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LOUISIANA LANDSCAPE HORTICULTURE STATE EXAM
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LOUISIANA LANDSCAPE HORTICULTURE STATE EXAM
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LOUISIANA LANDSCAPE HORTICULTURE STATEEXAM
Cultivars - Answers-designates a special group of plants, may differ in growth habit,
season of maturity, fruit, color, shape
root systems - Answers-taproot and fibrous
function of root system - Answers-absorption, anchorage, conduction, storage
taproot - Answers-grows directly downward
stems - Answers-support, conduction, storage
conduction - Answers-movement of water, mineral solutions, and substances
manufactured in plants
Angiosperms - Answers-flowering plants that produce seeds in fruit
Gymnosperms - Answers-plants that produce seeds but not flowers
pistil - Answers-Female part of the flower
stigma - Answers-expanded tip of the style
priority in which plants receive food - Answers-flowers, seeds, leaves, stems, roots
macronutrients - Answers-nitrogen, phosphorus, potassium
Micronutrients - Answers-boron, manganese, copper, zinc, iron, molybdenum, chlorine
N-P-K - Answers-nitrogen, phosphorus, potassium
WATER - Answers-ingredient in photosynthesis, solvent for nutrients, cools plant during
transpiration, gives plant tissue rigidity and turgor
Permanent Wilting Point (PWP) - Answers-soil moisture content at which plants can no
longer obtain enough moisture to meet transpiration requirements, causing the plant to
wilt and die
, xylem - Answers-vascular tissue that carries water upward from the roots to every part
of a plant through inner tissue
phloem - Answers-food from leaves moves out of leaves through outer stem
monocots - Answers-angiosperms that have only one seed leaf
Dicots - Answers-angiosperms that have two seed leaves
girdle - Answers-complete circle of dead tissue around the stem with interrupts the food
supply pipeline
nodes - Answers-where leaves attach to stem
internodes - Answers-the stem segments between nodes
specialized stems and roots - Answers-bulbs, corms, rhizomes, tubers, tuberous roots
Microclimate - Answers-areas with certain consistent variations in light, temperature,
and moisture in a garden
heat travels - Answers-conduction, convection, radiation
AVG. # of days per year above 86 degrees F zone 8 - Answers-90 to 120 days
AVG. # of days per year above 86 degrees F zone 9 - Answers-120-150 days
soil texture - Answers-Relative amounts of the different types and sizes of mineral
particles in a sample of soil. classified as sand, silt, and clay
soil structure - Answers-the arrangement of soil particles. can be single grained (sandy
soils) or particles grouped together (clay soils)
organic matter - Answers-classified according to the percentage of organic matter
present in the strata's top 12 inches
ph scale 1-6 - Answers-acid
ph scale 7 - Answers-neutral
ph scale 8-14 - Answers-alkaline
sulfur - Answers-added to alkaline soils to lower pH
lime - Answers-added to acid soils to raise pH
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