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ISA Certified Arborist VIP Practice Exam II
Certified Arborist Test Practice Test — The ISA Certified Arborist exam is administered by the International Society of Arboriculture (ISA); it contains 200 multiple-choice questions with a 4-hour time limit, covers 12 knowledge domains from the ISA Arborist Certification Study Guide, and requires approximately 75% correct answers to pass (passing score varies slightly by exam form).
29
Questions
240m
Time Limit
75.00%
To Pass
Question 1 of 29👑 VIP
An arborist is evaluating a mature red oak (Quercus rubra) that has developed a large co-dominant stem originating from a branch union approximately 4 meters above grade. The union displays significant included bark visible on one side. Which characteristic of this union most directly increases the likelihood of structural failure?
Questions 2–29 and full explanations are VIP-exclusive.