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WorksheetsAgriculture Review
Total questions: 24
Worksheet time: 48mins
Which of the following BEST illustrates a tragedy of the commons?
The Gulf of Mexico has an area known as the "Dead Zone" due to the lack of oxygen in the water. The low oxygen was caused by fertilizer runoff.
A pond on a privately owned farm is regularly fished by the family that owns it. Every year, they buy more fish to restock the pond.
A couple decides to have a large family. Every new child puts more stress on the family budget as the food, space, and other resources are divided amongst all members of the family.
A large city decides to impose fines for parking violations. As a result, more people use public transportation and traffic congestion is reduced.
The graph shows a significant decline in the Atlantic Cod stock. The cod were not owned by any processing company, and the government did not impose strict quotas on the cod. As a result, fisherman raced against each other to harvest as much cod as they could.
This is an example of...
Maximum Yield
Positive Feedback Loop
Decreased Biodiversity
Tragedy of the Commons
Which of the following soil texture contains 20% clay, 60% silt, and 20% sand?
Silt Loam
Sandy Loam
Sandy Clay
Loam
Which of the following sediments are MOST permeable?
Silt
Sand
Clay
Which of the following sediments are LEAST permeable?
Silt
Sand
Clay
A soil sample is composed of 45% clay and 20% sand. What percentage of the soil sample is silt?
(a)
Which soil horizon most likely has the highest concentration of organic material?
O Horizon
A Horizon
B Horizon
C Horizon
Which of the following is a likely consequence of the irrigation of agricultural land over time?
Depletion of aquifers in the area
Depletion of seas in the area
Increase in salinization of the soil
Decrease in salinization of the soil
The build up of salt in the soil (leading to a loss in crop productivity) is called...
irrigation
desertification
salinization
nitrification
The most common cause of the salinization of agricultural soil is...
over harvesting of crops
over irrigation
lack of fertilization
no till agriculture
Which type of irrigation is the most efficient irrigation practice, leading to the least amount of evaporation?
(a)
The pesticide treadmill occurs when...
crop variety on adjacent fields are high
selective pesticides are used
pesticides are used along with fertilizers
pests evolve to develop resistance to pesticides over time, requiring farmers to use higher doses or develop new pesticides
A farmer wants to increase his crop yields of corn with little to no use of pesticides.
Which of the following would the BEST solution?
Incorporate the practice of no-till agriculture.
Genetically modify the corn with the Bacillus thuringiensis gene.
Apply manure on his cornfields.
Plow the soil before planting seeds.
Which of the following is NOT a component of integrated pest management (IPM)?
Provide housing for pest predators such as bat houses in areas where mosquitos are abundant.
Physical removal of pests by vacuuming up insects or pulling of weed species.
Use genetically modified plants, such as Bt corn, that are designed to kill target pests.
Rotating the type of pesticide sprayed based on the temperature and humidity.
Which of the following did NOT contribute to the Dust Bowl in the 1930's?
Poor farming practices
Lack crops with roots (to prevent erosion)
Lack of irrigation
An increase in the amount of crops planted
Which of the following is a benefit of the Green Revolution?
Increased crop yields
Increased fossil fuel use
Increased reliance on agriculture
Increased use of pesticides
The amount of food grown in the United States has increased over the last 50 years. This can be majorly attributed to all of the following EXCEPT...
genetically modified crops
utilization of pest management practices
increase in fertilizer use
increase in the amount of cropland used
Genetically modified organisms, or GMOs, provide all of the following advantages EXCEPT...
plants can be engineered to resist viruses, increasing yields in areas where infection rates are high
plants can be bred to tolerate common herbicides, so fields can be sprayed with this substance which kills weeds and leaves crops intact
the use of genetically modified organisms can prevent pests from developing resistance
genetically modified organisms can be engineered to produce needed vitamins, reducing malnutrition in areas where food resources are limited
Which of the following correctly describes how the practice of tilling can lead to an increase in soil erosion?
The soil is loosened and exposed to the wind
Organic matter is mixed with the soil
Excess water is added to the soil
The soil is trampled by farming equipment, such as tractors
A soil sample is composed of 30% sand, 30% clay and 40% silt.
What is the name of the soil sample's texture?
(a)
Which of the following characteristics describes a soil sample with a texture of "sandy loam"?
It has a high permeability
It has a high nutrient concentration
It has a high retention
It has a high porosity
Which of the following is NOT an essential nutrient found in soil?
Nitrogen
Phosphorus
Potassium
Zinc
Which of the following is the best solution to reduce the chances of a "tragedy of the commons"?
Impose rules and regulations on the amount of resources that can be harvested.
Introduce additional resources into the same area.
Genetically modify the resources to resist harvesting.
Introduce predators of the resource into the area
What gives "topsoil" its dark color?
Dark rock colored particles that have eroded
Excess water found in the soil
Decomposition of living organisms
A large percentage of clay particles found in the soil
