ISA ARBORIST-CHAPTER 12 TREE ASSESSMENT AND RISK MANAGEMENT EXAM 2025 QUESTIONS AND ANSWERS

ISA ARBORIST-CHAPTER 12 TREE
ASSESSMENT AND RISK
MANAGEMENT EXAM 2025 QUESTIONS
AND ANSWERS




Air excavation device - ANS Device that directs a jet of highly compressed air to excavate soil.
Used within the root zone of trees to avoid or minimize damage to roots, or near underground
structures such as pipes and wires to avoid or minimize damage to them.



Basal rot - ANS Decay of the lower trunk, trunk flare, or buttress roots. Also called butt rot.



Bracket - ANS British English term for the fruiting body of a decay fungus. Conk.



Brown rot - ANS Fungal wood rot characterized by the breakdown of cellulose.



Causation in fact - ANS In determining legal liability, the test of the proximate cause and
foreseeability of the consequences.



Cavity - ANS Open or closed hollow within the tree stem, usually associated with decay.



Codominant stem - ANS Forked stems nearly the same size in diameter, arising from a
common junction and lacking a normal branch union.


1|P a g e C o p y r i g h t © 2 0 2 5 T H E B R I G H T A L L R I G H T S R E S E R V E D