Soils and Plant Nutrition Test 2008

  1. List one function of a leaf:
  2. List two functions of a stem:

  3. List three functions of roots:


  4. Describe a leaf adaptation that humans use to their advantage.

  5. Describe a stem adaptation that humans use to their advantage.

  6. Describe a root adaptation that humans use to their advantage.

  7. The best way to pickup up a seedling is by its ______________________.
  8. Explain what is meant by a soil's texture.


  9. Rank the three soil particle sizes from biggest to smallest.
    a. clay, silt, sand c. sand, silt, clay
    b. silt, clay, sand d. silt, sand, clay
  10. Describe the three components of a typical soil.
    a. Earth, wind, fire c. inorganics, organics, pore space
    b. N, P, K d. rocks, roots, water
  11. Plant nutrients are classified as major/minor and mobile/immobile. Compare and contrast these two ways of thinking about plant nutrients.





  12. Which of these are three mobile nutrients?
    a. Carbon, hydrogen, oxygen c. Nitrogen, phosphorus, potassium
    b. Sulfur, Iron, Nitrogen d. Water, organic material, air
  13. Describe how a leaf might look if it did not have enough of a minor element are needed for photosynthesis?

  14. Where do plants get most of their carbon?
    a. soil c. water
    b. fertilizers d. air
  15. When it comes to plant nutrients can there be too much of a good thing? Explain.


  16. What is the most effective way to improve soil structure?

  17. List the three key plant nutrients.
    a. N, P, K c. Water, air, soil
    b. nitrogen, water, potassium d. peat, perlite, small rocks
  18. Which fertilizer is best for green grass?
    a. 20-10-10 c. 5-15-10
    b. 2-2-2 d. 10-10-10
  19. Which fertilizer is best for flowers?
    a. 20-10-10 c. 5-15-10
    b. 2-2-2 d. 10-10-10
  20. The pH scale is used to measure a soil's ____
    a. acidity. c. phosphorus content.
    b. water level. d. pore space.
  21. How can pH affect a plant's growth?


  22. Explain how two of the factors in soil formation (parent materials, climate, organisms, time, topography (PCOTT)) formed the soil you chose: