ISA Arborist Exam| Practice
Questions, Answers & Detailed
Rationales
2026-2027
, arboriculture Practice and study of the care of trees and other woody plants in the landscape
Best Management Practices Best-available, industry-recognized courses of action, in consideration of the
benefits and limitations, based on scientific research and current knowledge.
Carbon squestration Capture of carbon from atmosphere into long term storage. -- Capturing
atmospheric carbon dioxide via photosynthesis
Four Benefits of Trees Environmental, Economic, Aesthetic, Social
Environmental benefits of trees Improve air quality, carbon sequestration, Energy conservation, decreased storm
water runoff, erosion control, increased wildlife diversity
Economic Benefits of Trees decreased heating and cooling costs, increased property value, windbreak and
shade decrease maintenance cost
Social Benefits of Trees Decrease stress, improve psychological wellbeing, decrease certain crimes
Costs of trees Planting, maintenance, management
Trees are assets unless... they are improperly cared for, then they become
liabilities
Urban Forestry Management of naturally occurring and planted trees and associated plants in
urban areas.
Urban Forester (city forester) is responsible for Management of greenspaces on public land in communities
Methods that quantify the value of trees Realestate value, Benefit based, Cost benefit analysis, CTLA method
Realestate value Compares property of interest with other properties that are similar (both with and
without trees)
cost-benefit analysis Based on the trees measurements, species, condition and location (ex. I-tree)
Council of Tree and Landscape Appraisers Replacement cost and trunk formula method
(CTLA) Method
Questions, Answers & Detailed
Rationales
2026-2027
, arboriculture Practice and study of the care of trees and other woody plants in the landscape
Best Management Practices Best-available, industry-recognized courses of action, in consideration of the
benefits and limitations, based on scientific research and current knowledge.
Carbon squestration Capture of carbon from atmosphere into long term storage. -- Capturing
atmospheric carbon dioxide via photosynthesis
Four Benefits of Trees Environmental, Economic, Aesthetic, Social
Environmental benefits of trees Improve air quality, carbon sequestration, Energy conservation, decreased storm
water runoff, erosion control, increased wildlife diversity
Economic Benefits of Trees decreased heating and cooling costs, increased property value, windbreak and
shade decrease maintenance cost
Social Benefits of Trees Decrease stress, improve psychological wellbeing, decrease certain crimes
Costs of trees Planting, maintenance, management
Trees are assets unless... they are improperly cared for, then they become
liabilities
Urban Forestry Management of naturally occurring and planted trees and associated plants in
urban areas.
Urban Forester (city forester) is responsible for Management of greenspaces on public land in communities
Methods that quantify the value of trees Realestate value, Benefit based, Cost benefit analysis, CTLA method
Realestate value Compares property of interest with other properties that are similar (both with and
without trees)
cost-benefit analysis Based on the trees measurements, species, condition and location (ex. I-tree)
Council of Tree and Landscape Appraisers Replacement cost and trunk formula method
(CTLA) Method
