Louisiana Horticulture Test Study Guide /
Actual Questions & Answers for Guaranteed
Pass / Newest Update 2025/26,.
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
Actual Questions & Answers for Guaranteed
Pass / Newest Update 2025/26,.
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
