Nevada C-10 Landscape Contractor
Examination Exam Practice Questions
And Correct Answers (Verified Answers)
Plus Rationales 2026 Q&A | Instant
Download Pdf
1. What is the primary purpose of a soil test before beginning a
landscaping project?
A. To estimate the cost of landscaping
B. To determine the type of plants suitable for the site
C. To locate underground utilities
D. To measure soil temperature
B. To determine the type of plants suitable for the site
Soil tests provide information about pH, nutrient content, and soil
composition, which helps in selecting plants that will thrive in the specific
conditions of the site.
2. Which of the following is the most effective method for preventing
soil erosion on a slope?
A. Planting groundcover
B. Installing a sidewalk
C. Spraying herbicide
D. Using gravel mulch
A. Planting groundcover
Groundcover plants help stabilize soil by protecting it from rainfall impact
and reducing runoff, effectively preventing erosion.
, 3. What is the recommended minimum depth for tree planting holes
relative to the root ball?
A. Same depth as the root ball
B. Twice the depth of the root ball
C. Half the depth of the root ball
D. Three times the depth of the root ball
A. Same depth as the root ball
Planting trees at the same depth as their root ball prevents root
suffocation and ensures proper establishment.
4. Which irrigation system is most efficient for conserving water in arid
climates?
A. Sprinkler irrigation
B. Surface flooding
C. Drip irrigation
D. Soaker hoses
C. Drip irrigation
Drip irrigation delivers water directly to the root zone, minimizing
evaporation and runoff, which is especially important in arid climates.
5. When installing hardscape features, which factor is most critical for
long-term stability?
A. Color of materials
B. Compaction of base material
C. Type of plants nearby
D. Height above surrounding soil
B. Compaction of base material
Properly compacted base material provides support and prevents settling
or shifting of hardscape features over time.
6. Which plant characteristic is most important for reducing
maintenance in a xeriscape design?
A. Fast growth rate
, B. High water requirement
C. Drought tolerance
D. Seasonal flowering
C. Drought tolerance
Drought-tolerant plants require minimal irrigation, which aligns with
xeriscaping principles of water conservation.
7. In landscape lighting design, what is the primary purpose of using low-
voltage lighting?
A. To increase brightness
B. To reduce energy consumption and enhance safety
C. To change plant growth patterns
D. To prevent wildlife interference
B. To reduce energy consumption and enhance safety
Low-voltage lighting is energy-efficient, reduces electrical hazards, and
provides adequate illumination for pathways and features.
8. Which of the following materials is most suitable for constructing a
retaining wall to resist lateral soil pressure?
A. Untreated timber
B. Reinforced concrete
C. Plastic sheets
D. Gravel mulch
B. Reinforced concrete
Reinforced concrete has the strength to resist lateral soil pressures and
provide long-term stability for retaining walls.
9. What is the main purpose of using mulch in landscape beds?
A. To decorate the soil
B. To conserve soil moisture, suppress weeds, and regulate soil
temperature
C. To increase soil pH
D. To fertilize plants
, B. To conserve soil moisture, suppress weeds, and regulate soil
temperature
Mulch acts as a protective layer, reducing evaporation, controlling weeds,
and moderating soil temperature for plant health.
10. Which of the following is the primary factor in selecting
turfgrass for a Nevada landscape?
A. Color of the grass
B. Drought tolerance and maintenance requirements
C. Ease of mowing
D. Growth rate
B. Drought tolerance and maintenance requirements
Selecting turfgrass suited to arid climates reduces water use and
maintenance, which is crucial in Nevada landscapes.
11. What is the standard slope for proper drainage in landscape
grading?
A. 1% away from structures
B. 2–5% away from structures
C. 10% away from structures
D. Flat with no slope
B. 2–5% away from structures
A 2–5% slope ensures water drains away from buildings while preventing
erosion.
12. Which of the following fertilizers provides the most immediate
nitrogen availability for plants?
A. Organic compost
B. Urea
C. Bone meal
D. Rock phosphate
Examination Exam Practice Questions
And Correct Answers (Verified Answers)
Plus Rationales 2026 Q&A | Instant
Download Pdf
1. What is the primary purpose of a soil test before beginning a
landscaping project?
A. To estimate the cost of landscaping
B. To determine the type of plants suitable for the site
C. To locate underground utilities
D. To measure soil temperature
B. To determine the type of plants suitable for the site
Soil tests provide information about pH, nutrient content, and soil
composition, which helps in selecting plants that will thrive in the specific
conditions of the site.
2. Which of the following is the most effective method for preventing
soil erosion on a slope?
A. Planting groundcover
B. Installing a sidewalk
C. Spraying herbicide
D. Using gravel mulch
A. Planting groundcover
Groundcover plants help stabilize soil by protecting it from rainfall impact
and reducing runoff, effectively preventing erosion.
, 3. What is the recommended minimum depth for tree planting holes
relative to the root ball?
A. Same depth as the root ball
B. Twice the depth of the root ball
C. Half the depth of the root ball
D. Three times the depth of the root ball
A. Same depth as the root ball
Planting trees at the same depth as their root ball prevents root
suffocation and ensures proper establishment.
4. Which irrigation system is most efficient for conserving water in arid
climates?
A. Sprinkler irrigation
B. Surface flooding
C. Drip irrigation
D. Soaker hoses
C. Drip irrigation
Drip irrigation delivers water directly to the root zone, minimizing
evaporation and runoff, which is especially important in arid climates.
5. When installing hardscape features, which factor is most critical for
long-term stability?
A. Color of materials
B. Compaction of base material
C. Type of plants nearby
D. Height above surrounding soil
B. Compaction of base material
Properly compacted base material provides support and prevents settling
or shifting of hardscape features over time.
6. Which plant characteristic is most important for reducing
maintenance in a xeriscape design?
A. Fast growth rate
, B. High water requirement
C. Drought tolerance
D. Seasonal flowering
C. Drought tolerance
Drought-tolerant plants require minimal irrigation, which aligns with
xeriscaping principles of water conservation.
7. In landscape lighting design, what is the primary purpose of using low-
voltage lighting?
A. To increase brightness
B. To reduce energy consumption and enhance safety
C. To change plant growth patterns
D. To prevent wildlife interference
B. To reduce energy consumption and enhance safety
Low-voltage lighting is energy-efficient, reduces electrical hazards, and
provides adequate illumination for pathways and features.
8. Which of the following materials is most suitable for constructing a
retaining wall to resist lateral soil pressure?
A. Untreated timber
B. Reinforced concrete
C. Plastic sheets
D. Gravel mulch
B. Reinforced concrete
Reinforced concrete has the strength to resist lateral soil pressures and
provide long-term stability for retaining walls.
9. What is the main purpose of using mulch in landscape beds?
A. To decorate the soil
B. To conserve soil moisture, suppress weeds, and regulate soil
temperature
C. To increase soil pH
D. To fertilize plants
, B. To conserve soil moisture, suppress weeds, and regulate soil
temperature
Mulch acts as a protective layer, reducing evaporation, controlling weeds,
and moderating soil temperature for plant health.
10. Which of the following is the primary factor in selecting
turfgrass for a Nevada landscape?
A. Color of the grass
B. Drought tolerance and maintenance requirements
C. Ease of mowing
D. Growth rate
B. Drought tolerance and maintenance requirements
Selecting turfgrass suited to arid climates reduces water use and
maintenance, which is crucial in Nevada landscapes.
11. What is the standard slope for proper drainage in landscape
grading?
A. 1% away from structures
B. 2–5% away from structures
C. 10% away from structures
D. Flat with no slope
B. 2–5% away from structures
A 2–5% slope ensures water drains away from buildings while preventing
erosion.
12. Which of the following fertilizers provides the most immediate
nitrogen availability for plants?
A. Organic compost
B. Urea
C. Bone meal
D. Rock phosphate
