LOUISIANA HORTICULTURE TEST STUDY GUIDE
What is the difference between a cultivar and variety? - Answers :Cultivar- A plant or
grouping of plants selected for desirable characteristics that can be maintained by
propagation
Variety- A naturally occurring subgroup of a species which has some distinguishing
characters
Who is Linnaeus? What system of naming plants did he create? - Answers :Linnaeus is
a Swedish Botanist who developed the Binomial System of Nomenclature(Genus +
Species)
Define xylem and phloem. - Answers :xylem- the transport vessel for water and minerals
from root to leaf
phloem- the transport vessel for manufactured food from leaf to stem
What is the difference between monocots and dicots? - Answers :monocots- plants that
have a single seed leaf(corn; grass; lilly)
dicots- plants that have two seed leaves(trees; shrubs; annuals)
What are nodes and internodes? - Answers :nodes- the area on stems where leaves
emerge
internodes- the area on stems in between where leaves emerge
List the types of specialized stems and roots commonly found in plants. - Answers
:Bulbs; Corms; Rhizomes; Tubers; Tuberous Roots
What are the two main functions of leaves? - Answers :Photosynthesis and
Transpiration
Define angiosperms and gymnosperms. - Answers :Angiosperms- plants that bloom and
develop fruit which encloses the seed
Gymnosperms- plants that have no true flowers or fruit, but make seeds in cones
List the parts of a complete flower. - Answers :Stamen(Anther & Filament)
Pistil(Stilma; Style; Ovary)
Petal
Sepal
Locule
Ovule
Placenta
, Receptacle
Peduncle
List the priority in which plant parts receive food manufactured by the leaves. - Answers
:1)Flower
2)Seed
3)Leaves
4)Stems
5)Roots
List three primary elements for essential plant growth. - Answers :Carbon; Hydrogen;
Oxygen
List the three macronutrients essential for plant growth. - Answers :Nitrogen;
Phosphorus; Potassium
List the seven Micronutrients needed for optimum plant growth. - Answers :Boron;
Copper; Chlorine; Iron; Manganese; Molybdenum; Zinc
How is light intensity commonly measured? - Answers :Foot Candles: The amount of
light falling on one square foot one foot away from a standard candle
List three functions of water in a plant. - Answers :1)Ingredient of Photosynthesis
2)Solvent for nutrients
3)Gives the plant tissue rigidity
Define permanent wilting point. - Answers :when all gravitational water and the available
water are gone and only the graivable water remains
Define microclimate. - Answers :describes areas with certain consistent variation in
light, temperature, and moisture in a garden
List three ways heat travels. - Answers :1. Conduction
2. Convention
3. Radiation
Define soil texture. - Answers :determined by the relative proportion of its mineral
particles and is classified as sand, silt, and clay
Define soil structure. - Answers :the way various particles are arranged determine soil
structures(sandy or clay soils)
Soils can be classified as ________ or ________. - Answers :fine or coarse
________ is commonly added to acid soils to raise pH. - Answers :Lime
What is the difference between a cultivar and variety? - Answers :Cultivar- A plant or
grouping of plants selected for desirable characteristics that can be maintained by
propagation
Variety- A naturally occurring subgroup of a species which has some distinguishing
characters
Who is Linnaeus? What system of naming plants did he create? - Answers :Linnaeus is
a Swedish Botanist who developed the Binomial System of Nomenclature(Genus +
Species)
Define xylem and phloem. - Answers :xylem- the transport vessel for water and minerals
from root to leaf
phloem- the transport vessel for manufactured food from leaf to stem
What is the difference between monocots and dicots? - Answers :monocots- plants that
have a single seed leaf(corn; grass; lilly)
dicots- plants that have two seed leaves(trees; shrubs; annuals)
What are nodes and internodes? - Answers :nodes- the area on stems where leaves
emerge
internodes- the area on stems in between where leaves emerge
List the types of specialized stems and roots commonly found in plants. - Answers
:Bulbs; Corms; Rhizomes; Tubers; Tuberous Roots
What are the two main functions of leaves? - Answers :Photosynthesis and
Transpiration
Define angiosperms and gymnosperms. - Answers :Angiosperms- plants that bloom and
develop fruit which encloses the seed
Gymnosperms- plants that have no true flowers or fruit, but make seeds in cones
List the parts of a complete flower. - Answers :Stamen(Anther & Filament)
Pistil(Stilma; Style; Ovary)
Petal
Sepal
Locule
Ovule
Placenta
, Receptacle
Peduncle
List the priority in which plant parts receive food manufactured by the leaves. - Answers
:1)Flower
2)Seed
3)Leaves
4)Stems
5)Roots
List three primary elements for essential plant growth. - Answers :Carbon; Hydrogen;
Oxygen
List the three macronutrients essential for plant growth. - Answers :Nitrogen;
Phosphorus; Potassium
List the seven Micronutrients needed for optimum plant growth. - Answers :Boron;
Copper; Chlorine; Iron; Manganese; Molybdenum; Zinc
How is light intensity commonly measured? - Answers :Foot Candles: The amount of
light falling on one square foot one foot away from a standard candle
List three functions of water in a plant. - Answers :1)Ingredient of Photosynthesis
2)Solvent for nutrients
3)Gives the plant tissue rigidity
Define permanent wilting point. - Answers :when all gravitational water and the available
water are gone and only the graivable water remains
Define microclimate. - Answers :describes areas with certain consistent variation in
light, temperature, and moisture in a garden
List three ways heat travels. - Answers :1. Conduction
2. Convention
3. Radiation
Define soil texture. - Answers :determined by the relative proportion of its mineral
particles and is classified as sand, silt, and clay
Define soil structure. - Answers :the way various particles are arranged determine soil
structures(sandy or clay soils)
Soils can be classified as ________ or ________. - Answers :fine or coarse
________ is commonly added to acid soils to raise pH. - Answers :Lime
