LOUISIANA LANDSCAPE HORTICULTURIST EXAM
QUESTIONS AND CORRECT ANSWERS (VERIFIED
ANSWERS) Q&A 2027 |INSTANT DOWNLOAD PDF
1. What is the primary purpose of landscape horticulture?
A. Producing only food crops
B. Managing plants and landscapes for functional and aesthetic
purposes
C. Manufacturing fertilizers
D. Constructing highways
Rationale: Landscape horticulture combines plant science,
design, installation, and maintenance to create functional and
attractive landscapes.
Correct Answer: B. Managing plants and landscapes for
functional and aesthetic purposes
2. Which soil component provides the greatest surface area
for plant root growth and nutrient exchange?
A. Gravel
B. Clay particles
C. Large rocks
D. Organic debris only
Rationale: Clay has extremely small particles and a large
surface area, allowing it to hold water and nutrients effectively.
Correct Answer: B. Clay particles
,3. What is the main function of chlorophyll in plants?
A. Absorbing water from soil
B. Producing roots
C. Absorbing light energy for photosynthesis
D. Preventing all insect damage
Rationale: Chlorophyll captures light energy used during
photosynthesis.
Correct Answer: C. Absorbing light energy for photosynthesis
4. Which nutrient is generally required in the largest quantity
by plants?
A. Nitrogen
B. Boron
C. Zinc
D. Copper
Rationale: Nitrogen is a primary macronutrient needed for
vegetative growth, proteins, and chlorophyll formation.
Correct Answer: A. Nitrogen
5. What is the best general method for determining whether a
landscape needs fertilizer?
A. Applying fertilizer every week
B. Soil testing
C. Looking at the color of nearby buildings
D. Watering more frequently
,Rationale: Soil testing provides information about nutrient
levels and helps guide appropriate fertilization.
Correct Answer: B. Soil testing
6. Which plant tissue transports water and minerals from the
roots upward?
A. Phloem
B. Xylem
C. Epidermis
D. Cambium only
Rationale: Xylem conducts water and dissolved minerals from
roots toward stems and leaves.
Correct Answer: B. Xylem
7. Which plant tissue primarily transports sugars produced by
photosynthesis?
A. Xylem
B. Phloem
C. Root cap
D. Cork
Rationale: Phloem transports sugars and other organic
compounds throughout the plant.
Correct Answer: B. Phloem
8. What is transpiration?
A. Absorption of fertilizer
B. Loss of water vapor from plant surfaces
, C. Production of seeds
D. Root development
Rationale: Transpiration is the loss of water vapor, primarily
through stomata in leaves.
Correct Answer: B. Loss of water vapor from plant surfaces
9. Which soil texture generally drains water most rapidly?
A. Clay
B. Silt
C. Sand
D. Heavy loam
Rationale: Sand has relatively large particles and pore spaces
that allow water to move quickly.
Correct Answer: C. Sand
10. What is compost primarily used for in landscape
horticulture?
A. Increasing soil organic matter
B. Killing every soil organism
C. Replacing irrigation
D. Removing all clay from soil
Rationale: Compost adds organic matter and can improve soil
structure, moisture retention, and biological activity.
Correct Answer: A. Increasing soil organic matter
11. Which practice helps reduce soil compaction around
landscape plants?
A. Repeatedly driving vehicles over root zones
QUESTIONS AND CORRECT ANSWERS (VERIFIED
ANSWERS) Q&A 2027 |INSTANT DOWNLOAD PDF
1. What is the primary purpose of landscape horticulture?
A. Producing only food crops
B. Managing plants and landscapes for functional and aesthetic
purposes
C. Manufacturing fertilizers
D. Constructing highways
Rationale: Landscape horticulture combines plant science,
design, installation, and maintenance to create functional and
attractive landscapes.
Correct Answer: B. Managing plants and landscapes for
functional and aesthetic purposes
2. Which soil component provides the greatest surface area
for plant root growth and nutrient exchange?
A. Gravel
B. Clay particles
C. Large rocks
D. Organic debris only
Rationale: Clay has extremely small particles and a large
surface area, allowing it to hold water and nutrients effectively.
Correct Answer: B. Clay particles
,3. What is the main function of chlorophyll in plants?
A. Absorbing water from soil
B. Producing roots
C. Absorbing light energy for photosynthesis
D. Preventing all insect damage
Rationale: Chlorophyll captures light energy used during
photosynthesis.
Correct Answer: C. Absorbing light energy for photosynthesis
4. Which nutrient is generally required in the largest quantity
by plants?
A. Nitrogen
B. Boron
C. Zinc
D. Copper
Rationale: Nitrogen is a primary macronutrient needed for
vegetative growth, proteins, and chlorophyll formation.
Correct Answer: A. Nitrogen
5. What is the best general method for determining whether a
landscape needs fertilizer?
A. Applying fertilizer every week
B. Soil testing
C. Looking at the color of nearby buildings
D. Watering more frequently
,Rationale: Soil testing provides information about nutrient
levels and helps guide appropriate fertilization.
Correct Answer: B. Soil testing
6. Which plant tissue transports water and minerals from the
roots upward?
A. Phloem
B. Xylem
C. Epidermis
D. Cambium only
Rationale: Xylem conducts water and dissolved minerals from
roots toward stems and leaves.
Correct Answer: B. Xylem
7. Which plant tissue primarily transports sugars produced by
photosynthesis?
A. Xylem
B. Phloem
C. Root cap
D. Cork
Rationale: Phloem transports sugars and other organic
compounds throughout the plant.
Correct Answer: B. Phloem
8. What is transpiration?
A. Absorption of fertilizer
B. Loss of water vapor from plant surfaces
, C. Production of seeds
D. Root development
Rationale: Transpiration is the loss of water vapor, primarily
through stomata in leaves.
Correct Answer: B. Loss of water vapor from plant surfaces
9. Which soil texture generally drains water most rapidly?
A. Clay
B. Silt
C. Sand
D. Heavy loam
Rationale: Sand has relatively large particles and pore spaces
that allow water to move quickly.
Correct Answer: C. Sand
10. What is compost primarily used for in landscape
horticulture?
A. Increasing soil organic matter
B. Killing every soil organism
C. Replacing irrigation
D. Removing all clay from soil
Rationale: Compost adds organic matter and can improve soil
structure, moisture retention, and biological activity.
Correct Answer: A. Increasing soil organic matter
11. Which practice helps reduce soil compaction around
landscape plants?
A. Repeatedly driving vehicles over root zones
