- 1. Pedology is the study of soil, focusing on its formation, classification, and mapping. It provides insights into the physical, chemical, biological, and mineralogical properties of soil, as well as how these properties influence plant growth and ecosystem dynamics. Pedologists examine soil profiles to understand the processes that shape different soil types over time and under various environmental conditions. By studying pedology, scientists and land managers can better manage soil resources for optimum agricultural productivity, environmental conservation, and sustainable land use practices.
What is pedology?
A) Study of soil
B) Study of rocks
C) Study of plants
D) Study of animals
- 2. Which soil pH value indicates neutral soil?
A) Greater than 7
B) 5.5
C) 7
D) Less than 7
- 3. Which of the following is a primary soil macro-nutrient essential for plant growth?
A) Nitrogen
B) Zinc
C) Calcium
D) Magnesium
- 4. Which soil animal is known for its role in improving soil aeration?
A) Ant
B) Earthworm
C) Spider
D) Beetle
- 5. What is the term for the uppermost layer of soil?
A) Parent material
B) Topsoil
C) Bedrock
D) Subsoil
- 6. What is the most influential factor in the formation of soils?
A) Topography
B) Climate
C) Biota
D) Parent material
- 7. Which of the following affects soil structure negatively?
A) Aeration
B) Compaction
C) Biological activity
D) Organic matter
- 8. Which soil texture has the smallest particle size?
A) Gravel
B) Sand
C) Clay
D) Silt
- 9. What is the term for compacted layers in soil that restrict root growth and water movement?
A) Loam
B) Histosol
C) Hardpan
D) A horizon
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