What percentage of the floriculture crops grown in the United States are produced in Missouri?
Less than 1%
The number one contain-grown flowering plant produced in Missouri is...
Poinsettia
Which of the following is not true of a wholesale greenhouse operation?
It may sell to the general public
The proper orientation for greenhouses north of the 38th parallel is..
Ends facing east and west
Which of the following is not a consideration when purchasing land for a greenhouse?
Previous cropping history
What is the most important factor to be considered when purchasing a greenhouse covering material?
Light transmission
Exolite is one brand name available for what type of greenhouse glazing material?
Acrylic
Which of the following is not a consideration when choosing a greenhouse framing material?
Ability to accept paint
The three methods used to ventilate a greenhouse are ____.
Shading, roof and side vents, and forced-air systems
Which of the following greenhouse floor materials would be easiest to keep sanitized?
Concrete
Unit heaters that use combustible fuels...
must be supplied with fresh air
A thermal blanket or "heat sheet" operates on the principle of ____.
Reducing the amount of greenhouse space to be heated
Which of the following is an environmental factor normally monitored by greenhouse owners?
Temperature
One purpose of ventilation is to decrease ____ in the greenhouse.
Relative humidity
Which of the following is not characteristic of monocots?
Pith in center of stem
Which of the following is not a part of the embryo of a seed?
Endosperm
Where in a plant can cambium meristem tissue be found?
In stems
An example of a plant with clinging aerial air roots would be...
English Ivy
Horizontal, underground stems that form roots on their lower surface are known as..
Rhizomes
Which of the following is not a modified lead?
Plumule
Leaves with tooth-like projections along their margins are said to be...
Dentate
A flower would be considered imperfect if it lacked which of the following structures?
Pistil
What is used to identify variations of species?
Cultivar
The tendency of plants to bend or grow toward light is known as...
Photoperiodism
Which of the following is not a photoperiodic response in plants.
1. Flowering
2. Tuber Formation
3. Bract Coloration
4. None of the above
None of the above
Which of the following is the correct chemical equation for the process of photosynthesis?
6CO2 + 6H2O ~ C6H12O6 +6O2
Which of the following identifies variations withing species?
Cultivar
Which of the following is not an air pollutant that can detrimental to plant growth?
Argon
Which of the following is not an advantage (benefit) of soilless growing medium?
Does not require pasteurization
Which of the following would add the greatest amount of porosity (drainage) to a growing medium?
Perlite
Interveinal chlorosis of the older, lower leaves of a plant best describes a deficiency of which of the following essential mineral elements?
Magnesium
Which of the following is an essential micronutrient?
Zinc
Which of the following is not classified as an essential secondary macroelement?
Phosphorus
If plants are being fed at the rate of 300 ppm nitrogen from a fertilizer with the analysis of 20-10-10, how much potassium (as K20) is being fed at the same time?
1. 300
2. 200
3. 10
4. None of the above
None of the above
Which of the following is a mineral component of a soilless potting medium?
Rock wool
Subjecting seeds to cool, moist conditions to promote germination is known as?
Stratification
In which of the following irrigation methods would water be recycled?
Ebb and flood
The four stages of seed germination in the order they naturally occur are...
Water absorption; enzymatic breakdown; production of new cells; emergence of seedling
Which of the following is not a type of grafting?
Serpentine
Which of the following type of mouth part does a thrips possess?
Rasping-lapping
Which of the following best describes symptoms caused by mites?
Streaking and browning flower petals
Which of the following organisms causes the seedling disease commonly known as damping off?
Rhizoctonia
Which of the following is not a pest control method use in an IPM system?
Legal
Which of the following types of pesticide would be used to control slugs and snails?
Molluscicide
The most important consideration when using pesticides in the greenhouse is to...
Always read and follow label directions
Which of the following information on a pesticide label describes the user's body parts that must be protected?
Routes of entry
Below is a list of four pesticides along with their oral LD50 ratings. Which is the most toxic?
1.Judo (2000)
2. Sevin (225)
3. Orthene (800)
4. M-pede (5000)
Sevin (225)
Which of the following is classified as a fixed cost in greenhouse production?
Seeds and plants
How many square feet of bench spaces does a 10 x 20 inch bedding plant tray occupy?
1.39
If labor costs $12.00 per hour and a worker can transplant 20 trays filled with 804 cell packs per hour, how much transplanting labor in involved with each cell pack?
0.075
Which of the following is a legal consideration in greenhouse planning?
1. Building codes
2. availability of sunlight
3. soil drainage
4. competition
Building codes
How much profit would a shop obtain from an arrangement priced at $13.50 if the 3:1 markup pricing method was used?
9
Which of the following is the formula for the solution used to glycernize foilage?
One part glycerin to two parts water
Which of the following is true for the vacuole of a plant's cell?
It stores water, dissolved minerals and other materials
Which of the following is an essential macronutrient?
Sulfur
Wounding the stem behind the terminal tip and burying the wounded stem is termed ____.
tip layering
Which of the following irrigation systems would most likely add to foliage disease problems?
Capillary mat watering
Supposed you wish to apply two pounds of potassium expressed as K20 to a greenhouse bed used for cut flower production. If you plan to use 20-20-20 fertilizer, how much should you apply?
10 pounds
Which of the following represents typical symptoms caused by a virus?
Mottled leaves with "quilted" (mossaic) appearance
In which of the following parts of a lead are stomata found?
Epidermis
Which of the following materials is frequently used to preserve foliage?
Glycerin
Three basic elements of design are...
Line, form, and texture
Which of the following rules of floral design is false?
Keep small flowers toward the bottom and large flowers toward the top
Which of the following is not a common fabric used in the manufacture of ribbon for floristry?
Linen
Which of the following materials normally is used to hold dry floral foam in the container?
SUre stik
Leaves with tooth-like projections along their margins are said to be...
Dentate
Which of the following popular potted gift plants cannot be re-bloomed?
Fairy Primrose
Roots that penetrate deep into the soil and are excellent for anchorage are known as...
Tap roots
Which of the following is not a part of the embryo of a seed?
endosperm
Where in a plant can apical meristem tissue be found?
At the tips of shoots and at the tip of the roots
Which of the following serves as food source for the embryo of a seed?
Endosperm
Introducing cool air into the greenhouse and warming it without the addition of water vapor would ____ the relative humidity of the greenhouse?
Lower
Which of the following fuel options is the least cost effective for a large, commercial greenhouse?
Electricity
Which of the following is not a way by which heat is lost from a greenhouse structure?
Consolidation
Unit heaters use ____ and release ____ in process of combusting fuel.
carbon dioxide; oxygen