LOUISIANA HORTICULTURE EXAM READY - VERIFIED QUESTIONS AND
ANSWERS - COMPREHENSIVE LATEST VERSION (2026/2027)
1. What process do plants use to convert sunlight into food?
A) Respiration
B) Photosynthesis
C) Transpiration
D) Fermentation
Answer: B
2. Which plant hormone promotes cell elongation and is responsible for
phototropism?
A) Cytokinin
B) Gibberellin
C) Auxin
D) Ethylene
Answer: C
3. What is the primary function of the xylem in plants?
A) Transport sugars downward
B) Transport water and minerals upward
C) Store starch
D) Produce chlorophyll
Answer: B
4. Which part of the flower produces pollen?
A) Pistil
B) Petal
C) Anther
D) Stigma
Answer: C
5. What is the term for plants that complete their life cycle in one growing
season?
A) Perennial
, B) Biennial
C) Annual
D) Ephemeral
Answer: C
6. The process by which water vapor exits a plant through leaf pores is
called:
A) Osmosis
B) Transpiration
C) Guttation
D) Diffusion
Answer: B
7. What are the small openings on leaves that control gas exchange?
A) Lenticels
B) Stomata
C) Chloroplasts
D) Meristems
Answer: B
8. Which macronutrient is most important for leaf and vegetative growth?
A) Phosphorus
B) Potassium
C) Nitrogen
D) Calcium
Answer: C
9. What is the outermost layer of cells on a plant called?
A) Cortex
B) Pith
C) Epidermis
D) Endodermis
Answer: C
10. Biennial plants complete their life cycle in:
A) One year
B) Two years
C) Three years
D) Five years
Answer: B
,11. Which nutrient promotes root development and flower/fruit production?
A) Nitrogen
B) Phosphorus
C) Magnesium
D) Sulfur
Answer: B
12. The waxy coating on leaves that reduces water loss is called the:
A) Cuticle
B) Epidermis
C) Mesophyll
D) Phloem
Answer: A
13. What type of root system do monocots typically have?
A) Taproot
B) Fibrous
C) Adventitious
D) Tuberous
Answer: B
14. Chlorophyll is found in which organelle?
A) Mitochondria
B) Vacuole
C) Chloroplast
D) Nucleus
Answer: C
15. What is the term for asexual reproduction in plants through bulbs,
corms, or rhizomes?
A) Cross-pollination
B) Vegetative propagation
C) Grafting
D) Layering
Answer: B
16. Louisiana is primarily located in which USDA Plant Hardiness Zone
range?
A) Zones 4-5
B) Zones 6-7
, C) Zones 8-10
D) Zones 11-12
Answer: C
17. What type of soil is most common in the Louisiana coastal plain?
A) Sandy loam
B) Heavy clay
C) Sandy
D) Rocky
Answer: B
18. The Mississippi River delta has which type of soil?
A) Alluvial
B) Sandy
C) Rocky
D) Peat
Answer: A
19. What is the average annual rainfall in Louisiana?
A) 20-30 inches
B) 35-45 inches
C) 55-65 inches
D) 75-85 inches
Answer: C
20. Which soil pH range is generally ideal for most Louisiana vegetable
gardens?
A) 4.0-5.0
B) 5.5-6.5
C) 7.0-8.0
D) 8.5-9.5
Answer: B
21. What is the primary challenge of gardening in Louisiana's coastal
parishes?
A) Too cold
B) Soil salinity
C) Lack of rainfall
D) Too much shade
Answer: B
ANSWERS - COMPREHENSIVE LATEST VERSION (2026/2027)
1. What process do plants use to convert sunlight into food?
A) Respiration
B) Photosynthesis
C) Transpiration
D) Fermentation
Answer: B
2. Which plant hormone promotes cell elongation and is responsible for
phototropism?
A) Cytokinin
B) Gibberellin
C) Auxin
D) Ethylene
Answer: C
3. What is the primary function of the xylem in plants?
A) Transport sugars downward
B) Transport water and minerals upward
C) Store starch
D) Produce chlorophyll
Answer: B
4. Which part of the flower produces pollen?
A) Pistil
B) Petal
C) Anther
D) Stigma
Answer: C
5. What is the term for plants that complete their life cycle in one growing
season?
A) Perennial
, B) Biennial
C) Annual
D) Ephemeral
Answer: C
6. The process by which water vapor exits a plant through leaf pores is
called:
A) Osmosis
B) Transpiration
C) Guttation
D) Diffusion
Answer: B
7. What are the small openings on leaves that control gas exchange?
A) Lenticels
B) Stomata
C) Chloroplasts
D) Meristems
Answer: B
8. Which macronutrient is most important for leaf and vegetative growth?
A) Phosphorus
B) Potassium
C) Nitrogen
D) Calcium
Answer: C
9. What is the outermost layer of cells on a plant called?
A) Cortex
B) Pith
C) Epidermis
D) Endodermis
Answer: C
10. Biennial plants complete their life cycle in:
A) One year
B) Two years
C) Three years
D) Five years
Answer: B
,11. Which nutrient promotes root development and flower/fruit production?
A) Nitrogen
B) Phosphorus
C) Magnesium
D) Sulfur
Answer: B
12. The waxy coating on leaves that reduces water loss is called the:
A) Cuticle
B) Epidermis
C) Mesophyll
D) Phloem
Answer: A
13. What type of root system do monocots typically have?
A) Taproot
B) Fibrous
C) Adventitious
D) Tuberous
Answer: B
14. Chlorophyll is found in which organelle?
A) Mitochondria
B) Vacuole
C) Chloroplast
D) Nucleus
Answer: C
15. What is the term for asexual reproduction in plants through bulbs,
corms, or rhizomes?
A) Cross-pollination
B) Vegetative propagation
C) Grafting
D) Layering
Answer: B
16. Louisiana is primarily located in which USDA Plant Hardiness Zone
range?
A) Zones 4-5
B) Zones 6-7
, C) Zones 8-10
D) Zones 11-12
Answer: C
17. What type of soil is most common in the Louisiana coastal plain?
A) Sandy loam
B) Heavy clay
C) Sandy
D) Rocky
Answer: B
18. The Mississippi River delta has which type of soil?
A) Alluvial
B) Sandy
C) Rocky
D) Peat
Answer: A
19. What is the average annual rainfall in Louisiana?
A) 20-30 inches
B) 35-45 inches
C) 55-65 inches
D) 75-85 inches
Answer: C
20. Which soil pH range is generally ideal for most Louisiana vegetable
gardens?
A) 4.0-5.0
B) 5.5-6.5
C) 7.0-8.0
D) 8.5-9.5
Answer: B
21. What is the primary challenge of gardening in Louisiana's coastal
parishes?
A) Too cold
B) Soil salinity
C) Lack of rainfall
D) Too much shade
Answer: B
