Quiz about Agriculture Review

Question 1

Which of the following BEST illustrates a tragedy of the commons?

Accepted Answer

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.

Answer

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.

Answer

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.

Answer

A large city decides to impose fines for parking violations. As a result, more people use public transportation and traffic congestion is reduced.

Question 2

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...

Accepted Answer

Tragedy of the Commons

Answer

Maximum Yield

Answer

Positive Feedback Loop

Answer

Decreased Biodiversity

Question 3

Which of the following soil texture contains 20% clay, 60% silt, and 20% sand?

Accepted Answer

Silt Loam

Answer

Sandy Loam

Answer

Sandy Clay

Answer

Loam

Question 4

Which of the following sediments are MOST permeable?

Accepted Answer

Sand

Answer

Silt

Answer

Clay

Question 5

Which of the following sediments are LEAST permeable?

Accepted Answer

Clay

Answer

Silt

Answer

Sand

Question 6

Which soil horizon most likely has the highest concentration of organic material?

Accepted Answer

O Horizon

Answer

A Horizon

Answer

B Horizon

Answer

C Horizon

Question 7

Which of the following is a likely consequence of the irrigation of agricultural land over time?

Accepted Answer

Increase in salinization of the soil

Answer

Depletion of aquifers in the area

Answer

Depletion of seas in the area

Answer

Decrease in salinization of the soil

Question 8

The build up of salt in the soil (leading to a loss in crop productivity) is called...

Accepted Answer

salinization

Answer

irrigation

Answer

desertification

Answer

nitrification

Question 9

The most common cause of the salinization of agricultural soil is...

Accepted Answer

over irrigation

Answer

over harvesting of crops

Answer

lack of fertilization

Answer

no till agriculture

Question 10

The pesticide treadmill occurs when...

Accepted Answer

pests evolve to develop resistance to pesticides over time, requiring farmers to use higher doses or develop new pesticides

Answer

crop variety on adjacent fields are high

Answer

selective pesticides are used

Answer

pesticides are used along with fertilizers

Question 11

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?

Accepted Answer

Genetically modify the corn with the Bacillus thuringiensis gene.

Answer

Incorporate the practice of no-till agriculture.

Answer

Apply manure on his cornfields.

Answer

Plow the soil before planting seeds.

Question 12

Which of the following is NOT a component of integrated pest management (IPM)?

Accepted Answer

Rotating the type of pesticide sprayed based on the temperature and humidity.

Answer

Provide housing for pest predators such as bat houses in areas where mosquitos are abundant.

Answer

Physical removal of pests by vacuuming up insects or pulling of weed species.

Answer

Use genetically modified plants, such as Bt corn, that are designed to kill target pests.

Question 13

Which of the following did NOT contribute to the Dust Bowl in the 1930's?

Accepted Answer

An increase in the amount of crops planted

Answer

Poor farming practices

Answer

Lack crops with roots (to prevent erosion)

Answer

Lack of irrigation

Question 14

Which of the following is a benefit of the Green Revolution?

Accepted Answer

Increased crop yields

Answer

Increased fossil fuel use

Answer

Increased reliance on agriculture

Answer

Increased use of pesticides

Question 15

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...

Accepted Answer

increase in the amount of cropland used

Answer

genetically modified crops

Answer

utilization of pest management practices

Answer

increase in fertilizer use

Question 16

Genetically modified organisms, or GMOs, provide all of the following advantages EXCEPT...

Accepted Answer

the use of genetically modified organisms can prevent pests from developing resistance

Answer

plants can be engineered to resist viruses, increasing yields in areas where infection rates are high

Answer

plants can be bred to tolerate common herbicides, so fields can be sprayed with this substance which kills weeds and leaves crops intact

Answer

genetically modified organisms can be engineered to produce needed vitamins, reducing malnutrition in areas where food resources are limited

Question 17

Which of the following correctly describes how the practice of tilling can lead to an increase in soil erosion?

Accepted Answer

The soil is loosened and exposed to the wind

Answer

Organic matter is mixed with the soil

Answer

Excess water is added to the soil

Answer

The soil is trampled by farming equipment, such as tractors

Question 18

Which of the following characteristics describes a soil sample with a texture of "sandy loam"?

Accepted Answer

It has a high permeability

Answer

It has a high nutrient concentration

Answer

It has a high retention

Answer

It has a high porosity

Question 19

Which of the following is NOT an essential nutrient found in soil?

Accepted Answer

Zinc

Answer

Nitrogen

Answer

Phosphorus

Answer

Potassium

Question 20

Which of the following is the best solution to reduce the chances of a "tragedy of the commons"?

Accepted Answer

Impose rules and regulations on the amount of resources that can be harvested.

Answer

Introduce additional resources into the same area.

Answer

Genetically modify the resources to resist harvesting.

Answer

Introduce predators of the resource into the area

Question 21

What gives "topsoil" its dark color?

Accepted Answer

Decomposition of living organisms

Answer

Dark rock colored particles that have eroded

Answer

Excess water found in the soil

Answer

A large percentage of clay particles found in the soil

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