Louisiana Horticulture License Exam
2025 Questions and Answers
What is the difference between a cultivar and variety? - Correct Answer✔️✔️-variety - naturally
occurring subgroup within species.
cultivar - special group that retain their distinguishing features when propogated.
Who is Linnaeus? What system of naming plants did he create? - Correct Answer✔️✔️--developed
binomial nomenclature.
-Classification system in which each species is assigned a two-part scientific name.
Why is it important to know common and scientific names of plants? - Correct Answer✔️✔️--
customer protection, legal requirements, communication between nursery and landscape pros
What are some origins of botanical names? - Correct Answer✔️✔️-1. Countries of origin
2. Names of plant explorers
3. Descriptive latin terms
What are some typical groupings for plants when they are classified by growth characteristics? -
Correct Answer✔️✔️-1. Herbaceous or woody
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 1
,2. Life span
3. Leaf retention
4. Growth habit
5. Stem structure
6. Size
7. Form
8. Temp tender
9. Light
10. Water
11. Use
List the functions of a root system - Correct Answer✔️✔️-anchorage, absorption, conduction,
storage
What are 2 kinds of root systems - Correct Answer✔️✔️-Taproots and fibrous roots
List the functions of the stem of the plant - Correct Answer✔️✔️-support, conduction, storage
Define xylem and phloem - Correct Answer✔️✔️-xylem-water and minerals move from roots to
leaves.
phloem-food from leaves moves to the plant
What is the difference between monocots and dicots? - Correct Answer✔️✔️-Number of
cotyledons
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 2
, mono- 1
dicots-2
What are nodes and internodes - Correct Answer✔️✔️-nodes- areas on stems where leaves
emerge.
internodes-space between nodes
List the types of specialized stems and roots commonly found in plants - Correct Answer✔️✔️-
bulbs, corms, rhizomes, tubers, tuberous roots
What are the 2 main functions of leaves - Correct Answer✔️✔️-photosynthesis and transpiration
Transpiration- evaporation of water from the leaves of a plant
Define angiosperms and gymnosperms - Correct Answer✔️✔️-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 - Correct Answer✔️✔️--Stamen(Anther & Filament)
-Pistil(Stilma; Style; Ovary)
-Petal
-Sepal
-Locule
-Ovule
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 3
2025 Questions and Answers
What is the difference between a cultivar and variety? - Correct Answer✔️✔️-variety - naturally
occurring subgroup within species.
cultivar - special group that retain their distinguishing features when propogated.
Who is Linnaeus? What system of naming plants did he create? - Correct Answer✔️✔️--developed
binomial nomenclature.
-Classification system in which each species is assigned a two-part scientific name.
Why is it important to know common and scientific names of plants? - Correct Answer✔️✔️--
customer protection, legal requirements, communication between nursery and landscape pros
What are some origins of botanical names? - Correct Answer✔️✔️-1. Countries of origin
2. Names of plant explorers
3. Descriptive latin terms
What are some typical groupings for plants when they are classified by growth characteristics? -
Correct Answer✔️✔️-1. Herbaceous or woody
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 1
,2. Life span
3. Leaf retention
4. Growth habit
5. Stem structure
6. Size
7. Form
8. Temp tender
9. Light
10. Water
11. Use
List the functions of a root system - Correct Answer✔️✔️-anchorage, absorption, conduction,
storage
What are 2 kinds of root systems - Correct Answer✔️✔️-Taproots and fibrous roots
List the functions of the stem of the plant - Correct Answer✔️✔️-support, conduction, storage
Define xylem and phloem - Correct Answer✔️✔️-xylem-water and minerals move from roots to
leaves.
phloem-food from leaves moves to the plant
What is the difference between monocots and dicots? - Correct Answer✔️✔️-Number of
cotyledons
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 2
, mono- 1
dicots-2
What are nodes and internodes - Correct Answer✔️✔️-nodes- areas on stems where leaves
emerge.
internodes-space between nodes
List the types of specialized stems and roots commonly found in plants - Correct Answer✔️✔️-
bulbs, corms, rhizomes, tubers, tuberous roots
What are the 2 main functions of leaves - Correct Answer✔️✔️-photosynthesis and transpiration
Transpiration- evaporation of water from the leaves of a plant
Define angiosperms and gymnosperms - Correct Answer✔️✔️-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 - Correct Answer✔️✔️--Stamen(Anther & Filament)
-Pistil(Stilma; Style; Ovary)
-Petal
-Sepal
-Locule
-Ovule
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 3
