Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
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| 1. | The
major auxin produced in plants is: a. | Indole-3-butyric acid (IBA) | c. | Indole-3-acetic acid (IAA) | b. | Naphthalene
acetic acid (NAA) | d. |
Ethylene
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| 2. | The
genus and species name for carnations is: a. | Hyacinths orientalis | c. | Anemone coronaria | b. | Dianthus
caryophyllus | d. | Euphorbia
pulcherriria | | | | |
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| 3. | A hue
with white added is termed a: a. | Tint | c. | Chroma | b. | Tone | d. | Accent | | | | |
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| 4. | Light
energy, carbon dioxide and water enter into the process of photosynthesis through
which: a. | Respiration results | c. | Chlorophyll is
formed | b. | Carbohydrates are formed | d. | Amino acids are formed | | | | |
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| 5. | The
most important pest of greenhouse roses is: a. | The
aphid | c. | The two-spotted
spider mite | b. | Thrips | d. | The greenhouse whitefly | | | | |
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| 6. | What
is the name of the growth regulator often used on poinsettia crops to control
height? a. | Diazinon | c. | Cytokinin | b. | Osmocote | d. | Cycocel | | | | |
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| 7. | Optimum temperature for poinsettia growth is: a. | 70° to
90°F | c. | 50° to
60°F | b. | 60° to 80°F | d. | 45° to 55°F | | | | |
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| 8. | The
main propagation method of tuberous begonias is: a. | Tubers | c. | Bulbs | b. | Cuttings | d. | Seed propagation | | | | |
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| 9. | Fungus gnat damage to potted plants is caused by the: a. | Adult
stage | c. | Pupal
stage | b. | Larval stage | d. | All of the above | | | | |
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| 10. | The
most important environmental factor regulating flower initiation in bulbous species
is: a. | Light | c. | Moisture | b. | Temperature | d. | Ventilation | | | | |
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| 11. | The
cool colors on a typical wheel consist of: a. | Red, red-orange, orange,
yellow-orange | c. | Green,
blue-green, blue, blue-violet, violet | b. | Yellow-green, yellow,
yellow-orange | d. | Red-violet, red,
violet, red-orange | | | | |
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| 12. | Pasteurization of root media at 180°F for 30 minutes would: a. | Kill most plant
viruses | c. | Kill most
pathogenic fungi | b. | Kill most weed seed | d. | All of the above | | | | |
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| 13. | Floral preservatives function to: a. | Provide sugar | c. | Acidify the solution | b. | Supply a
bactericide | d. | All of the
above | | | | |
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| 14. | A
major problem in standard carnation production resulting in asymmetrical flowers is: a. | Improper
fertilization | c. | Calyx
splitting | b. | High-density spacing | d. | Lack of pinching | | | | |
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| 15. | The
most common summer cooling system in greenhouses is: a. | Package
evaporative coolers | c. | Fog evaporative
cooling | b. | Fan-tube cooling system | d. | Fan-and-pad evaporative harmony | | | | |
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| 16. | The
use of tints, tones, and shades of the same hue is termed: a. | Split
complementary | c. | Analogous
harmony | b. | Monochromatic harmony | d. | Direct complementary | | | | |
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| 17. | When
grown at a minimum temperature of 60°F for a year-round flower production, hybrid chrysanthemums
are: a. | Long-day
plants | c. | Inhibited from
flowering | b. | Day-neutral plants | d. | Short-day plants | | | | |
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| 18. | The
florists’ gloxinia and African violet are members of which plant family? a. | Legume | c. | Composite | b. | Gesneriaceae | d. | Caryophyllaceae | | | | |
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| 19. | An
informal garden design: a. | Contains bordered plantings | c. | Imitates nature | b. | Is
symmetrical | d. | Contains many
straight lines | | | | |
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| 20. | The
soil pH level primarily controls: a. | Soil temperature | c. | Moisture absorption by roots | b. | Activity of
soil-borne diseases | d. | Availability of essential plant
nutrients | | | | |
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| 21. | An
ethylene test is routinely used to separate shattering from non-shattering cultivars
of: a. | Poinsettias | c. | Azaleas | b. | Roses | d. | Snapdragons | | | | |
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| 22. | For
roses, as temperature is increased, petal number and flower bud size: a. | Decreases | c. | Is
unchanged | b. | Increases rapidly | d. | Increases slowly | | | | |
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| 23. | As a
general rule, greenhouse crops should be watered: a. | Using a well drained media | c. | Just prior to moisture stress | b. | Thoroughly each
time | d. | All of the
above | | | | |
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| 24. | To
preserve desired characteristics of rose cultivars, their numbers must be increased to vegetative
methods, primarily: a. | Layering | c. | In vitro culture | b. | Budding | d. | Cutting | | | | |
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| 25. | A
perennial vine producing fragrant yellow flowers all summer is: a. | Coral
vine | c. | Morning
glory | b. | Carolina Jessamine | d. | Wisteria | | | | |
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| 26. | The
most serious disease of pests of orchids are the _________, being difficult to detect and having no
reliable control measures. a. | Bacteria | c. | Fungi | b. | Nematodes | d. | Viruses | | | | |
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| 27. | The
removal of lateral flower buds from stems, such as carnations and chrysanthemums, is
called: a. | Soft
pinch | c. | Hard
pinch | b. | Deadheading | d. | Disbudding | | | | |
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| 28. | An
ornamental receptacle for holding plants or flowers is termed a: a. | Dish
garden | c. | Jardinière | b. | Nosegay | d. | Manzanita | | | | |
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| 29. | An
orchid having a horizontal stem from which numerous shoots arise is called: a. | Monopodial | c. | Terrestrial | b. | Epiphytic | d. | Sympodial | | | | |
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| 30. | The
actual and apparent size relationship of the components of an arrangement is called:
a. | Harmony | c. | Scale | b. | Rhythm | d. | Balance | | | | |
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| 31. | A
component of greenhouse root media consisting of siliceous volcanic rock, crushed and heated to
1800°F is: a. | Vermiculite | c. | Calcined clay | b. | Rockwool | d. | Perlite | | | | |
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| 32. | Irregularly shaped holes with smooth edges appear in Hosta leaves. Some leaves
are missing. The plants should be treated for: a. | Aphids | c. | Slugs and
snails | b. | Leaf cutter bees | d. | Leafhoppers | | | | |
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| 33. | Cut
branches of evergreen 20 to 30 inches long are called: a. | Tips | c. | Boughs | b. | Bales | d. | Bunches | | | | |
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| 34. | These
insects are identified by the cottony material found on stems and along leaf veins: a. | Aphids | c. | Spider mites | b. | Mealybugs | d. | Whiteflies | | | | |
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| 35. | Technique used to make a small cluster of filler flowers for use in corsages and
wedding bouquets: a. | Hook
method | c. | Splinting
method | b. | Clutch method | d. | Pierce method | | | | |
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| 36. | Your
Dieffenbachia’s new growth is weak and spindly with larges gaps between the leave. The
problem is: a. | Salt
damage | c. |
Botrytis | b. | Nitrogen defiency | d. | Lack of light | | | | |
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| 37. | This
widespread fungal disease, often referred to as gray mold, attacks weak flowers and foliage, and is
found on most dead plant tissue: a. | Botrytis cinerea | c. | Powdery mildew | b. | Bacteria
wilt | d. | Damping
off | | | | |
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| 38. | Excessively short stems in tulips planted outdoors are due to: a. | Lack of
sunlight | c. | Excessive
moisture | b. | Warm spring temperatures and lack of winter
cooling | d. | Magnesium and
calcium deficiencies | | | | |
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| 39. | A hue
plus gray which is duller than the pure hue, and produces a soft, soothing effect is a:
a. | Split
complementary | c. | Shade | b. | Tone | d. | Tint | | | | |
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| 40. | Specialty cut flowers are defined as: a. | Cut flowers
other than roses | c. | Cut flowers
other than carnations, chrysanthemums, and gladiolas | b. | Cut flowers
other than roses, carnations, and chrysanthemums | d. | Cut flowers other than those grown in the
field | | | | |
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| 41. | The
majority of florist business are conducted in one location and annual gross sales are generally
under: a. | $2,500,000.00 | c. | $25,000.00 | b. | $250,000.00 | d. | $2,500.00 | | | | |
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| 42. | Choosing the right heating system for a particular greenhouse depends on all but one
of the following variables. Identify the one that is not acceptable: a. | Climate | c. | Size of
greenhouse | b. | Type of containers | d. | Cost and availability | | | | |
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| 43. | A
physiological disorder of geraniums caused by high moisture levels in the root media
is: a. | Bacterial
blight | c. | Oedema | b. | Botrytis blight | d. | Pythium | | | | |
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| 44. | Upper
leaves which show interveinal chlorosis probably suffer from: a. | Lack of
water | c. | An iron
deficiency | b. | A sulfur deficiency | d. | A nitrogen deficiency | | | | |
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| 45. | There
is an abbreviation for the mathematical difference between the day temperature and the night
temperature. Identify that abbreviation: a. | DTNT | c. | AM-PM | b. | DT/NT | d. | DIF | | | | |
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| 46. | Rooted cuttings of carnations are planted very shallow and are irrigated by ooze tubes
or a similar system. The primary reason for this type of watering is to: a. | Control
costs | c. | Allow the
injection of iron | b. | Not wet foliage | d. | Save time and equipment | | | | |
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| 47. | The
greatest control over the cooling phase of Easter lily production is provided by: a. | Controlled
temperature forcing | c. | Natural
cooling | b. | Commercial care cooling | d. | Fan and pad cooling | | | | |
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| 48. | In
order to create successful arrangements, one must understand the range of acceptable color
combinations called color schemes. One of the following is not among this frequently used color
schemes: a. | Monochromatic | c. | Triad | b. | Analogous | d. | Quadraplex | | | | |
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| 49. | Color
is important in helping attain most of the principles of design. One of the following is not
among the guidelines commonly followed in floral arranging: a. | Repeat colors in
a design | c. | Never allow one
color to dominate | b. | Use darker colored flowers in deeper and lower in
arrangement | d. | Don’t use
too many different colors | | | | |
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| 50. | The
most important single aspect of perennial gardening is: a. | Control of plant
height | c. | Determining the
gardens’ locations | b. | Deciding between an informal or formal
design | d. | Timing the
bloom | | | | |
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