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ISA Certified Arborist VIP Practice Exam

CATS — The ISA Certified Arborist exam is administered by the International Society of Arboriculture (ISA); it consists of approximately 200 multiple-choice questions over 4 hours, with a passing score around 76%, and covers tree biology, pruning, soil management, diagnosis, risk assessment, and safe work practices per ANSI A300 and Z133 standards.

31
Questions
240m
Time Limit
76.00%
To Pass
Question 1 of 31👑 VIP

A homeowner in Albuquerque notices that her 30-year-old Rio Grande cottonwood (Populus deltoides wislizeni) has developed a vertical crack running 6 feet up the main trunk following a late-spring freeze. The crack closes during the day and opens slightly at night. Which of the following BEST describes this condition and its primary cause?

Questions 2–31 and full explanations are VIP-exclusive.