11. Which of the following soil organisms is responsible for breaking down dead organic matter?
a. Bacteria
b. Fungi
c. Protozoa
d. Nematodes
Answer: b
12. What is the term used to describe the process of soil particles being blown away by wind?
a. Erosion
b. Leaching
c. Weathering
d. Deposition
Answer: a
13. Which of the following nutrients is most likely to be deficient in a soil with a high pH?
a. Nitrogen
b. Phosphorus
c. Potassium
d. Calcium
Answer: b
14. Which of the following soil properties affects the ability of soil to hold and exchange nutrients?
a. Texture
b. Structure
c. pH
d. All of the above
Answer: d
15. Which of the following soil horizons is typically the topsoil?
a. A horizon
b. B horizon
c. C horizon
d. O horizon
Answer: a
