ISA ARBORIST CERTIFICATION Exam NEWEST 2025
COMPLETE QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS) |ALREADY
GRADED A+||BRAND NEW VERSION!!
Carbon sequestration occurs:
A. During photosynthesis
B. As emissions from vehicles are reduced
C. As sunlight combines with air pollution
D. As wood decays - CORRECT ANSWER- A. During photosynthesis
Armillaria mushrooms are often an indicator of:
A. Poor soil biology
B. Stressed trees
C. Root decay
D. All of the above - CORRECT ANSWER- D. All of the above
A landscape architect has designed a shaded nature walk behind a preschool. Which of the
following would not be a good tree quality in this space?
A. Attractive fall coloring
,B. Abundant fruiting
C. Broad, deciduous canopy
D. All of the above - CORRECT ANSWER- B. Abundant fruiting
A spring pole refers to:
A. New growth on a tree or shrub after bud break.
B. A pole saw or pruner used in spring, designed to minimize damage to sloughing bark.
C. A tree trunk that has had all its branches removed.
D. A pinned branch or small tree under tension by fallen trees. - CORRECT ANSWER- D. A
pinned branch or small tree under tension by fallen trees.
The branch collar is formed:
A. By the annual process by which tissue is layered where the branch and stem meet
B. Only in thick-barked trees, where bark has built up around a union
C. Only when branches die without falling, causing the tree to start to build a collar along the
dead branch
D. At the internodes, due to twig elongation - CORRECT ANSWER- A. By the annual process by
which tissue is layered where the branch and stem meet
One way to determine how good the drainage is in a potential planting area is to:
A. Test the soil pH
B. Use an air excavation device to loosen the soil
C. Perform a water percolation test
D. Any of the above - CORRECT ANSWER- C. Perform a water percolation test
The major water-conducting cells in angiosperms are the:
, A. Tracheids
B. Fibers
C. Parenchyma cells
D. Vessels - CORRECT ANSWER- D. Vessels
When pruning a young tree, one reason to leave temporary branches that are lower than the
lowest permanent branch is:
A. They help provide energy to the trunk.
B. They contribute to proper taper development.
C. They provide shade to the young trunk tissue.
D. All of the above - CORRECT ANSWER- D. All of the above
Which pruning system is started with a series of heading cuts, followed by annual sprout
removal?
A. Pollarding
B. Topiary
C. Natural
D. Espalier - CORRECT ANSWER- A. Pollarding
A significant number of small, fruiting bodies along a branch indicates:
A. Sapwood rot
B. Heartwood rot
C. Basal rot
D. White rot - CORRECT ANSWER- A. Sapwood rot
COMPLETE QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS) |ALREADY
GRADED A+||BRAND NEW VERSION!!
Carbon sequestration occurs:
A. During photosynthesis
B. As emissions from vehicles are reduced
C. As sunlight combines with air pollution
D. As wood decays - CORRECT ANSWER- A. During photosynthesis
Armillaria mushrooms are often an indicator of:
A. Poor soil biology
B. Stressed trees
C. Root decay
D. All of the above - CORRECT ANSWER- D. All of the above
A landscape architect has designed a shaded nature walk behind a preschool. Which of the
following would not be a good tree quality in this space?
A. Attractive fall coloring
,B. Abundant fruiting
C. Broad, deciduous canopy
D. All of the above - CORRECT ANSWER- B. Abundant fruiting
A spring pole refers to:
A. New growth on a tree or shrub after bud break.
B. A pole saw or pruner used in spring, designed to minimize damage to sloughing bark.
C. A tree trunk that has had all its branches removed.
D. A pinned branch or small tree under tension by fallen trees. - CORRECT ANSWER- D. A
pinned branch or small tree under tension by fallen trees.
The branch collar is formed:
A. By the annual process by which tissue is layered where the branch and stem meet
B. Only in thick-barked trees, where bark has built up around a union
C. Only when branches die without falling, causing the tree to start to build a collar along the
dead branch
D. At the internodes, due to twig elongation - CORRECT ANSWER- A. By the annual process by
which tissue is layered where the branch and stem meet
One way to determine how good the drainage is in a potential planting area is to:
A. Test the soil pH
B. Use an air excavation device to loosen the soil
C. Perform a water percolation test
D. Any of the above - CORRECT ANSWER- C. Perform a water percolation test
The major water-conducting cells in angiosperms are the:
, A. Tracheids
B. Fibers
C. Parenchyma cells
D. Vessels - CORRECT ANSWER- D. Vessels
When pruning a young tree, one reason to leave temporary branches that are lower than the
lowest permanent branch is:
A. They help provide energy to the trunk.
B. They contribute to proper taper development.
C. They provide shade to the young trunk tissue.
D. All of the above - CORRECT ANSWER- D. All of the above
Which pruning system is started with a series of heading cuts, followed by annual sprout
removal?
A. Pollarding
B. Topiary
C. Natural
D. Espalier - CORRECT ANSWER- A. Pollarding
A significant number of small, fruiting bodies along a branch indicates:
A. Sapwood rot
B. Heartwood rot
C. Basal rot
D. White rot - CORRECT ANSWER- A. Sapwood rot
