ISA Arborist Certification Exam — Certified Tree Care and Urban Forestry Professional Credential
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 - (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 - (ANSWER)D. Vessels
Carbon sequestration occurs:
A. During photosynthesis
B. As emissions from vehicles are reduced
C. As sunlight combines with air pollution
D. As wood decays - (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 - (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
,ISA Arborist Certification Exam — Certified Tree Care and Urban Forestry Professional Credential
D. All of the above - (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. - (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 - (ANSWER)A. By the annual process by which tissue is
layered where the branch and stem meet
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 - (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 - (ANSWER)A. Pollarding
, ISA Arborist Certification Exam — Certified Tree Care and Urban Forestry Professional Credential
A significant number of small, fruiting bodies along a branch indicates:
A. Sapwood rot
B. Heartwood rot
C. Basal rot
D. White rot - (ANSWER)A. Sapwood rot
When felling a tree, the escape path should be:
A. At a 45-degree angle, away from the direction of fall
B. At a 45-degree angle, toward the direction of fall
C. Opposite the direction of fall
D. Toward the direction of fall - (ANSWER)A. At a 45-degree angle, away from the direction of fall
All of the following are recommendations for supporting a healthy landscape except:
A. Purchasing a diverse selection of pest-resistant plant species B. Selecting healthy nursery stock
C. Pre-treating with a broad-spectrum pesticide before mulching D. All of the above - (ANSWER)C. Pre-
treating with a broad-spectrum pesticide before mulching
The cork cambium combined with the external layer of bark are collectively called the:
A. Periderm
B. Paradox
C. Cambiderm
D. Cambium - (ANSWER)A. Periderm
All of the following are deciduous conifers except:
A. Bald cypress (Taxodium distichum)
B. Tamarach (Larix laricina)
C. Dawn redwood (Metasequoia glyptostroboides)
D. Deodar cedar (Cedrus deodara) - (ANSWER)D. Deodar cedar (Cedrus deodara)
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 - (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 - (ANSWER)D. Vessels
Carbon sequestration occurs:
A. During photosynthesis
B. As emissions from vehicles are reduced
C. As sunlight combines with air pollution
D. As wood decays - (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 - (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
,ISA Arborist Certification Exam — Certified Tree Care and Urban Forestry Professional Credential
D. All of the above - (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. - (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 - (ANSWER)A. By the annual process by which tissue is
layered where the branch and stem meet
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 - (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 - (ANSWER)A. Pollarding
, ISA Arborist Certification Exam — Certified Tree Care and Urban Forestry Professional Credential
A significant number of small, fruiting bodies along a branch indicates:
A. Sapwood rot
B. Heartwood rot
C. Basal rot
D. White rot - (ANSWER)A. Sapwood rot
When felling a tree, the escape path should be:
A. At a 45-degree angle, away from the direction of fall
B. At a 45-degree angle, toward the direction of fall
C. Opposite the direction of fall
D. Toward the direction of fall - (ANSWER)A. At a 45-degree angle, away from the direction of fall
All of the following are recommendations for supporting a healthy landscape except:
A. Purchasing a diverse selection of pest-resistant plant species B. Selecting healthy nursery stock
C. Pre-treating with a broad-spectrum pesticide before mulching D. All of the above - (ANSWER)C. Pre-
treating with a broad-spectrum pesticide before mulching
The cork cambium combined with the external layer of bark are collectively called the:
A. Periderm
B. Paradox
C. Cambiderm
D. Cambium - (ANSWER)A. Periderm
All of the following are deciduous conifers except:
A. Bald cypress (Taxodium distichum)
B. Tamarach (Larix laricina)
C. Dawn redwood (Metasequoia glyptostroboides)
D. Deodar cedar (Cedrus deodara) - (ANSWER)D. Deodar cedar (Cedrus deodara)
