Page 1 of 105
ISA Certified Arborist ACTUAL EXAM QUESTIONS AND
CORRECT VERIFIED SOLUTIONS LATEST UPDATE THIS YEAR –
JUST RELEASED
ISA Certified Arborist Exam - ANSWER-Exam Coverage
The exam coverage includes the fundamental knowledge and professional practices required for
the International Society of Arboriculture Certified Arborist Exam. It focuses on tree biology,
identification and selection, soil management, water management, tree nutrition, pruning
techniques, and diagnosis and treatment of tree diseases and pests. The exam also assesses
understanding of tree risk assessment, safe work practices, planting and establishment, urban
forestry principles, and proper tree care practices to promote tree health and safety in
residential, commercial, and municipal environments
QUESTION: 7-Strand, Common Grade Cable - ANSWER-Steel-cable construction in which seven
strands are twisted together in a spiral pattern. Used to add supplemental structural support to
trees.
, Page 2 of 105
QUESTION: 12-Strand Rope - ANSWER-For arborist ropes, a braided rope consisting of 12
strands. Most are coreless.
QUESTION: What are the two types of 12 strand ropes? - ANSWER-Tight braid and loose braid.
QUESTION: 3-Strand Rope - ANSWER-Rope construction in which three strands are twisted
together in a spiral pattern.
QUESTION: Tight Braid - ANSWER-It is not easily spliceable, used for climbing and rigging lines.
QUESTION: Loose Braid - ANSWER-Easily spliceable braid, commonly used for slings.
QUESTION: 16-Strand Rope - ANSWER-For arborist ropes, a braided rope that has a 16-strand,
load-bearing cover and a filler core that is not significant in load carrying.
QUESTION: 24-Strand Rope - ANSWER-For arborist ropes, a braided rope that has a 24-strand
cover and is available in double braid or kernmantle construction.
, Page 3 of 105
QUESTION: Abiotic Disorder - ANSWER-Plant malady caused by nonliving, environmental, or
man-made agents.
QUESTION: Abscission Zone - ANSWER-Area at the base of the petiole where cellular breakdown
leads to leaf and fruit drop.
QUESTION: Absorbing Roots - ANSWER-Fine, fibrous roots that take up water and minerals.
Most are within the top 12 inches of soil.
QUESTION: Access Line - ANSWER-1) Second climbing line hung in a tree in case it is needed to
reach a victim in an emergency. 2) Climbing line installed in a tree to gain access to, but not use
to work in, the tree.
QUESTION: Access Route - ANSWER-Defined entrance and exit route for a property during
construction, tree work, or landscape operations.
, Page 4 of 105
QUESTION: Acclimation - ANSWER-Physiological adaption process of plants and other living
organisms to a climate or environment different from their native environment or where
originally grown.
QUESTION: Actinomycetes - ANSWER-Group of soil bacteria resembling fungi. Actinomycetes
play a role in the decomposition of organic matter and the release of mineral elements.
QUESTION: Action Threshold - ANSWER-Pest population or plant damage level that requires
action to prevent irreversible or unacceptable physiological and/or aesthetic harm.
QUESTION: Acute - ANSWER-Disorder or disease that occurs suddenly or over a short period of
time. Contrast with chronic.
QUESTION: Adaptability - ANSWER-Genetic ability of plants and other living organisms to adjust
or acclimate to different environments.
QUESTION: Adventitious Bud - ANSWER-Bud arising from a place other than a leaf axil or shoot
tip, usually as a result of hormonal triggers.
ISA Certified Arborist ACTUAL EXAM QUESTIONS AND
CORRECT VERIFIED SOLUTIONS LATEST UPDATE THIS YEAR –
JUST RELEASED
ISA Certified Arborist Exam - ANSWER-Exam Coverage
The exam coverage includes the fundamental knowledge and professional practices required for
the International Society of Arboriculture Certified Arborist Exam. It focuses on tree biology,
identification and selection, soil management, water management, tree nutrition, pruning
techniques, and diagnosis and treatment of tree diseases and pests. The exam also assesses
understanding of tree risk assessment, safe work practices, planting and establishment, urban
forestry principles, and proper tree care practices to promote tree health and safety in
residential, commercial, and municipal environments
QUESTION: 7-Strand, Common Grade Cable - ANSWER-Steel-cable construction in which seven
strands are twisted together in a spiral pattern. Used to add supplemental structural support to
trees.
, Page 2 of 105
QUESTION: 12-Strand Rope - ANSWER-For arborist ropes, a braided rope consisting of 12
strands. Most are coreless.
QUESTION: What are the two types of 12 strand ropes? - ANSWER-Tight braid and loose braid.
QUESTION: 3-Strand Rope - ANSWER-Rope construction in which three strands are twisted
together in a spiral pattern.
QUESTION: Tight Braid - ANSWER-It is not easily spliceable, used for climbing and rigging lines.
QUESTION: Loose Braid - ANSWER-Easily spliceable braid, commonly used for slings.
QUESTION: 16-Strand Rope - ANSWER-For arborist ropes, a braided rope that has a 16-strand,
load-bearing cover and a filler core that is not significant in load carrying.
QUESTION: 24-Strand Rope - ANSWER-For arborist ropes, a braided rope that has a 24-strand
cover and is available in double braid or kernmantle construction.
, Page 3 of 105
QUESTION: Abiotic Disorder - ANSWER-Plant malady caused by nonliving, environmental, or
man-made agents.
QUESTION: Abscission Zone - ANSWER-Area at the base of the petiole where cellular breakdown
leads to leaf and fruit drop.
QUESTION: Absorbing Roots - ANSWER-Fine, fibrous roots that take up water and minerals.
Most are within the top 12 inches of soil.
QUESTION: Access Line - ANSWER-1) Second climbing line hung in a tree in case it is needed to
reach a victim in an emergency. 2) Climbing line installed in a tree to gain access to, but not use
to work in, the tree.
QUESTION: Access Route - ANSWER-Defined entrance and exit route for a property during
construction, tree work, or landscape operations.
, Page 4 of 105
QUESTION: Acclimation - ANSWER-Physiological adaption process of plants and other living
organisms to a climate or environment different from their native environment or where
originally grown.
QUESTION: Actinomycetes - ANSWER-Group of soil bacteria resembling fungi. Actinomycetes
play a role in the decomposition of organic matter and the release of mineral elements.
QUESTION: Action Threshold - ANSWER-Pest population or plant damage level that requires
action to prevent irreversible or unacceptable physiological and/or aesthetic harm.
QUESTION: Acute - ANSWER-Disorder or disease that occurs suddenly or over a short period of
time. Contrast with chronic.
QUESTION: Adaptability - ANSWER-Genetic ability of plants and other living organisms to adjust
or acclimate to different environments.
QUESTION: Adventitious Bud - ANSWER-Bud arising from a place other than a leaf axil or shoot
tip, usually as a result of hormonal triggers.
