and produces tolerant offspring C. Adapts to the pesticide and produces even more pesticide-tolerant offspring D. That is tolerant to the pesticide survives and produces tolerant offspring E. Receives a gene for pesticide tolerance through a virus infection

17 Can an organism be resistant to a chemical that it has never been exposed to? A. Yes, genes for pesticide resistance can be transferred through vectors such as viruses B. Yes, pesticide resistance does not require chemical exposure and eventually all organisms become resistant C. Yes, the pesticide treadmill causes pesticide resistance D. No, there is probably some exposure that we are not aware of E. No, it is not possible for an organism be resistant to a chemical that it has never been exposed to Students type their answers here

18 The pesticide treadmill occurs when A. A virus transfers pesticide resistance to a new species B. Constantly decreasing doses of pesticides are needed to control pests C. Nontarget agricultural species are destroyed by insecticides D. Predators of the pest species are killed by broadcast spraying E. Constantly increasing doses of pesticides are needed to control pests

19 When a new pesticide is developed the best thing to do is to use it A. Sparingly, so pests will not develop a resistance B. Widely and liberally to knock out pests C. Widely and liberally, so pests will not develop a resistance D. Liberally then sparingly to prevent resistance and knock out pests E. Sparingly then liberally to prevent resistance and knock out pests

20 Organic pollutants called ________________ are showing up in many different places worldwide, far from their original source. This has led to a widespread movement to ________________. A. Persistent organic pollutants; ban twelve of them in developed countries B. Mobile organic pollutants; ban twelve of them worldwide C. Persistent organic pollutants; reduce the use of twelve of them D. Mobile organic pollutants; reduce the use of twelve of them E. Persistent organic pollutants; make them less persistent Students type their answers here