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
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
7. Which of the following is a nutrient essential for plant growth?
a. Nitrogen
b. Oxygen
c. Carbon dioxide
d. Water
8. What is the pH range for most agricultural soils?
a. 0-3
b. 3-5
c. 5-7
d. 7-9
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
10. Which of the following is not a type of soil structure?
a. Platy
b. Granular
c. Prismatic
d. Gelatinous
