1992 National Floriculture Exam

Name:

Multiple Choice

Identify the letter of the choice that best completes the statement or answers the question.

The width of the bow in a corsage should be than (as) the fullest part of the corsage.

a.	Slightly narrower	c.	Wider
b.	Same width	d.	One and one-half wider

Perrennials generally bloom:

a.	Throughout the growing season	c.	During cool periods of the growing season
b.	Two to four weeks during the growing season	d.	During hot periods of the growing season

A houseplant that grows well in full sunlight is:

a.	Hydrangea	c.	Spider plant
b.	Schefflera	d.	Dieffenbachia

A color scheme of flowering annuals that creates a carnival effect in the garden is called:

a.	Complimentary	c.	Monochromatic
b.	Analogous	d.	Polychromatic

The chief value of texture in a floral design is that:

a.	It provides rhythm in an arrangement	c.	It provides visual interest that can be produced through the use of contrast
b.	It provides a focal point in the arrangement	d.	It provides a setting for the arrangement

Which of the following statements is true?

a.	A shade may be produced by adding gray to dilute a hue.	c.	A tint may be produced by adding gray to dilute a hue.
b.	A tone may be produced by adding gray to dilute a hue.	d.	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:

a.	Photoperiod	c.	Moisture
b.	Temperature	d.	Nutrition

A "50 degree greenhouse crop" means the crop:

a.	Is grown at a night temperature of 50 degrees F	c.	Is grown at a constant temperature of 50 degrees F
b.	Is grown at a day temperature of 40 degrees F	d.	Is grown at day/night temperature difference of 50 degrees F

An organism capable of causing a disease is called:

a.	An enzyme	c.	A pathogen
b.	A systemic	d.	An oedema

10.

Which foliage plant is not a vine?

a.	Hedra helix	c.	Ficus benjamina
b.	Peperomia obtusifolia	d.	Nephrolepis exaltata

11.

Which cut flower is likely to turn brown if touched?

a.	Gladiolus	c.	Gardenia
b.	Tulip	d.	Rose

12.

Garden snails and slugs are hermaphroditic.

a.	They cannot be controlled by bacterial diseases	c.	They are male and female in one
b.	They cannot withstand temperatures 20 degrees below 0	d.	They give birth to live young

13.

Pheromone traps attract insects by:

a.	Their color and shape	c.	The brightness of their light
b.	Chemical signals given off by other insects	d.	The aroma of the plant by which the trap is located

14.

A flower garden that brings an exuberant, cheerful quality is dominated by which color of flowers?

a.	White	c.	Red
b.	Yellow	d.	Orange

15.

The labellum is a flower part of the:

a.	Gladiolus	c.	Calendula
b.	Orchid	d.	Rose

16.

"Pinching" refers to the removal of a:

a.	Terminal shoot	c.	Lateral flower buds
b.	Lateral shoots	d.	Terminal flower

17.

Propagation schedules for bedding plants (anywhere in the U.S.) are based on a sales period just after:

a.	Memorial Day	c.	Labor Day
b.	The first frost	d.	The last spring frost

18.

If pink rose flowers develop a distinctly bluish color the probable cause is:

a.	Low temperature	c.	Too much light
b.	Age	d.	High soil pH

19.

Hook wiring is the most appropriate technique for wiring a:

a.	Rose	c.	Gladiolus
b.	Daisy	d.	Sweet Pea

20.

Flower size and quality of chrysanthemum plants can be increased by:

a.	Decreasing the temperature around the plant over night	c.	Increasing and maintaining the CO2 level to 1200 ppm around the plant
b.	Increasing the soil temperature to 85 degrees Fahrenheit	d.	Increasing the daily period to 15 hours

21.

When planning a perennial flower garden, a consideration that is often overlooked by those planning the garden is:

a.	The combination of flower colors	c.	The spread of the mature plants
b.	The temperature tolerance of the flowering plants.	d.	The height of the mature plants

22.

A function of the transpiration process in plants is to:

a.	Move water and nutrients from the roots to the leaves	c.	Absorb oxygen for the manufacture of food in the leaves
b.	Manufacture food in the leaves	d.	Release energy and heat in the plant

23.

Which of the following annual flowering plants is most drought-tolerant?

a.	Ornamental pepper	c.	Pansy
b.	Four o-clock	d.	Coleus

24.

After watering a newly potted plant, the top of the soil should be from the rim of the container.

a.	1/4 to 1/2 inch	c.	1 to 1 1/2 inch
b.	1/2 to 1 inch	d.	2 inches

25.

Easter Lily height is best controlled by:

a.	Watering practices	c.	Temperature manipulation
b.	Growth retardant applications	d.	Photoperiod manipulation

26.

A temperature of 16 C is equal to F.

a.	16	c.	80
b.	35	d.	60

27.

An important characteristic that distinguishes mites from insects is that mites have:

a.	Small wings	c.	No melding stages
b.	Eight legs	d.	No egg-laying stage

28.

Gummosis is a term that describes:

a.	The sticky surface on plant leaves and stems caused by an aphid infestation	c.	Stunted plant growth
b.	Oozing of plant sap	d.	A change in the color of the plant vegetation

29.

Phylloclades are:

a.	Jointed leaves of stemless plants	c.	A group of closely related african violets
b.	Foliage plants that are incapable of flowering	d.	Jointed stems of leafless plants

30.

If a customer selects an item marked $1,700 which is a "Special" marked 10 percent off, and there is a 5 percent sales tax, the customer should be charged:

a.	$16.15	c.	$16.07
b.	$15.30	d.	$17.85

31.

Irregular or rounded holes in opening flowers and leaf buds is a sign of ________ damage.

a.	Flatheaded borer	c.	Chinch bug
b.	Cankerworm	d.	Budworm

32.

Pyrethrms are derived from:

a.	The roots of members of the bean family	c.	The flowers of the pyrethrm plant
b.	The roots of pyrethrm plants	d.	The leaves of the pyrethrm plant

33.

Epiphydic orchids use branches of trees as:

a.	A source of food	c.	A moisture source
b.	A place to live	d.	A place to avoid sunlight

34.

In an arrangement, heavy focal materials should be:

a.	Disbursed throughout the arrangement	c.	The dominate color in the arrangement
b.	Placed at the outer edges of the arrangement	d.	Placed at the bottom of the arrangement

35.

To insure blue color in hydrangeas, you would:

a.	Fertilize with aluminum sulfate	c.	Expose the crop to short days and cool nights
b.	Raise the pH level in the soil	d.	Fertilize with magnesium sulfate

36.

Sugars are manufactured in the of plants

a.	Leaves	c.	Roots
b.	Stems	d.	Flowers

37.

If large black areas develop overnight in the leaves of Cattleya orchids, the probable cause is exposure to a heavy concentrati

a.	Carbon dioxide	c.	Soluble salts
b.	Granular herbicide	d.	Light

38.

When the pollen grain adheres to the stima, which term describes what has happened?

a.	Pollination	c.	Hybridization
b.	Fertilization	d.	Scarification

39.

Pesticides that dissolve into the plant and move up the sap are used to control:

a.	Pests	c.	Fungus growth
b.	Viruses	d.	Growth rate of the plant

40.

A perennial flower that will provide a vertical accent to a flower bed is:

a.	Gaillardia	c.	Baby's Breath
b.	Rose Mallow	d.	Lupine

41.

The appearance of frothy foam on a flower stem indicates the presence of:

a.	Spittlebugs	c.	Stink Bugs
b.	Sowbugs	d.	Aphids

42.

The pH range which the major plant nutrients are available to most houseplants is:

a.	6.0 to 6.5	c.	7.0 to 7.5
b.	6.5 to 7.0	d.	5.5 to 6.0

43.

An effective method of watering potted plants in a home is by:

a.	Setting the pot in a pan of water daily	c.	Using a wick system
b.	Flooding the pot every day	d.	Using a mist system

44.

Uneven numbers of flowers should be used in a design when the total number is to be less than:

a.	20	c.	8
b.	12	d.	24

45.

The following nutrient requirements must be satisfied in order to get pink flowers on hydrangeas:

a.	pH 7.0, abundant strontium, low N and P, high K	c.	pH 6.5, no aluminum, high N and P, low K
b.	pH 5.5, abundant aluminum, low N and P, high K	d.	pH 6.5, abundant aluminum, high N and P, low K

46.

Air layered plants are removed from the parent plant:

a.	When the roots are four to six inches long	c.	As soon as the roots are visible
b.	When the plants are sold	d.	Immediately after layering

47.

Which of the following is a bulbous plant?

a.	Gladiolus	c.	Canna
b.	Chrysanthemum	d.	Alstromeria

48.

To cause plants in the greenhouse to develop and grow more slowly, one should:

a.	Decrease the greenhouse temperature	c.	Decrease the intensity of light around the crops
b.	Increase the amount of peat in the soil in which the crops grow.	d.	Fumigate the greenhouse once a week

49.

Sansevieria trifaciata is the technical name for:

a.	Snake plant	c.	Bird-of-Paradise
b.	Golden pothos	d.	Lemon grass

50.

The recommended optimum pH for annual flowers is between:

a.	5.0 and 5.5	c.	5.5 and 6.0
b.	6.0 and 6.5	d.	6.5 and 7.0