Chapter 11 Quiz

Which of the following does NOT explain the rise of modern farming system?

• The cost of labor varies from country to country.

• Small farms are usually more profitable than large farms.

• Irrigation contributes to greater crop yield.

• Fertilizers improve crop yields and are easy to apply.

• Mechanization facilitates monocropping and improves profits.

Irrigation can result in which of the following environmental problems? Check all that apply.

• Reduction of evaporation rates

• Accumulation of salts in soil.

• Waterlogging of soil and plant roots.

• Reduction of runoff and erosion.

The use of synthetic fertilizers increases crop yields, but also

• destroys the nitrifying bacteria in the soil

• increases fish populations in nearby streams

• decreases phosphorus concentrations in the atmosphere

• increases nutrient runoff into bordering surface waters.

Which of the following statements BEST describes the pesticide treadmill?

• Broad-spectrum pesticides degrade into selective pesticides, thereby killing a wide range of insect pests over a long period.

• Pesticides accumulate in the fatty tissues of consumers and increase in concentration as they move up the food chain.

• Some pest populations evolve resistance to pesticides, which become less effective over time, so that new pesticides must be developed/

• Beneficial insects and natural predators are killed at a faster rate than the pest insects.

In which of the following ways did the Green Revolution increase food production? Check all that apply.

• The development of disease resistant and high yielding crop plants.

• Monocropping and widespread use of machinery.

• The application of fertilizers and the use of irrigation techniques.

• The decrease use of livestock as draft animals to pull carts and equipment.

Which of the following is NOT a traditional farming technique that is used in sustainable agriculture?

• Nomadic herding

• intercropping

• Crop Rotation

• Agroforestry

• Contour plowing

Which of the following practices is NOT a part of IPM?

• Crop rotation

• elimination of pesticides

• use of pest resistant crops

• Introduction of predators

Critics of using GMOs as food crops warn of which of the following dangers. Check all that apply.

• Introduction of allergens into the food supply

• Loss of genetic diversity in food crops

• Decreases in food production worldwide

CAFOs can BEST be described as

• facilities were a large number of animals are housed and fed in a confined place.

• a method of producing more meat at a higher cost.

• a means of producing great quantities of manure to fertilize fields organicaly.

• an experimental plan to test the effectiveness of antibiotics.

Which of the following is an environmental effect of bycatch?

• Juvenile fish are too small and slip through the nets, thereby ensuring the next generation of commercial fish.

• Predators caught in the nets feed on the commercially important fish also caught thereby reducing the total catch.

• Nontarget fish population have declined.

• Cod populations have increased due to the removal of competitor species.