LOUISIANA HORTICULTURE TEST
STUDY GUIDE 100% ACCURATE 2025
What is the difference between a cultivar and variety? - ANSWERCultivar- 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? - ANSWERLinnaeus is
a Swedish Botanist who developed the Binomial System of Nomenclature(Genus +
Species)
Why is it important to know common and scientific names of plants? - ANSWERSo that
you can communicate with others without confusion about the identity of a plant
What are some origins of botanical names? - ANSWERCountry of origin, Names of
Explorers, and Descriptive Latin Terms
What are some typical groupings for plants when they are classified by growth
characteristics? - ANSWERLife Span, Leaf Retention, Growth Habits, Light, Size
List the functions of a root system. - ANSWERAbsorption, Anchorage, Conduction,
Storage
What are two kinds of root systems? - ANSWERFibrous and Taproot
List the functions of the stem of a plant. - ANSWERSupport; Conduction; Storage
Define xylem and phloem. - ANSWERxylem- 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? - ANSWERmonocots- 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? - ANSWERnodes- 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. -
ANSWERBulbs; Corms; Rhizomes; Tubers; Tuberous Roots
What are the two main functions of leaves? - ANSWERPhotosynthesis and
Transpiration
Define angiosperms and gymnosperms. - ANSWERAngiosperms- 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. - ANSWERStamen(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. -
ANSWER1)Flower
2)Seed
3)Leaves
4)Stems
5)Roots
List three primary elements for essential plant growth. - ANSWERCarbon; Hydrogen;
Oxygen
List the three macronutrients essential for plant growth. - ANSWERNitrogen;
Phosphorus; Potassium
List the seven Micronutrients needed for optimum plant growth. - ANSWERBoron;
Copper; Chlorine; Iron; Manganese; Molybdenum; Zinc
How is light intensity commonly measured? - ANSWERFoot 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. - ANSWER1)Ingredient of Photosynthesis
2)Solvent for nutrients
3)Gives the plant tissue rigidity
STUDY GUIDE 100% ACCURATE 2025
What is the difference between a cultivar and variety? - ANSWERCultivar- 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? - ANSWERLinnaeus is
a Swedish Botanist who developed the Binomial System of Nomenclature(Genus +
Species)
Why is it important to know common and scientific names of plants? - ANSWERSo that
you can communicate with others without confusion about the identity of a plant
What are some origins of botanical names? - ANSWERCountry of origin, Names of
Explorers, and Descriptive Latin Terms
What are some typical groupings for plants when they are classified by growth
characteristics? - ANSWERLife Span, Leaf Retention, Growth Habits, Light, Size
List the functions of a root system. - ANSWERAbsorption, Anchorage, Conduction,
Storage
What are two kinds of root systems? - ANSWERFibrous and Taproot
List the functions of the stem of a plant. - ANSWERSupport; Conduction; Storage
Define xylem and phloem. - ANSWERxylem- 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? - ANSWERmonocots- 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? - ANSWERnodes- 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. -
ANSWERBulbs; Corms; Rhizomes; Tubers; Tuberous Roots
What are the two main functions of leaves? - ANSWERPhotosynthesis and
Transpiration
Define angiosperms and gymnosperms. - ANSWERAngiosperms- 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. - ANSWERStamen(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. -
ANSWER1)Flower
2)Seed
3)Leaves
4)Stems
5)Roots
List three primary elements for essential plant growth. - ANSWERCarbon; Hydrogen;
Oxygen
List the three macronutrients essential for plant growth. - ANSWERNitrogen;
Phosphorus; Potassium
List the seven Micronutrients needed for optimum plant growth. - ANSWERBoron;
Copper; Chlorine; Iron; Manganese; Molybdenum; Zinc
How is light intensity commonly measured? - ANSWERFoot 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. - ANSWER1)Ingredient of Photosynthesis
2)Solvent for nutrients
3)Gives the plant tissue rigidity
