Environmental Studies · Biology

Soil Science and Fertilizers

1,509 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 general knowledge impact of technology on livelihoods animal husbandry and fishery cattle farming agriculture sector

With reference to micro-irrigation, which of the following statements is/are correct?
1. Fertiliser/nutrient loss can be reduced. 
2. It is the only means of irrigation in dry land farming.
3. In some areas of farming, receding of groundwater table can be checked.
Select the correct answer using the codes given below.

  1. Only 1

  2. 2 and 3

  3. 1 and 3

  4. 1, 2 and 3
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Micro-irrigation reduces nutrient loss (1) and helps check groundwater depletion (3). Statement 2 is incorrect because it is not the 'only' means of irrigation in dry land farming.

Multiple choice general knowledge impact of technology on livelihoods animal husbandry and fishery cattle farming agriculture sector

With reference to micro-irrigation, which of the following statements is/are correct?
1. Fertiliser/nutrient loss can be reduced.
2. It is the only means of irrigation in dry land farming.
3. In some areas of farming, receding of ground water level can be checked.
Select the correct answer using the codes given below.

  1. Only 1

  2. 2 and 3

  3. 1 and 3

  4. All of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Multiple choice

Which of the following is NOT a common type of fruit tree fertilizer?

  1. Nitrogen

  2. Phosphorus

  3. Potassium

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

Lime is not a common type of fruit tree fertilizer. Nitrogen, Phosphorus, and Potassium are all common fertilizers used for fruit trees.

Multiple choice

The symbiotic relationship between certain plants and fungi, where the fungus helps the plant absorb nutrients from the soil, is known as:

  1. Mycorrhizae

  2. Nitrogen fixation

  3. Rhizobia

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

Mycorrhizae is a mutually beneficial relationship between plants and fungi, where the fungus helps the plant absorb nutrients from the soil, while the plant provides the fungus with carbohydrates.

Multiple choice

What is the primary role of soil in supporting plant growth?

  1. Providing nutrients

  2. Anchoring roots

  3. Storing water

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

Soil plays a crucial role in providing nutrients, anchoring roots, and storing water, all of which are essential for plant growth.

Multiple choice

What is the term for the process of improving the soil's fertility and structure?

  1. Soil amendment

  2. Soil conditioning

  3. Soil enrichment

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

Soil amendment is the process of improving the soil's fertility and structure by adding organic matter, fertilizers, or other materials.

Multiple choice

Which of the following is a common type of soil amendment used in desertified areas?

  1. Compost

  2. Manure

  3. Mulch

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

Compost, manure, and mulch are all common types of soil amendments used in desertified areas, as they help to improve soil fertility, structure, and water retention.

Multiple choice

What is the primary role of organic matter in soil fertility management?

  1. It enhances soil structure and water retention capacity.

  2. It serves as a source of nutrients for plants.

  3. It promotes microbial activity and nutrient cycling.

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

Organic matter plays a crucial role in soil fertility management by improving soil structure, enhancing water retention capacity, providing nutrients for plants, and supporting microbial activity, which contributes to nutrient cycling.

Multiple choice

Which of the following is a commonly used method for improving soil fertility?

  1. Crop rotation

  2. Fertilization

  3. Liming

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

Crop rotation, fertilization, and liming are all widely used methods for improving soil fertility. Crop rotation helps maintain soil nutrient balance, fertilization provides essential nutrients for plant growth, and liming adjusts soil pH and improves nutrient availability.

Multiple choice

Which nutrient is commonly deficient in acidic soils?

  1. Nitrogen

  2. Phosphorus

  3. Potassium

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

Acidic soils often have low levels of calcium, which can lead to nutrient imbalances and reduced plant growth. Liming is a common practice to raise soil pH and increase calcium availability.

Multiple choice

What is the primary role of nitrogen in plant growth?

  1. It promotes root development.

  2. It enhances photosynthesis.

  3. It aids in protein synthesis.

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

Nitrogen plays a vital role in plant growth by promoting root development, enhancing photosynthesis, and aiding in protein synthesis. It is an essential nutrient for plant growth and productivity.

Multiple choice

Which of the following is a common source of organic matter in soil fertility management?

  1. Crop residues

  2. Animal manure

  3. Compost

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

Crop residues, animal manure, and compost are all valuable sources of organic matter that can be incorporated into the soil to improve fertility. They provide nutrients, enhance soil structure, and support microbial activity.

Multiple choice

Which of the following is a common practice for managing soil pH in soil fertility management?

  1. Liming

  2. Acidification

  3. Salinization

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

Liming is a common practice used to manage soil pH in soil fertility management. It involves adding alkaline materials, such as agricultural lime, to the soil to raise the pH and improve nutrient availability.

Multiple choice

Which of the following is a common practice for managing soil salinity in soil fertility management?

  1. Leaching

  2. Irrigation

  3. Drainage

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

Managing soil salinity in soil fertility management involves a combination of practices, including leaching, irrigation, and drainage. Leaching helps remove excess salts from the soil, irrigation provides water to dilute salt concentrations, and drainage allows excess water and salts to drain away.

Multiple choice

Which of the following is an example of phytoremediation?

  1. Using bacteria to break down pollutants

  2. Using plants to absorb pollutants

  3. Using chemicals to neutralize pollutants

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Phytoremediation is the process of using plants to absorb pollutants. An example of phytoremediation is using sunflowers to absorb heavy metals from soil.