5. Which of the following soil textures has the highest water-holding capacity?
a. Sandy loam
b. Clay loam
c. Silty clay loam
d. Loamy sand
Answer: b
6. What is the term used to describe the movement of water and dissolved nutrients through the soil?
a. Leaching
b. Capillary action
c. Transpiration
d. Precipitation
Answer: a
7. Which of the following is a nutrient essential for plant growth?
a. Nitrogen
b. Oxygen
c. Carbon dioxide
d. Water
Answer: a
8. What is the pH range for most agricultural soils?
a. 0-3
b. 3-5
c. 5-7
d. 7-9
Answer: c
9. Which of the following soil horizons is typically found below the A horizon?
a. B horizon
b. C horizon
c. O horizon
d. R horizon
Answer: a
10. Which of the following is not a type of soil structure?
a. Platy
b. Granular
c. Prismatic
d. Gelatinous
Answer: d
