Environmental Studies ยท Biology

Soil Science and Fertilizers

1,537 Questions

Soil science focuses on soil formation, classification, and fertility management using fertilizers and organic amendments. Agricultural and environmental science exams heavily feature questions on biofertilizers, mycorrhiza, and phytoremediation. Practice these questions to build a strong understanding of soil nutrient cycles.

Phytoremediation techniquesOrganic soil amendmentsBiofertilizers and mycorrhizaNitrous oxide emissionsIn-situ soil remediationGreen manuring effects

Soil Science and Fertilizers Questions

Multiple choice

Which of the following is NOT a supporting service?

  1. Nutrient cycling

  2. Soil formation

  3. Water cycling

  4. Decomposition
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Decomposition is a regulating service, as it helps to regulate the populations of decomposers.

Multiple choice

Which of the following is an example of a supporting service?

  1. Pollination

  2. Water purification

  3. Soil formation

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Pollination, water purification, and soil formation are all examples of supporting services.

Multiple choice

How does soil contamination affect soil fertility?

  1. It reduces the availability of nutrients to plants.

  2. It increases the acidity or alkalinity of the soil.

  3. It alters the soil structure and texture.

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Soil contamination can affect soil fertility by reducing the availability of nutrients to plants, increasing the acidity or alkalinity of the soil, and altering the soil structure and texture.

Multiple choice

Which of the following is NOT a common soil remediation technique?

  1. Excavation and disposal

  2. In situ bioremediation

  3. Phytoremediation

  4. Fertilization
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Fertilization is not a common soil remediation technique because it does not directly address the removal or reduction of soil contaminants.

Multiple choice

Phytoremediation utilizes:

  1. Plants to absorb and accumulate contaminants

  2. Microorganisms to degrade contaminants

  3. Chemical amendments to enhance biodegradation

  4. Physical methods to remove contaminants
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Phytoremediation utilizes plants to absorb and accumulate contaminants from the soil through their roots and store them in their tissues.

Multiple choice

Which of the following is NOT a factor that influences the effectiveness of soil remediation?

  1. Type and concentration of contaminants

  2. Soil type and characteristics

  3. Climate conditions

  4. Cost of remediation
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The cost of remediation is not a factor that directly influences the effectiveness of soil remediation.

Multiple choice

Which of the following is NOT a common indicator of soil contamination?

  1. Discolored soil

  2. Unusual odors

  3. Stunted plant growth

  4. Healthy soil biodiversity
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Healthy soil biodiversity is not a common indicator of soil contamination.

Multiple choice

What is soil contamination?

  1. The presence of harmful substances in soil that can pose a risk to human health and the environment

  2. The process of adding nutrients to soil to improve its fertility

  3. The natural breakdown of organic matter in soil

  4. The movement of water through soil
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Soil contamination occurs when harmful substances, such as heavy metals, pesticides, or industrial chemicals, are introduced into the soil. These substances can come from a variety of sources, including industrial activities, mining, agriculture, and waste disposal.

Multiple choice

What are some strategies to prevent soil contamination?

  1. Reduce the use of pesticides and fertilizers

  2. Properly dispose of waste

  3. Clean up contaminated sites

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

There are a number of strategies that can be used to prevent soil contamination. These include reducing the use of pesticides and fertilizers, properly disposing of waste, and cleaning up contaminated sites. Reducing the use of pesticides and fertilizers can help to reduce the amount of harmful chemicals that are released into the environment. Properly disposing of waste can help to prevent harmful chemicals from being released into the soil. Cleaning up contaminated sites can help to remove harmful chemicals from the soil and make it safe for use.

Multiple choice

What are some strategies to mitigate the effects of soil contamination?

  1. Use soil amendments to reduce the bioavailability of contaminants

  2. Plant crops that are tolerant to contaminants

  3. Irrigate crops with clean water

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

There are a number of strategies that can be used to mitigate the effects of soil contamination. These include using soil amendments to reduce the bioavailability of contaminants, planting crops that are tolerant to contaminants, and irrigating crops with clean water. Soil amendments can help to bind contaminants to the soil and make them less available to plants. Crops that are tolerant to contaminants can be grown in contaminated soil without being harmed. Irrigating crops with clean water can help to dilute the concentration of contaminants in the soil and reduce the amount of contaminants that are taken up by plants.

Multiple choice

Which of the following is NOT a potential source of biological soil contamination?

  1. Sewage sludge

  2. Animal manure

  3. Compost

  4. Natural decomposition
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Biological soil contamination can be caused by a number of human activities, such as the application of sewage sludge and animal manure to soil. Natural decomposition is not a potential source of biological soil contamination.

Multiple choice

Which of the following is NOT a method of soil remediation?

  1. Excavation

  2. In situ treatment

  3. Phytoremediation

  4. Natural attenuation
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Natural attenuation is not a method of soil remediation. It is a process that occurs naturally over time.

Multiple choice

Which of the following is NOT a benefit of soil remediation?

  1. Improved soil quality

  2. Reduced risk of human exposure to contaminants

  3. Increased property values

  4. Increased soil erosion
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Soil remediation does not increase soil erosion. It can actually help to reduce soil erosion by improving soil structure and reducing the amount of runoff.

Multiple choice

Which soil remediation technique involves removing contaminated soil and replacing it with clean soil?

  1. Phytoremediation

  2. Bioremediation

  3. Excavation and replacement

  4. Soil washing
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Excavation and replacement involve removing contaminated soil and replacing it with clean soil, which is a common remediation technique for heavily contaminated sites.

Multiple choice

Which of the following is NOT a common source of soil contamination in agricultural areas?

  1. Pesticides

  2. Herbicides

  3. Fertilizers

  4. Acid rain
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Acid rain is primarily caused by industrial emissions and is not a common source of soil contamination in agricultural areas.