1992 National Floriculture CDE

The width of the bow in a corsage should be than (as) the fullest part of the corsage.
1. Slightly narrower
2. Same width
3. Wider
4. One and one-half wider
Perennials generally bloom:
1. Throughout the growing season
2. Two to four weeks during the growing season
3. During cool periods of the growing season
4. During hot periods of the growing season
A houseplant that grows well in full sunlight is:
1. Hydrangea
2. Schefflera
3. Spider plant
4. Dieffenbachia
A color scheme of flowering annuals that creates a carnival effect in the garden is called:
1. Complimentary
2. Analogous
3. Monochromatic
4. Polychromatic
The chief value of texture in a floral design is that:
1. It provides rhythm in an arrangement
2. It provides a focal point in the arrangement
3. It provides visual interest that can be produced through the use of contrast
4. It provides a setting for the arrangement
Which of the following statements is true?
1. A shade may be produced by adding gray to dilute a hue
2. A tone may be produced by adding gray to dilute a hue
3. A tint may be produced by adding gray to dilute a hue
4. Violet, blue, and green evoke a feeling of warmth
Although chrysanthemums flower naturally in the fall months, they can be flowered at any time of the year in greenhouses through the appropriate control of:
1. Photoperiod
2. Temperature
3. Moisture
4. Nutrition
A "50 degree greenhouse crop" means the crop:
1. Is grown at a night temperature of 50 degrees F
2. Is grown at a day temperature of 40 degrees F
3. Is grown at a constant temperature of 50 degrees F
4. Is grown at day/night temperature difference of 50 degrees F
An organism capable of causing a disease is called:
1. An enzyme
2. A systemic
3. A pathogen
4. An oedema
Which plant is not a vine?
1. Hedra helix
2. Grape Ivy
3. Rubber Plant
4. Zebrina Pendula
Which cut flower is likely to turn brown if touched?
1. Gladiolus
2. Tulip
3. Gardenia
4. Rose
Garden snails and slugs are hermaphroditic. That means:
1. They cannot be controlled by bacterial diseases
2. They cannot withstand temperatures 20 degrees below 0
3. They are male and female in one
4. They give birth to live young
Pheromone traps attract insects by:
1. Their color and shape
2. Chemical signals given off by other insects
3. The brightness of their light
4. The aroma of the plant by which the trap is located
The least common color of marigolds is
1. White
2. Yellow
3. Red
4. Orange
The labellum is a flower part of the:
1. Gladiolus
2. Orchid
3. Calendula
4. Rose
"Pinching" refers to the removal of a:
1. Terminal shoot
2. Lateral shoots
3. Lateral flower buds
4. Terminal flower
Propagation schedules for bedding plants (anywhere in the U.S.) are based on a sales period just after:
1. Memorial Day
2. The first frost
3. Labor Day
4. The last spring frost
If pink rose flowers develop a distinctly bluish color the probable cause is:
1. Low temperature
2. Age
3. Too much light
4. High soil pH
Hook wiring is the most appropriate technique for wiring a:
1. Rose
2. Daisy
3. Gladiolus
4. Sweet Pea
Flower size and quality of chrysanthemum plants can be increased by:
1. Decreasing the temperature around the plant over night
2. Increasing the soil temperature to 85 degrees Fahrenheit
3. Increasing and maintaining the CO2 level to 1200 ppm around the plant
4. Increasing the daily period to 15 hours
When planning a perennial flower garden, a consideration that is often overlooked by those planning the garden is:
1. The combination of flower colors
2. The temperature tolerance of the flowering plants
3. The spread of the mature plants
4. The height of the mature plants
A function of the transpiration process in plants is to:
1. Move water and nutrients from the roots to the leaves
2. Manufacture food in the leaves
3. Absorb oxygen for the manufacture of food in the leaves
4. Release energy and heat in the plant
Which of the following plants is most cold tolerant?
1. Ornamental pepper
2. Peperomia
3. Pansy
4. Coleus
After watering a newly potted plant, the top of the soil should be from the rim of the container.
1. 1/4 to 1/2 inch
2. 1/2 to 1 inch
3. 1 to 1 1/2 inch
4. 2 inches
Easter Lily height is best controlled by:
1. Watering practices
2. Growth retardant applications
3. Temperature manipulation
4. Photoperiod manipulation
A temperature of 16 C is equal to_________ F.
1. 16
2. 35
3. 80
4. 60
An important characteristic that distinguishes mites from insects is that mites have:
1. Small wings
2. Eight legs
3. No melding stages
4. No egg-laying stage
Gummosis is a term that describes:
1. The sticky surface on plant leaves and stems caused by an aphid infestation
2. Oozing of plant sap
3. Stunted plant growth
4. A change in the color of the plant vegetation
Phylloclades are:
1. Jointed leaves of stemless plants
2. Foliage plants that are incapable of flowering
3. A group of closely related african violets
4. Jointed stems of leafless plants
If a customer selects an item marked $17.00 which is a "Special" marked 10 percent off, and there is a 5 percent sales tax, the customer should be charged:
1. $16.15
2. $15.30
3. $16.07
4. $17.85
Irregular or rounded holes in opening flowers and leaf buds is a sign of ________ damage.
1. Flatheaded borer
2. Cankerworm
3. Chinch bug
4. Budworm
Pyrethrms are derived from:
1. The roots of members of the bean family
2. The roots of pyrethrm plants
3. The flowers of the pyrethrm plant
4. The leaves of the pyrethrm plant
Epiphydic orchids live in:
1. Dry soils
2. Rocky area
3. Swamps
4. Trees
In an arrangement, heavy focal materials should be:
1. Disbursed throughout the arrangement
2. Placed at the outer edges of the arrangement
3. The dominate color in the arrangement
4. Placed at the bottom of the arrangement
To insure blue color in hydrangeas, you would:
1. Fertilize with aluminum sulfate
2. Raise the pH level in the soil
3. Expose the crop to short days and cool nights
4. Fertilize with magnesium sulfate
Sugars are manufactured in the_________ of plants.
1. Leaves
2. Stems
3. Roots
4. Flowers
A Cattleya orchid is a _______________ type of orchid.
1. Terresterial
2. Ortho
3. Juvenile
4. Epiphytic
When the pollen grain adheres to the stima, which term describes what has happened?
1. Pollination
2. Fertilization
3. Hybridization
4. Scarification
Pesticides that dissolve into the plant and move up the sap are used to control:
1. Pests
2. Viruses
3. Fungus growth
4. Growth rate of the plant
A perennial flower that will provide a vertical accent to a flower bed is:
1. Gaillardia
2. Rose Mallow
3. Baby's Breath
4. Lupine
The appearance of frothy foam on a flower stem indicates the presence of:
1. Spittlebugs
2. Sowbugs
3. Stink Bugs
4. Aphids
The pH range which the major plant nutrients are available to most houseplants is:
1. 6.0 to 6.5
2. 6.5 to 7.0
3. 7.0 to 7.5
4. 5.5 to 6.0
An effective method of watering potted plants in a home is by:
1. Setting the pot in a pan of water daily
2. Flooding the pot every day
3. Using a wick system
4. Using a mist system
Uneven numbers of flowers should be used in a design when the total number is to be less than:
1. 20
2. 12
3. 8
4. 24
The following nutrient requirements must be satisfied in order to get pink flowers on hydrangeas:
1. pH 7.0, abundant strontium, low N and P, high K
2. pH 5.5, abundant aluminum, low N and P, high K
3. pH 6.5, no aluminum, high N and P, low K
4. pH 6.5, abundant aluminum, high N and P, low K
Air layered plants are removed from the parent plant:
1. When the roots are six inches long
2. When the plants are sold
3. As soon as the roots are established
4. Immediately after layering
Which of the following is a bulbous plant?
1. Gladiolus
2. Chrysanthemum
3. Canna
4. Alstromeria
To cause plants in the greenhouse to develop and grow more slowly, one should:
1. Decrease the greenhouse temperature
2. Increase the amount of peat in the soil in which the crops grow
3. Decrease the intensity of light around the crops
4. Fumigate the greenhouse once a week
Sansevieria trifaciata is the technical name for:
1. Snake plant
2. Golden pothos
3. Bird-of-Paradise
4. Lemon grass
The recommended optimum pH for annual flowers is between:
1. 5.0 and 5.5
2. 6.0 and 6.5
3. 5.5 and 6.0
4. 6.5 and 7.0

1992 National Floriculture CDE

General Knowledge Examination