ISA Certified Arborist Chapter 12 (Tree Assessment
and Risk Management) /25 Questions With Verified
Answers (Rated A+)
Quiz :List the three components of risk assessment. - √Answer :potential for
failure
environment that may contribute to failure
potential target
Quiz :By definition, if there is no _______, a tree cannot pose a risk. -
√Answer :target
Quiz :When performing a tree assessment, it is important to develop and stick
to a _______ process. - √Answer :systematic
Quiz :For structural strength, branches should be _______ in diameter than
their parent limbs or trunk. - √Answer :smaller
Quiz :_______ _______ fungi primarily decay the lignin within and between
cell walls in the wood. - √Answer :white rot
Quiz :Codominant stems often have _______ ______ within the branch union,
making them structurally less stable. - √Answer :included bark
Quiz :Trees that have grown in dense shade such as a forest tend to have long,
straight stems with little _______. - √Answer :taper
Quiz :Trees often produce _______ _______, providing more stability to
compensate for lean. - √Answer :reaction wood
Quiz :Brown rot fungi primarily decay the _______, leaving behind the stiff
lignin and thereby reducing the bending strength of the tree. -
√Answer :cellulose
Quiz :Decay located in the lower trunk and/or base of the tree is referred to as
_______ _______. - √Answer :basal rot (butt rot)
Quiz :In recent years, a number of more advanced _______ _______ _______
have been developed to help arborists determine the presence and extent of
decay inside trees. - √Answer :decay detection devices
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