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 benefit of composting?

  1. Improving soil structure

  2. Reducing the need for chemical fertilizers

  3. Generating electricity

  4. Suppressing plant diseases
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Composting does not generate electricity. It is a natural process that enriches the soil and reduces the need for chemical fertilizers.

Multiple choice

Which herb is known for its ability to absorb heavy metals and pollutants from the soil, making it useful in bioremediation efforts?

  1. Parsley

  2. Basil

  3. Rosemary

  4. Thyme
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Parsley is known for its ability to absorb heavy metals and pollutants from the soil. It is often used in bioremediation efforts to clean up contaminated sites.

Multiple choice

Which herb is known for its ability to improve soil health and fertility by increasing microbial activity and nutrient availability?

  1. Parsley

  2. Basil

  3. Rosemary

  4. Thyme
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Parsley is known for its ability to improve soil health and fertility by increasing microbial activity and nutrient availability. It is often used as a green manure or cover crop in agricultural practices.

Multiple choice

What is the significance of soil pH in determining the suitability of soil for agriculture?

  1. It affects nutrient availability

  2. It influences soil structure

  3. It determines soil color

  4. It controls soil temperature
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Soil pH plays a crucial role in nutrient availability, as it affects the solubility and uptake of nutrients by plants.

Multiple choice

Which soil property is most important for determining the soil's ability to hold water and nutrients?

  1. Texture

  2. Structure

  3. pH

  4. Organic matter content
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Organic matter content is the most important soil property for determining the soil's ability to hold water and nutrients, as it increases the soil's cation exchange capacity and water-holding capacity.

Multiple choice

Which soil property is most important for determining the soil's drainage and aeration?

  1. Texture

  2. Structure

  3. pH

  4. Organic matter content
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Soil structure is the most important soil property for determining the soil's drainage and aeration, as it affects the soil's porosity and permeability.

Multiple choice

What is the term used to describe the practice of using food scraps and other organic materials to create a nutrient-rich soil amendment?

  1. Composting

  2. Mulching

  3. Vermicomposting

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

Composting, mulching, and vermicomposting are all terms used to describe the practice of using food scraps and other organic materials to create a nutrient-rich soil amendment.

Multiple choice

What are some examples of TEK?

  1. Knowing when to plant and harvest crops

  2. Knowing how to find water in a desert

  3. Knowing how to track animals

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

TEK can include knowledge about when to plant and harvest crops, how to find water in a desert, how to track animals, and many other things.

Multiple choice

What is the term used for the practice of composting organic waste to create a nutrient-rich soil amendment?

  1. Composting

  2. Vermicomposting

  3. Bokashi composting

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

Composting, vermicomposting, and bokashi composting are all methods of composting organic waste to create a nutrient-rich soil amendment.

Multiple choice

Which of the following is a common type of fertilizer?

  1. Urea

  2. Ammonium nitrate

  3. Potassium chloride

  4. Superphosphate
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Urea is a common type of fertilizer. It is made from the reaction of ammonia and carbon dioxide. Urea is a nitrogen-based fertilizer that is used to promote plant growth.

Multiple choice

Which of the following is a potential hazard associated with the use of fertilizers?

  1. Exposure to toxic chemicals

  2. Water contamination

  3. Soil acidification

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

The use of fertilizers poses several hazards, including exposure to toxic chemicals, water contamination, and soil acidification.

Multiple choice

Which of the following is a primary source of agricultural waste?

  1. Crop residues

  2. Animal manure

  3. Pesticides

  4. Fertilizers
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Crop residues, such as straw, stalks, and leaves, are generated during harvesting and processing of crops.

Multiple choice

What is the primary benefit of composting animal manure?

  1. Reduces odor

  2. Eliminates pathogens

  3. Enhances soil fertility

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

Composting animal manure reduces odor, eliminates pathogens, and enhances soil fertility by converting organic matter into nutrient-rich compost.

Multiple choice

Which of the following is a potential risk associated with the application of raw animal manure to agricultural fields?

  1. Nutrient leaching

  2. Groundwater contamination

  3. Spread of diseases

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

Applying raw animal manure to fields can lead to nutrient leaching, groundwater contamination, and the spread of diseases due to the presence of pathogens.

Multiple choice

What is the recommended practice for storing animal manure prior to its application to agricultural fields?

  1. In a covered lagoon

  2. In an open pit

  3. On a concrete pad

  4. In a compost pile
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Storing animal manure in a covered lagoon helps to reduce odor, prevent runoff, and minimize the risk of groundwater contamination.