ISA Certified Arborist · International · International Society of Arboriculture
Original practice questions written to the published syllabus · not past papersTrees and forests where people live: urban forest planning, species choice, planting and care of individual trees, tree risk assessment and the benefits of urban trees.
In the exams: ICAR AICE-JRF 59 Unit 11 (urban forestry: choice of species, design, management); ICAR AIEEA-PG Group 09 (urban forestry); ISA Certified Arborist; ICF Chartered Arboriculturist
ISA Certified Arborist
Tree biology, identification and selection, soil management, installation and establishment, pruning, diagnosis and treatment, tree risk assessment, tree protection, urban forestry and safety (climbing, rigging, electrical hazards).
How our questions for ISA Certified Arborist spread across the units of Urban Forestry & Arboriculture. Difficulty: 17 easy, 30 medium, 17 hard.
| Pruning standards and practices | 12 | |
| Tree planting and establishment in urban soils | 10 | |
| Tree biomechanics and tree risk assessment | 10 | |
| Arboricultural safety and climbing | 9 | |
| Tree protection on construction sites | 7 | |
| Urban tree inventory and canopy-cover assessment | 6 | |
| Urban tree pests, diseases and disorders | 5 | |
| Urban forest concepts and benefits | 3 | |
| Species choice and design for streets, parks and green belts | 1 | |
| Urban forest management plans and policy | 1 |
Choose an answer, then open the working. Each explanation says why the right answer is right and why the others are not.
The emerald ash borer and Dutch elm disease illustrate the risk of:
C. Relying on few species
Diversity spreads risk.
Urban soils are typically:
B. Compacted, low in humus
Also alkaline, contaminated, sealed.
Stakes on newly planted trees should usually be removed after about:
B. One year
Movement develops taper and strength.
Circling roots on container stock should be:
B. Cut or teased out
Otherwise they may girdle the tree.
The US standard for tree pruning is:
D. ANSI A300
Z133 is safety; BS 5837 is construction.
The UK standard for tree work recommendations is:
C. BS 3998:2010
BS 3998:2010 covers tree work recommendations.
In the CODIT model, the strongest barrier is:
A. Wall 4, the barrier zone
Formed by the cambium after wounding.
Most tree roots are found in the top:
C. 30 to 60 cm of soil
And extend beyond the crown edge.
The US safety standard for arboricultural operations is:
C. ANSI Z133
ANSI Z133 is safety; A300 is pruning.
Climbing spikes should be used:
B. Only for removals or rescue
Spikes wound retained trees.
Ten here, 64 in the app. The Laisha app has every practice question we have written to ISA Certified Arborist in this subject, marked as you go, with timed papers, a jump-to-unanswered list and a certificate when you pass at 70 per cent.
Free for ten days, then one subscription of US$10 a month. We would rather say so here than have you find it later.
An AI operating system for agriculture: free guides, manuals and tools written for every country.