1995 National Floriculture Exam

Name:

Multiple Choice

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

The propagation of geraniums from seed is becoming more popular with growers because

a.	The plants are free of systemic diseases.	c.	Breeding has shortened the time from sowing to blooming to about 4 2 months.
b.	The plants are compact and free flowering.	d.	All of the above.

The cover should be removed very carefully after a bench has been steamed in order to avoid

a.	Being burned by the steam.	c.	Recontaminating the soil.
b.	Puddling the soil.	d.	All of the above.

Rhizoctonia and pythium are fungi which attack:

a.	Buds and flowers of chrysanthemums.	c.	Roots and stems of poinsettias.
b.	Leaves of carnations.	d.	Stems and flowers of snapdragons.

Growth-promoting substances are often applied to the bases of cuttings when propagating plants in order to:

a.	Harden of the cutting.	c.	Induce node development on the stem of the cutting.
b.	Conserve moisture in the cutting.	d.	Speed the development of roots on the cutting.

What is the name of the growth regulator frequently used on petunia crops to control legginess?

a.	Osmocote	c.	B-Nine
b.	Malathion	d.	Benlate

For good germination, seeds of nearly all bedding plants require a propagation medium temperature of:

a.	75 to 85 degrees	c.	65 to 75 degrees
b.	45 to 55 degrees	d.	55 to 65 degrees

When new plants are produced by means of a few cells removed from a stem tip or root, this is referred to as:

a.	Stem tip propagation.	c.	Apicial meristem propagation
b.	Apomixis	d.	Single eye propagation.

When a plant is "flagging", it means that it is:

a.	Severely wilted	c.	Showing signs of nutrient deficiency
b.	Slightly wilted.	d.	Showing wind damage.

To add a cheerful, exuberant quality to any flower bed which of the following flowers should be planted ?

a.	Pink Madness petunias.	c.	Pink Coneflowers.
b.	White Rocket snapdragons.	d.	Blue salvia.

10.

Which of the following is a shade loving flower?

a.	Cosmos	c.	Chrysanthemum
b.	Snapdragon	d.	Impatiens

11.

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

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

12.

Pollination occurs when:

a.	A sperm and egg unite	c.	A pollen grain touches the stigma
b.	Pollen is released from the flower	d.	A pollen grain touches the ovary

13.

If a hue is diluted with gray, the resulting color is called a:

a.	Value	c.	Shade
b.	Tint	d.	Tone

14.

Which of the following is not an annual?

a.	Cosmos	c.	Zinnia
b.	Gas Plant	d.	Marigold

15.

Which of the following is a member of the Dianthus family?

a.	Chrysanthemum	c.	Sedum
b.	Phlox	d.	Sweet Williams

16.

Which of the following are fungus diseases of plants:

a.	Mildew, fusarium, damping off.	c.	Odema, mildew, damping off.
b.	Aster yellows, mildew, botrytis.	d.	Thrips, mildew, fusarium.

17.

The process that a plant goes through when sugars in the plant combine with oxygen to release energy is called:

a.	Photosynthesis	c.	Transpiration
b.	Respiration	d.	Translocation

18.

Like textural appearance of plants, _____________ can be used to create spatial illusions in a perennial garden.

a.	Growth rate of plants.	c.	Shape
b.	Color	d.	Staking

19.

Soil texture refers to:

a.	The arrangement of the soil particles.	c.	The ratio of sand to clay in the soil.
b.	The size of the soil particles.	d.	The amount of humus in the soil.

20.

A speckled leaf appearance with fine silky strands on the lower leaf surface and between leaves suggest the presence of:

a.	Botrytis	c.	Damping-off
b.	Mealy bug	d.	Spider mites

21.

The size and arrangement of the greenhouse, head house and boiler rooms are most often determined by:

a.	The number of buildings to be built.	c.	The location of the greenhouse.
b.	The type of construction used.	d.	The requirements of the crops to be grown.

22.

Which foliage has the heaviest texture?

a.	Asparagus fern	c.	Baker Fern
b.	Salal	d.	Huckleberry

23.

When a black is added to a hue, the resulting color is called a:

a.	Shade	c.	Tone
b.	Hue	d.	Tint

24.

Which foliage plant is a vine?

a.	Ficus benjamina	c.	Peperomia obtusifolia
b.	Cissus rhonlbifolia	d.	Nephrolepis exaltata

25.

Commercial flower crops are sometimes watered to cause leaching.

a.	Watering to spread fertilizer nutrients more evenly over the plant root system.	c.	Watering only to wet the top l/3 of the soil.
b.	Watering to remove excess soluble salts for the soil.	d.	Watering by subsurface methods.

26.

Which foliage would be most appropriate in constructing a boutonniere?

a.	Salal	c.	Baker Fern
b.	Pit	d.	Huckleberry

27.

The correct state at which to put forced azaleas into a lighted storage at 46 degrees Fahrenheit for holding up to two weeks is:

a.	When the first bloom is fully open.	c.	When the flower buds have begun to swell
b.	When color is barely showing in the whole flower cluster.	d.	When the vegetative shoots are l l/2 inches long.

28.

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

a.	Wider	c.	Slightly narrower
b.	Same width	d.	l l/2 times wider.

29.

A ten-week group variety of chrysanthemum means:

a.	They should be ten weeks old when potted.	c.	They bloom ten weeks after the start of short days.
b.	They will bloom ten weeks after sticking the cutting.	d.	Cuttings of this variety being planted should root in ten weeks.

30.

Peat is often mixed with soil for growing plants primarily because it:

a.	Is inexpensive	c.	Has a low pH
b.	Has a good air and water capacity	d.	Absorbs excessible soluble salts in the soil

31.

When transplanting, plant seedlings should be handled by the:

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

32.

Cuttings of potted chrysanthemums are planted at an angle to encourage:

a.	Increased branching	c.	A more rounded plant
b.	Larger blooms	d.	Earlier flowering

33.

Carbon dioxide enrichment is used in commercial greenhouses to:

a.	Lessen the spread of bacterial diseases.	c.	Partially compensate for low light levels
b.	Aid in temperature control	d.	Increase the air supply for the growing plants.

34.

The common name for Zabrina pendulum is:

a.	African Evergreen	c.	Wandering Jew
b.	Boston Ivy	d.	Grape Ivy

35.

The pH on soil test results stands for:

a.	acidity	c.	Potential hydrogen
b.	Alkalinity	d.	Potential oxygen

36.

A friable soil is one that:

a.	Is rich in N, P, and K.	c.	Is high in clay particles
b.	Is loose and of good structure and texture.	d.	Requires humus and fertilizer to be productive.

37.

Baptisia australis (False Indigo) is:

a.	An annual flower	c.	A perennialflouer
b.	A biennial flower	d.	A grandiflora flower

38.

The genus and species for Femleaf Yarrow is:

a.	Acanthus mollis	c.	Companula persicifolia
b.	Achillea filipendulina	d.	Asclepias tuberosa

39.

Which of the following flowers has the highest growth habit?

a.	Feverfew	c.	Delphiniurn
b.	Basket-of-Gold	d.	Coral Bells

40.

To use a flower bed to make the yard of your home seem bigger, you should plant which of the following flowers?

a.	Warm-colored flowers (reds, oranges, yellows)	c.	A combination of warm-and cool-colored flowers.
b.	Cool-colored flowers (blues, purples, lavenders)	d.	All white flowers

41.

A perennial that is tolerant of moist soil is:

a.	Spurge	c.	Sea Pink
b.	Yarrow	d.	Globeflower

42.

Which one of the following perennials produces a fragrant flower?

a.	Petunia	c.	Hosta
b.	Cleome	d.	Bearded Iris

43.

The approximate range of average annual minimum temperature for Climatic Zone 5 is:

a.	-20 to -10 degrees	c.	-30 to -20 degrees
b.	10 to 20 degrees	d.	20 to 30 degrees

44.

Fall blooming perennials should be divided:

a.	In early spring	c.	Mid summer
b.	In late spring	d.	Early Fall

45.

Which of the following insecticides should be used on beetles that are feeding on the flowers of roses and dahials?

a.	Malithion	c.	Round Up
b.	Weed-B-Gon	d.	Funginex

46.

Which of the following flowers is a drought-tolerant flower?

a.	Nasturtium	c.	Four-o'clock
b.	Pansy	d.	Primrose

47.

To increase the bushing of a flowering plant while the plant is young, you should:

a.	Apply a growth retardant.	c.	Pinch the tip of the stem(s) of the plant
b.	Increase the nitrogen in the soil surrounding the plant.	d.	Increase the amount of water the plant receives.

48.

A shade loving border plant is:

a.	Marigold	c.	Dusty Miller
b.	Impatiens	d.	Chrysanthemum

49.

A color scheme in a garden that produces a carnival-like effect is referred to as being:

a.	Momochromatic	c.	Complementary
b.	Analogous	d.	Polychromatic

50.

Large gaps between new leaves of house plants observed when buying plants suggest that:

a.	Heavy doses of fertilizer have been applied to induce rapid growth	c.	The plant is root bound
b.	The plants are infected with aphids	d.	The plant is anernic