Louisiana Horticulture Exam UPDATED ACTUAL
QUESTIONS AND CORRECT ANSWERS
Linneaus - CORRECT ANSWER developed binomial nomenclature
Binomial nomenclature - CORRECT ANSWER Classification system in which each
species is assigned a two-part scientific name
Difference between variety and cultivar - CORRECT ANSWER variety - naturally
occurring subgroup within species
Cultivar - special group that retain their distinguishing features when propogated
Importance of proper naming of plants - CORRECT ANSWER customer protection,
legal requirements, communication between nursery and landscape pros
Origins of botanical names - CORRECT ANSWER 1. Countries of origin
2. Names of plant explorers
3. Descriptive latin terms
Horticultural groupings - CORRECT ANSWER 1. Herbaceous or woody
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
Functions of root system - CORRECT ANSWER anchorage, absorption, conduction,
storage
Functions of the stem - CORRECT ANSWER support, conduction, storage
Xylem - CORRECT ANSWER water and minerals move from roots to leaves
Phloem - CORRECT ANSWER food from leaves moves to the plant
Cambium layer - CORRECT ANSWER tissue between xylem and phloem
, Girdle - CORRECT ANSWER circle of dead tissue around stem
Nodes - CORRECT ANSWER areas on stems where leaves emerge
Internodes - CORRECT ANSWER space between nodes
Axillary bud - CORRECT ANSWER compressed dormant stem where leaf joins stem
Axil - CORRECT ANSWER angle of the leaf
Crown - CORRECT ANSWER where steam and root meet
Forms of propogation - CORRECT ANSWER bulbs, corms, rhizomes, tubers, tuberous
roots
Functions of the leaf - CORRECT ANSWER photosynthesis and transpiration
Transpiration - CORRECT ANSWER evaporation of water from the leaves of a plant
Angiosperms - CORRECT ANSWER flowering plants
Gymnosperms - CORRECT ANSWER a plant that produces uncovered seeds; no fruit
Plant food priority order - CORRECT ANSWER 1. Flower
2. Seeds
3. Leaves
4. Stems
5. Roots
3 essential elements - CORRECT ANSWER 1. Carbon
2. Hydrogen
3. Oxygen
Macronutrients - CORRECT ANSWER 1. Nitrogen
2. Phosphorus
3. Potassium
4. Calcium
5. Magnesium
6. Sulfur
QUESTIONS AND CORRECT ANSWERS
Linneaus - CORRECT ANSWER developed binomial nomenclature
Binomial nomenclature - CORRECT ANSWER Classification system in which each
species is assigned a two-part scientific name
Difference between variety and cultivar - CORRECT ANSWER variety - naturally
occurring subgroup within species
Cultivar - special group that retain their distinguishing features when propogated
Importance of proper naming of plants - CORRECT ANSWER customer protection,
legal requirements, communication between nursery and landscape pros
Origins of botanical names - CORRECT ANSWER 1. Countries of origin
2. Names of plant explorers
3. Descriptive latin terms
Horticultural groupings - CORRECT ANSWER 1. Herbaceous or woody
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
Functions of root system - CORRECT ANSWER anchorage, absorption, conduction,
storage
Functions of the stem - CORRECT ANSWER support, conduction, storage
Xylem - CORRECT ANSWER water and minerals move from roots to leaves
Phloem - CORRECT ANSWER food from leaves moves to the plant
Cambium layer - CORRECT ANSWER tissue between xylem and phloem
, Girdle - CORRECT ANSWER circle of dead tissue around stem
Nodes - CORRECT ANSWER areas on stems where leaves emerge
Internodes - CORRECT ANSWER space between nodes
Axillary bud - CORRECT ANSWER compressed dormant stem where leaf joins stem
Axil - CORRECT ANSWER angle of the leaf
Crown - CORRECT ANSWER where steam and root meet
Forms of propogation - CORRECT ANSWER bulbs, corms, rhizomes, tubers, tuberous
roots
Functions of the leaf - CORRECT ANSWER photosynthesis and transpiration
Transpiration - CORRECT ANSWER evaporation of water from the leaves of a plant
Angiosperms - CORRECT ANSWER flowering plants
Gymnosperms - CORRECT ANSWER a plant that produces uncovered seeds; no fruit
Plant food priority order - CORRECT ANSWER 1. Flower
2. Seeds
3. Leaves
4. Stems
5. Roots
3 essential elements - CORRECT ANSWER 1. Carbon
2. Hydrogen
3. Oxygen
Macronutrients - CORRECT ANSWER 1. Nitrogen
2. Phosphorus
3. Potassium
4. Calcium
5. Magnesium
6. Sulfur
