Exam Questions And Correct Answers

CA D49 Tree Service Contractor Exam Questions And Correct Answers (Verified Answers) Plus Rationale2026 Q&A| Instant Download Pdf

• What is the minimum clearance required between a tree and overhead

electrical lines before pruning can begin?

• 2 feet
• 5 feet
• 10 feet
• 15 feet
• 5 feet

Rationale: A minimum of 5 feet clearance is required for safe

pruning near overhead electrical lines to prevent accidental contact.

• Which type of tree is most susceptible to disease when improperly

pruned?

• Oak
• Maple
• Pine
• All of the above
• All of the above

Rationale: All tree species are susceptible to disease if pruning cuts

are not properly made, particularly at the wrong time of year.

• When is the optimal time to prune most deciduous trees?
• Early spring before leaf-out
• Mid-summer
• Late autumn
• Winter
• Early spring before leaf-out 1 / 3

Rationale: Pruning in early spring promotes strong growth and

allows the tree to heal quickly.

• Which piece of equipment is essential for climbing large trees safely?
• Pole saw
• Chainsaw
• Climbing harness and rope
• Hedge trimmer
• Climbing harness and rope

Rationale: A climbing harness and rope are critical for safety when

ascending and working in large trees.

• What is the first step in assessing a tree for removal?
• Determine the tree’s age
• Conduct a risk assessment
• Start cutting branches
• Notify neighbors
• Conduct a risk assessment

Rationale: Risk assessment identifies hazards such as nearby power

lines, structures, and the tree’s structural integrity.

• What is the correct method to remove a dead limb from a tree?
• Cut from the bottom only
• Cut from the top only
• Use a three-cut method
• Use a chainsaw without precautions
• Use a three-cut method

Rationale: The three-cut method prevents bark tearing and ensures

safe removal of large limbs.

• Which of the following is a common symptom of root rot?
• Leaves turning yellow
• Wilting during dry periods
• Mushrooms at the base
• All of the above
• All of the above

Rationale: Root rot often shows multiple symptoms including leaf

discoloration, wilting, and fungal growth at the base.

• What is the most effective way to prevent tree damage during

construction?

• Water daily 2 / 3

• Apply fertilizer
• Install root protection zones
• Remove all nearby trees
• Install root protection zones

Rationale: Root protection zones prevent soil compaction and damage

to roots during construction activities.

• When using a chainsaw on a tree limb overhead, what is a key safety

precaution?

• Stand directly under the limb
• Cut from a ladder
• Ensure a clear escape path
• Hold the chainsaw with one hand
• Ensure a clear escape path

Rationale: Having a clear escape path prevents injury if the limb falls

unpredictably.

• What is the purpose of cabling and bracing in tree management?
• Increase leaf production
• Reduce risk of branch failure
• Promote root growth
• Accelerate flowering
• Reduce risk of branch failure

Rationale: Cabling and bracing provide structural support to weak

limbs and prevent failure.

• Which type of soil is most prone to compaction damage to tree

roots?

• Sandy
• Clay
• Loam
• Gravel
• Clay

Rationale: Clay soils compact easily, restricting root growth and

water penetration.

• What is the correct depth to water a mature tree during a dry

season?

• 2–3 inches
• 6–8 inches
• 12–18 inches
• / 3