ISA Certified Arborist Chapter 12 (Tree Assessment and Risk
Management
Correct Questions And
Answers
1. List the three components of risk assessment. potential for failure
environment that may
contribute to failure
potential target
2. By definition, if there is no , a tree target
cannot pose a risk.
3. When performing a tree assessment, it is impor- systematic
tant to develop and stick to a process.
4. For structural strength, branches should smaller
be
in diameter than their parent
limbs or trunk.
white rot
5. fungi primarily decay the
lignin within and between cell walls in
the wood. included bark
6. Codominant stems often have
within the branch union, making them
struc- turally less stable. taper
7. Trees that have grown in dense shade such
as a forest tend to have long, straight
stems with little reaction wood
.
8. Trees often produce ,
providing more stability to
compensate for lean.
9. Brown rot fungi primarily decay the , leav- cellulose
1/
7
, ISA Certified Arborist Chapter 12 (Tree Assessment and Risk
Management
Correct Questions And
Answers
ing behind the stiff lignin and thereby
reducing the bending strength of the tree.
2/
7
Management
Correct Questions And
Answers
1. List the three components of risk assessment. potential for failure
environment that may
contribute to failure
potential target
2. By definition, if there is no , a tree target
cannot pose a risk.
3. When performing a tree assessment, it is impor- systematic
tant to develop and stick to a process.
4. For structural strength, branches should smaller
be
in diameter than their parent
limbs or trunk.
white rot
5. fungi primarily decay the
lignin within and between cell walls in
the wood. included bark
6. Codominant stems often have
within the branch union, making them
struc- turally less stable. taper
7. Trees that have grown in dense shade such
as a forest tend to have long, straight
stems with little reaction wood
.
8. Trees often produce ,
providing more stability to
compensate for lean.
9. Brown rot fungi primarily decay the , leav- cellulose
1/
7
, ISA Certified Arborist Chapter 12 (Tree Assessment and Risk
Management
Correct Questions And
Answers
ing behind the stiff lignin and thereby
reducing the bending strength of the tree.
2/
7
