ISA Certified Arborist Chapter 12 (Tree Assessment and Risk Management) Latest Updated Exam Q&A
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Module
ISA
Institution
ISA
ISA Certified Arborist Chapter 12 (Tree
Assessment and Risk Management)
Latest Updated Exam Q&A
List the three components of risk assessment. - CORRECT ANSWER-potential for
failure
environment that may contribute to failure
potential target
By definition, if there is no _______, a tree ca...
ISA Certified Arborist Chapter 12 (Tree
Assessment and Risk Management)
Latest Updated Exam Q&A
List the three components of risk assessment. - CORRECT ANSWER-potential for
failure
environment that may contribute to failure
potential target
By definition, if there is no _______, a tree cannot pose a risk. - CORRECT ANSWER-
target
When performing a tree assessment, it is important to develop and stick to a _______
process. - CORRECT ANSWER-systematic
For structural strength, branches should be _______ in diameter than their parent limbs
or trunk. - CORRECT ANSWER-smaller
_______ _______ fungi primarily decay the lignin within and between cell walls in the
wood. - CORRECT ANSWER-white rot
Codominant stems often have _______ ______ within the branch union, making them
structurally less stable. - CORRECT ANSWER-included bark
Trees that have grown in dense shade such as a forest tend to have long, straight
stems with little _______. - CORRECT ANSWER-taper
Trees often produce _______ _______, providing more stability to compensate for lean.
- CORRECT ANSWER-reaction wood
Brown rot fungi primarily decay the _______, leaving behind the stiff lignin and thereby
reducing the bending strength of the tree. - CORRECT ANSWER-cellulose
Decay located in the lower trunk and/or base of the tree is referred to as _______
_______. - CORRECT ANSWER-basal rot (butt rot)
In recent years, a number of more advanced _______ _______ _______ have been
developed to help arborists determine the presence and extent of decay inside trees. -
CORRECT ANSWER-decay detection devices
True/False - A tree may appear to be solid and structurally sound, and may have a
thick, green canopy, yet can have significant decay inside. - CORRECT ANSWER-true
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