Upgrade to remove ads
Only $35.99/year

2016 National FFA Floriculture General Knowledge Test

Terms in this set (50)

DIF, used for height management of crops, is the difference between the daytime temperature and ______________________
A) temperature requirement
B) morning temperature
C) nighttime temperature
D) none of the above
Nighttime temperature
In commercial greenhouses, which of the following methods are commonly used as a way to regulate plant growth without using chemicals?
A) crop timing
B) water stress
C) container size
D) all of the above
all of the above
Agrobaccerium tumefaciens is a pathogen that is commonly known as ________________
A) crown gall
B) flower distortion
C) clorotic mottle
D) none of the above
crown gall
The recommended pH level for greenhouse crops in soilless medium is _________________
A) 3.0-3.5
B) 5.6-6.2
C) 4.0-4.3
D) all of the above
5.6-6.2
The virtual visual path that directs eye movement through a composition is ___________
A) pattern
B) line
C) form
D) none of the above
line
Orange, green and violet are _____________ colors
A) primary
B) secondary
C) intermediate
D) tertiary
secondary
The fundamental guidelines to aesthetic design that governs the organization of the elements and materials in accordance with the laws of nature are known as the ________________.
A) Elements of Design
B) Transitions of Design
C) Principles of Design
D) none of the above
Principles of Design
Which of the following is NOT a plant hormone that can be used as a plant growth regulator?
A) ethylene
B) anthocyanin
C) abscisic acid
D) gibberellin
anthocyanin
A 28 guager florists wire is ___________ than an 18 guage wire.
A) thicker
B) thinner
C) longer
D) shorter
thinner
The LD50 of a pesticide indicates
A) the amount of the pesticide required to kill half of a test population of the test
subject
B) the time before re-entry into a chemically treated area
C) the amount of chemical needed for effective pest control
D) none of the above
The amount of the pesticide required to kill half of a test population of the test
subject
The planned area within a floral design, which is devoid of flowers, foliage or other objects, but is still integral to the design is known as ____________
A) the focal area
B) positive space
C) negative space
D) all of the above
negative space
Pesticide toxicity is measured in LD50 or LC50 numbers. Which of the following LD50 numbers for pesticides most toxic?
A) 295 mg/kg
B) 1217 mg/kg
C) 34 mg/kg
D) 4,237 mg/kg
34 mg/kg
The placement of materials at different levels within and around a floral arrangement helps to establish ________________
A) pattern
B) form
C) depth
D) balance
depth
What mat irrigation, water moves _____________ from the mat into the root substrate in the pot to maintain constant moisture
A) zero-leaching
B) capillary action
C) xeri-action
D) overhead
capillary action
The cost of the plant materials (i.e. cost of seeds, cuttings, bulbs, or other plant propagules) would be examples of __________ costs on financial planning sheet
A) wholesale
B) overhead
C) fixed
D) direct
direct
Achromatic, monochromatic, analogous and complementary are a few of the classically recognized ______________
A) hues
B) color values
C) color harmonies
D) none of the above
color harmonies
When propagating asexually, roses can be reproduced from _____________
A) vegetative cuttings
B) budded plants
C) grafted plants
D) all of the above
all of the above
Soil pH is based on the concentration of ___________ ions in the soil
A) calcium
B) hydrogen
C) oxygen
D) sulfur
hydrogen
What describes edema in geraniums?
A) water soaked blisters generally on the underside of the leaf
B) swelling of the stem of the plant
C) no visual effects to the foliage of the plant
D) root disorder causing the demise of the plant
water soaked blisters generally on the underside of the leaf
Which of the following is NOT a part of the pistil of the plant?
A) style
B) ovary
C) stigma
D) filament
filament
The tiny pores in the epidermis of a leaf through which gas enters and escapes are _____________
A) cuticle
B) petiole
C) stipule
D) stomata
stomata
The ____________ phase begins when a plant's seed germinates and grows, producing leaves, stems, and roots
A) annual
B) dormancy
C) reproductive
D) vegetative
vegetative
the process of a plant losing water through the leaves in the form of water vapor is referred to as __________________
A) dehydration
B) photosynthesis
C) respiration
D) transpiration
transpiration
The waxy coating, called the _______________, serves to prevent excessive water loss from the leaf tissues.
A) axil
B) blade
C) cuticle
D) vein
cuticle
Lime furnishes ________________, one of the most important of the marco food elements
A) potassium
B) phosphorus
C) sulfur
D) calcium
calcium
Auxin is responsible for apical dominance in plants. Auxin is produced in three places in the plant located in the
A) main stem, older leaves, and flowers
B) flower buds, leaf buds, and fruit
C) leaf petiole, shoot tips, and main older roots
D) shoot tips, young leaf blades, and root tips
shoot tips, young leaf blades, and root tips
A complete fertilizer is recommended for a greenhouse crop. Which fertilizer analysis below is NOT a complete fertilizer?
A) 16-4-8
B) 10-0-10
C) 5-10-10
D) 17-17-17
10-0-10
Mass flowers include all of the following except:
A) chrysanthemums
B) baby's breath
C) carnations
D) Zinnia
baby's breath
Two hues directly opposite each other on the color wheel are ___________ colors.
A) diadic
B) monchramatic
C) polychromatic
D) complementary
complementary
Broken, implied, and continuous are all part of which element of design?
A) space
B) line
C) color
D) texture
line
Light inside a greenhouse is measured in __________________
A) solar energy
B) foot light
C) foot candles
D) solar candles
foot candles
Poinsettas require a _________________ to produce colored bracts.
A) short day photoperiod
B) long day photoperiod
C) cool day temperature regime
D) cool night temperature regime
short day photoperiod
Thrips can be effectively managed in the greenhouse by using:
A) a biological control such as a predator 'swirski mite'
B) a chemical control such as the insecticide spinosad
C) screenings over vents and other openings
D) all of the above
all of the above
An insect _______________ generally does not kill insects, but instead drives them away before they attack the plant
A) attractant
B) pheromone
C) repellent
D) sterilant
repellent
To help identify plants, flower forms are grouped as to their position or arrangement on a stem. The flower position or arrangement is known as __________
A) flower inflorescence
C) imperfect flower
B) perfect flower
D) flower calyx
flower inflorescence
After pollination and fertilization, the flower petals begin to drop and the ovary and
other surrounding parts enlarge and develop into a _______________
A) fruit
C) new flower
B) leaf
D) raceme
fruit
Which of the following diseases does NOT affect the root system of plants?
A) Botrytis
B) Pythium
C) Rhizoctonia
D) Phyrophthora
Botrytis
The Environmental Protection Agency establishes toxicity categories for pesticides
based on how soon one can reenter the area after it has been treated with the
pesticide. Which toxicity level can be reentered immediately after pesticide
application?
A) Toxicity 1
B) Toxicity 2
C) Toxicity 3
D) Toxicity 4
Toxicity 4
In order to preserve foliage in a more natural, pliable state, place stems in:
A) glycerin
C) herbicidal soap
B) bleach
D) borax
glycerin
Greenhouse glazing is:
A) material sprayed on the roof of a greenhouse to change light intensity
B) the transparent cover of the greenhouse frame
C) the amount of solar energy that reaches the plants in a greenhouse
D) a measure of heat loss from a greenhouse
the transparent cover of the greenhouse frame
Plants are divided into C3 and C4 groups. C4 plants are differentiated from C3 plants by
which of the following?
A) C4 plants flower in shades of red where as C3 plants do not
B) C4 plants have a higher relative photosynthesis rate
C) C4 plants are not as efficient at using carbon dioxide
D) C4 plants cannot function as well under high temperature and light conditions
C4 plants have a higher relative photosynthesis rate
When water is not applied frequently enough, plants wilt and
A) photosynthesis is slowed.
B) plant growth is slowed.
C) cell production is reduced.
D) all of the above
all of the above
A plant that is genetically identical to the parent plant is known as a ________.
A) clone
B) seedling
C) replica
D) hybrid
clone
Cross-pollination occurs when pollen grains from the flowers on one plant transfer to
the ________________ of flowers on another plant.
A) anther
B) ovary
C) stigma
D) style
stigma
________________________ is a process of events whereby the seed embryo goes from a
dormant state to an actively growing state.
A) broadcasting
B) fertilization
C) germination
D) pollination
germination
Some seeds have a hard seed coat that must be soaked or scratched before the seeds
are able to germinate. This process is called ______________________.
A) drenching
B) forcing
C) scarification
D) stratification
scarification
The ____________________ is the food storage tissue in the seed that nourishes the plant during
germination.
A) embryonic root
B) endosperm
C) seed coat
D) seed leaf
endosperm
____________________________ is a gray-white soil mix material of volcanic origin that is most
commonly used to improve aeration of growing media.
A) Coir
B) Peat moss
C) Perlite
D) Vermiculite
Perlite
The ability of a plant to withstand colder temperatures is known as __________________
A) cold-sensitive
B) heat-tolerant
C) hardiness
D) morphology
hardiness
____________________________ are plants characterized by one cotyledon in the seedling stage,
flower parts in threes or multiples thereof, and parallel leaf venation.
A) Dicots
B) Evergreens
C) Monocots
D) Perennials
Monocots
Students also viewed