ISA Certified Arborist Chapter 12 (Tree
Assessment and Risk Management) questions
and answers 2024\2025 A+ Grade
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
Assessment and Risk Management) questions
and answers 2024\2025 A+ Grade
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
