Tree Risk Assessment Qualification (TRAQ)
Practice Examination Newest 2025 – 2026
Questions From Actual Exams Complete
Questions And Correct Detailed Answers
(Verified Answers) |Already Graded A+||Brand
New!!
Content covered (most frequently tested domains): Tree
Biology and Structure, Tree Defects and Failure Potential,
Site and Target Assessment, Load Factors (wind, soil,
weather), Risk Rating System, Inspection Levels, Mitigation
Options, Documentation and Reporting, Tree Protection
Zones, Root and Soil Issues, Cabling and Bracing Principles,
Utility and Public Safety Considerations, Professional
Ethics.
1. Which part of the tree primarily transports water and dissolved minerals from the roots to
the leaves?
A. Phloem
B. Cambium
C. Xylem
D. Cortex
Correct Answer: Xylem
Xylem tissue conducts water and minerals upward from the roots to the leaves through
transpiration pull and cohesion-tension forces.
2. What is the most common structural defect leading to tree failure in urban trees?
A. Leaf discoloration
B. Deadwood in canopy
C. Included bark at branch unions
D. Thin bark
Correct Answer: Included bark at branch unions
,Included bark forms when bark becomes embedded between two stems, preventing proper wood
attachment and significantly weakening the union.
3. In tree risk assessment, the term “target” refers to:
A. The location of the trunk flare
B. The object that could be struck by tree failure
C. The tree species being evaluated
D. The soil condition around roots
Correct Answer: The object that could be struck by tree failure
A target can be people, vehicles, buildings, or infrastructure that may be impacted if part of the
tree fails.
4. What inspection level involves walking or driving past a tree and making a quick
observation without detailed analysis?
A. Level 1 Limited Visual Assessment
B. Level 2 Basic Assessment
C. Level 3 Advanced Assessment
D. Level 4 Diagnostic Assessment
Correct Answer: Level 1 Limited Visual Assessment
Level 1 assessments are brief visual inspections typically used during surveys or drive-by
evaluations.
5. A cavity in the trunk becomes structurally concerning when:
A. It reaches the bark
B. It exceeds one-third of the trunk diameter
C. It is visible from a distance
D. It produces sap flow
Correct Answer: It exceeds one-third of the trunk diameter
Large cavities reduce the amount of sound wood available to resist bending forces, increasing
failure likelihood.
6. Root plate movement during wind events is an indicator of:
A. Normal growth
B. Imminent structural failure risk
C. Healthy soil structure
D. Proper anchorage
Correct Answer: Imminent structural failure risk
Movement of the root plate indicates compromised anchorage and possible uprooting.
, 7. Which root condition most significantly affects tree stability?
A. Fine root dieback
B. Root circling
C. Severed structural roots
D. Root hairs
Correct Answer: Severed structural roots
Structural roots anchor the tree. Cutting them greatly increases the chance of tree failure.
8. The purpose of cabling in tree management is to:
A. Improve root growth
B. Reduce mechanical stress on weak unions
C. Increase photosynthesis
D. Prevent insect infestations
Correct Answer: Reduce mechanical stress on weak unions
Cables redistribute loads between stems to decrease stress and reduce failure risk.
9. Which environmental factor most increases the likelihood of whole-tree failure?
A. Low sunlight
B. High wind load
C. Mild rainfall
D. Cool temperatures
Correct Answer: High wind load
Wind exerts strong mechanical forces on the canopy, increasing bending stress and root plate
loading.
10. Which tool is commonly used to detect internal trunk decay?
A. Clinometer
B. Resistograph
C. Soil probe
D. Measuring tape
Correct Answer: Resistograph
A resistograph drills a fine needle into wood and measures resistance to detect internal decay.
11. What is the main function of the cambium layer?
A. Storage of nutrients
B. Production of new vascular tissue
C. Anchoring roots
D. Supporting branches
Practice Examination Newest 2025 – 2026
Questions From Actual Exams Complete
Questions And Correct Detailed Answers
(Verified Answers) |Already Graded A+||Brand
New!!
Content covered (most frequently tested domains): Tree
Biology and Structure, Tree Defects and Failure Potential,
Site and Target Assessment, Load Factors (wind, soil,
weather), Risk Rating System, Inspection Levels, Mitigation
Options, Documentation and Reporting, Tree Protection
Zones, Root and Soil Issues, Cabling and Bracing Principles,
Utility and Public Safety Considerations, Professional
Ethics.
1. Which part of the tree primarily transports water and dissolved minerals from the roots to
the leaves?
A. Phloem
B. Cambium
C. Xylem
D. Cortex
Correct Answer: Xylem
Xylem tissue conducts water and minerals upward from the roots to the leaves through
transpiration pull and cohesion-tension forces.
2. What is the most common structural defect leading to tree failure in urban trees?
A. Leaf discoloration
B. Deadwood in canopy
C. Included bark at branch unions
D. Thin bark
Correct Answer: Included bark at branch unions
,Included bark forms when bark becomes embedded between two stems, preventing proper wood
attachment and significantly weakening the union.
3. In tree risk assessment, the term “target” refers to:
A. The location of the trunk flare
B. The object that could be struck by tree failure
C. The tree species being evaluated
D. The soil condition around roots
Correct Answer: The object that could be struck by tree failure
A target can be people, vehicles, buildings, or infrastructure that may be impacted if part of the
tree fails.
4. What inspection level involves walking or driving past a tree and making a quick
observation without detailed analysis?
A. Level 1 Limited Visual Assessment
B. Level 2 Basic Assessment
C. Level 3 Advanced Assessment
D. Level 4 Diagnostic Assessment
Correct Answer: Level 1 Limited Visual Assessment
Level 1 assessments are brief visual inspections typically used during surveys or drive-by
evaluations.
5. A cavity in the trunk becomes structurally concerning when:
A. It reaches the bark
B. It exceeds one-third of the trunk diameter
C. It is visible from a distance
D. It produces sap flow
Correct Answer: It exceeds one-third of the trunk diameter
Large cavities reduce the amount of sound wood available to resist bending forces, increasing
failure likelihood.
6. Root plate movement during wind events is an indicator of:
A. Normal growth
B. Imminent structural failure risk
C. Healthy soil structure
D. Proper anchorage
Correct Answer: Imminent structural failure risk
Movement of the root plate indicates compromised anchorage and possible uprooting.
, 7. Which root condition most significantly affects tree stability?
A. Fine root dieback
B. Root circling
C. Severed structural roots
D. Root hairs
Correct Answer: Severed structural roots
Structural roots anchor the tree. Cutting them greatly increases the chance of tree failure.
8. The purpose of cabling in tree management is to:
A. Improve root growth
B. Reduce mechanical stress on weak unions
C. Increase photosynthesis
D. Prevent insect infestations
Correct Answer: Reduce mechanical stress on weak unions
Cables redistribute loads between stems to decrease stress and reduce failure risk.
9. Which environmental factor most increases the likelihood of whole-tree failure?
A. Low sunlight
B. High wind load
C. Mild rainfall
D. Cool temperatures
Correct Answer: High wind load
Wind exerts strong mechanical forces on the canopy, increasing bending stress and root plate
loading.
10. Which tool is commonly used to detect internal trunk decay?
A. Clinometer
B. Resistograph
C. Soil probe
D. Measuring tape
Correct Answer: Resistograph
A resistograph drills a fine needle into wood and measures resistance to detect internal decay.
11. What is the main function of the cambium layer?
A. Storage of nutrients
B. Production of new vascular tissue
C. Anchoring roots
D. Supporting branches
