1998 National Floriculture Exam

Name:

Multiple Choice

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

A perennial vine producing fragrant yellow flowers all summer is:

a.	Coral vine	c.	Morning glory
b.	Carolina Jessamine	d.	Wisteria

Annuals for shady situations might include:

a.	Sunflower and rose moss	c.	Petunia and verbena
b.	Zinnia and marigolds	d.	Coleus and impatiens

Plants native to regions where summer is warm-to-hot and winter is mild or frost free are:

a.	Hardy annuals	c.	Half-hardy annuals
b.	Tender annuals	d.	Biennials

Silver Thiosulfate (STS):

a.	Is an ethylene antagonist	c.	Promotes bacterial activity
b.	Causes petal abscission	d.	a and b

This growth regulator increases the flower size of geranium, and accelerates flowering in cyclamen.

a.	Auxin	c.	B-Nine
b.	Gibberellic acid	d.	Ethephon

A grouping of closely spaced flowers, net and accessories in a hand-held floral arrangement is called:

a.	Pompon	c.	Hogarthian curve
b.	Corsage	d.	Nosegay

Fungus gnat damage to potted plants is caused by the:

a.	Adult stage	c.	Pupal stage
b.	Larval stage	d.	All of the above

A type of propagation in which the propagule remains attached to the parent plant is termed:

a.	Layering	c.	Root cutting
b.	Stem cutting	d.	Division

An instrument which measures the electrical conductivity of a soil solution is called:

a.	Manometer	c.	Photometer
b.	Tensionmeter	d.	Solubridge

10.

Short, crooked rose peduncles often result from:

a.	Excessive vigor	c.	Calcium deficiency
b.	Botrytis Blight	d.	Excessive soluble salts

11.

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

12.

All of the following are bulbous and tuberous-rooted plants except:

a.	Dahlias	c.	Caladiums
b.	Dutch iris	d.	Snapdragons

13.

A good substitute for sand, this material provides aeration in the root media.

a.	Peat moss	c.	Vermiculite
b.	Perlite	d.	Rock wool

14.

Floral arrangements designed with visual paths along which the eye is led from one point of interest to another are called:

a.	Mass arrangements	c.	Naturalistic arrangements
b.	Abstract arrangements	d.	Line arrangements

15.

Cultivars differ in the time required to reach a salable stage following the start of inductive short days. This time is called the:

a.	DIF	c.	Acclimatization period
b.	Response	d.	Finishing time

16.

Gladiolus corms are typically propogated from:

a.	Rhizomes	c.	Cormels
b.	Bulbs	d.	Cuttings

17.

Cycocel or chlormequat, is commonly used:

a.	Height enhancer	c.	Pinching agent
b.	Height retardant	d.	Growth promoter

18.

This fungus attacks a wide variety of ornamental plants, probably causing more losses than any other single pathogen.

a.	Pythium root rot	c.	Alternaria
b.	Botrytis cinerea	d.	Phytophthora

19.

Common to geraniums, a leaf disorder brought on by an imbalance in water ralations during production is:

a.	Necrosis	c.	Edema
b.	Chlorosis	d.	Blasting

20.

A device used to measure air pressure between two plastic layers in a greenhouse is called a:

a.	Hygrometer	c.	Manometer
b.	Tensionmeter	d.	Barometer

21.

Orchids are distinguished from all other flowers by their:

a.	Rostellum	c.	Zygomorphic flowers
b.	Sepals	d.	a and c

22.

An orchid which grows predominately upward is termed:

a.	Epiphytic	c.	Monopodial
b.	Sympodial	d.	Terrestrial

23.

The most important single aspect of perennial gardening is:

a.	Control of plant height	c.	Determining the gardens' location
b.	Deciding between an informal or formal design	d.	Timing the bloom

24.

The acceleration of flowering by manipulation of environmental conditions is known as:

a.	Pulsing	c.	Leaching
b.	Forcing	d.	After-ripening

25.

Ridge and furrow greenhouses at all latitudes should be oriented:

a.	North to south	c.	To the builders convenience
b.	East to west	d.	Northwest to southeast

26.

These summer-blooming perennials produce dense, bristy balls of blue color:

a.	Delphinium	c.	Bleeding heart
b.	Blue plumbago	d.	Globe thistle

27.

The percentage of the wholesale price added on to the wholesale price to cover overhead and profit, and to arrive at a retail price is termed:

a.	Markup	c.	Mark-on
b.	Sales tax	d.	Value added

28.

The number one foilage production state in acres and wholesale value is:

a.	Texas	c.	California
b.	Hawaii	d.	Florida

29.

These annuals will tolerate periods of damp or cold weather, but may be killed by frost:

a.	Hardy	c.	Biennials
b.	Half-hardy	d.	Tender

30.

The optimum pH for azaleas is:

a.	6.5 to 7.5	c.	4.5 to 5.5
b.	9.0 to 10.0	d.	7.0 to 8.0

31.

An arrangement should be times the height of a tall container or the length of an elongated container.

a.	5 to 6	c.	3 to 4
b.	1/2	d.	1 1/2 to 2

32.

A mum cultivar with a single flower more than four inches in diameter, having all lateral buds removed is called a:

a.	Spray mum	c.	Standard mum
b.	Disbud mum	d.	Miniature mum

33.

The light intensity at which respiration and photosynthesis are balanced is:

a.	Photosynthetically active radiation	c.	Light compensation point
b.	Approximately 1,000 foot candles	d.	All of the above

34.

The florist's chrysanthemum is a:

a.	Composite Inflorescence	c.	Short day plant
b.	Complex Hybrid	d.	All of the above

35.

The growth regulator used most often to control marketable plant heights of potted tulips, potted dahlias and potted lillies is:

a.	A-Rest	c.	Florel
b.	Benlate	d.	Bonzai

36.

Field production of gladiolus is accomplished by using:

a.	Corms	c.	Crowns
b.	Cuttings	d.	Bulbs

37.

Distorted flowers characterized by shorter petals which give the rose a flattened appearance are called:

a.	Flagged	c.	Blind shoots
b.	Bullheads	d.	Deadheads

38.

The genus and species name for the carnation is:

a.	Dianthus caryophyllus	c.	Anemone coronaria
b.	Lathyrus odoratus	d.	Lobularia maritima

39.

Hiemalis Begonia is very responsive to:

a.	High nutrient levels	c.	Temperature
b.	Carbon dioxide levels	d.	b and c

40.

A good example of CAM plant is the:

a.	Poinsettia	c.	Rose
b.	Kalanchoe	d.	Chrysanthemum

41.

Optimum temperature for poinsettia growth is:

a.	60 to 80 degrees F	c.	70 to 90 degrees F
b.	45 to 55 degrees F	d.	80 to 85 degrees F

42.

The most important environmental factor in orchid culture is:

a.	Fertilization	c.	Watering and water quality
b.	Temperature	d.	Light

43.

The cool colors on a typical color 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

44.

A physiological disorder or geraniums caused by high moisture levels in the root media is:

a.	Bacterial light	c.	Oedema
b.	Botrytis blight	d.	Pythium

45.

Plant texture is determined by:

a.	The way the leaf feels to the touch	c.	Plant shape
b.	Foliage density	d.	b and c

46.

A naturally occurring axin produced in apical meristems is:

a.	IBA	c.	IPA
b.	NAA	d.	IAA

47.

A brown foam easily penetrated by delicate floral stems, which aids in the arrangement of silk or dry flowers is:

a.	Silica gel	c.	Sahara
b.	Holdfast	d.	Styrofoam

48.

Costs associated with making an arrangement, decorating a looming plant, or creating wedding flowers are called:

a.	Direct costs	c.	Fixed costs
b.	Indirect costs	d.	Overhead

49.

Pot mums in 6-inch pots should average flowering shoots per pot.

a.	5 to 10	c.	60 to 80
b.	20 to 30	d.	80 to 100

50.

The flowers and leaves of a rose are mottled and streaked with silver, and dusty black droppings have collected. This damage is indicative of:

a.	Fungus gnats	c.	Powdery mildew
b.	Thrips	d.	Scale