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Horticulture Final 2009

  1. Horticulture is the art and science of
    a. growing plants. c. growing plants useful to humanity.
    b. growing plants you can eat. d. studying plants.
  2. The process that uses light energy to create an organic compound from a gas is called
    a. respiration c. photosynthesis
    b. transpiration d. perspiration
  3. What is the primary function of the leaf?
    a. respiration c. photosynthesis
    b. transpiration d. perspiration
  4. The process that moves water and nutrients from the roots to the leaves is called
    a. respiration c. photosynthesis
    b. transpiration d. perspiration
  5. What do stomata do for the plant?
    a. allow gas exchange. c. prevent an explosion.
    b. reduce the leaf weight. d. let more light into the leaf.
  6. The guard cells around a stomata close the stomata when
    a. insects attack. c. the plant is too low on water.
    b. the plant has too much water. d. photosynthesis must start.
  7. What structures might you find at a node?
    a. leaf c. stipule
    b. axial bud d. all of these
  8. A plant structure made of group of tubes with some tubes moving water and minerals and other tubes moving sugars is called
    a. a node c. xylem
    b. phloem. d. a vascular bundle.
  9. Water and dissolved minerals are transported from root to leaf by the
    a. xylem c. phloem
    b. cambium d. meristem
  10. Sugars are transported from the leaf to root by the
    a. xylem c. phloem
    b. cambium d. meristem
  11. Primary plant growth occurs at the
    a. lateral bud c. phloem
    b. root tip d. terminal bud and root tip
  12. When transplanting plants their root hairs are usually broken. The plant will wilt for a few days before it grows new root hairs and recovers. This wilting is called
    a. transplant crash c. transplant vigor.
    b. transplant rest. d. transplant shock.
  13. The two main ways to propagate plants are:
    a. sexual and asexual c. seeds and spores
    b. seeds and bulbs d. seeds and sexual
  14. Damping-off organisms are best described as :
    a. undercover super heroes c. virus
    b. fungi d. bacteria
  15. Which of these is NOT a symptom of damping-off?
    a. Seeds fail to emerge. c. Seeds are soft and mushy.
    b. Seedlings topple over. d. Stems appear cut.
  16. Where do damping-off organisms live?
    a. in water c. in the embryo
    b. in the soil d. in the Bat Cave, Robin.
  17. What is the most important method for controlling damping-off?
    a. good sanitation c. sterilized water
    b. chemical sprays d. planting seeds deeply
  18. The process of grouping things together on the basis of the features they have in common is called
    a. classification c. taxonomy
    b. phylogenetic d. morphology
  19. An apple is named Malus domestica 'Red Delicious'. This name describes a
    a. class c. hybrid
    b. genus d. cultivar
  20. Peppermint is described as Mentha piperita. This mint is a
    a. hybrid c. mutant
    b. cultivar d. genus
  21. A plant that grows the first year, then flowers and dies the second year is called a(n)
    a. semiannual c. annual
    b. diennial d. biennial
  22. Describe the three components of a typical soil.
    a. brown, green, gray c. inorganics, organics, pore space
    b. N, P, K d. rocks, roots, water
  23. The relative proportions of sand, silt and clay in a soil is its
    a. soil unit c. horizon
    b. texture d. profile
  24. 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
  25. When we estimated soil texture by hand, a longer soil ribbon meant there was
    a. not enough water c. more clay in soil
    b. more silt in soil d. too much sand in soil
  26. The three macro plant nutrients in soil are
    a. N, P, K c. water, air, organic
    b. H, C, O d. peat, perlite, vermiculite
  27. Which of these are three mobile soil nutrients?
    a. carbon, hydrogen, oxygen c. nitrogen, phosphorus, potassium
    b. sulfur, iron, nitrogen d. water, organic material, air
  28. Of the macro nutrients the most important for vegetative growth is
    a. nitrogen c. phosphorus
    b. potassium d. none of these
  29. Of the macro nutrients the most important for root and fruit production is
    a. nitrogen c. phosphorus
    b. potassium d. none of these
  30. You notice your ginkgo tree has some leaves that are yellowing between the leaf veins. You suspect it is a mobile nutrient deficiency because the yellow leaves are
    a. new leaves c. yellow not red
    b. scattered randomly d. old leaves
  31. The most effective way to improve soil structure is to add
    a. earthworms c. sand
    b. conditioning chemicals d. organic matter
  32. The pH scale is used to measure a soil's
    a. acidity. c. phosphorus content.
    b. water level. d. pore space.
  33. Most plants grow best with a soil pH of
    a. between 6 and 7 c. less than 6
    b. more than 7 d. 20 to 30%
  34. To balance the acidity of the peat moss we added __________ to our potting soil mix.
    a. vermiculite c. ground limestone
    b. ground perlite d. balanced fertilizer
  35. The fertilizer package reads 10 - 15 - 5. This fertilizer has
    a. 15% potassium c. 15% phosphorus
    b. 15% nitrogen d. none of these
  36. Which plant specimen has a tap root?
  37. Which plant specimen has an alternate leaf pattern?
  38. On the back of your answer sheet draw and label a plant using these NINE terms: leaf, petiole, opposite pattern, axial bud, node, stem, terminal bud, root cap, root hair.
  39. Below describe how you created a microclimate in your dream landscape.