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ISA Arborist Certification Final Practice
Exams
Compaction during construction has reduced the amount of oxygen available for a tree's root system. What mitigation technique is least likely to be effective? (A) Vertical mulching (B) Fertilizing (C) Radial trenching (D) Air excavator - ✔️ ✔ Correct Answer B Which of the following risk characteristics are commonly associated specifically with urban areas? (A) Compaction due to foot traffic (B) Surrounding tree failure (C) Tree lean
(D) Branches and stems equal in size - ✔️ ✔ Correct Answer A
Causation in fact is the linking of an injury or damage related to the failure of a tree to which of the following? (A) Code compliance (B) Action of the defendant (C) Action of the property owner (D) "Act of God" - ✔️ ✔ Correct Answer B What is not a path of failure for a tree that is facing a wind event? (A) Soil shear (B) Root tensile break (C) Root compressive failure (D) Trunk rotation - ✔️ ✔ Correct Answer C A tree's bark on a limb is damaged by contact with machinery during construction. What is the most appropriate recommended action?
(C) Conifers (D) Any species that would grow above the wires - ✔️ ✔ Correct Answer D What is the ideal time to prune trees which have heavy sap flow? (A) Spring (B) Fall (C) Winter (D) Any time is acceptable - ✔️ ✔ Correct Answer D
What is not one of the four requirements for a tree disease? (A) Susceptible host (B) Existing deformity (C) Pathogenic organism (D) Suitable environment - ✔️ ✔ Correct Answer B
A tree is to be planted close to a newly built retaining wall for beautification. What habit is most likely appropriate for the selection of the tree. (A) Pyramidal (B) Upright (C) Weeping (D) Spread - ✔️ ✔ Correct Answer B Hardiness refers to a plant's ability to survive which of the following? (A) Drought(B) Low temperatures (C) Impact(D) Shade - ✔️ ✔ Correct Answer B What tree can be identified as having palmately compound leaves? (A) Buckeye (B) Ash(C) Ailanthus (D) Walnut - ✔ ️ ✔ Correct Answer C
What statement is true below regarding deciduous trees? (A) Allows light in the summer and allows light in the winter (B) Allows light in the summer and blocks light in the winter
(A) American elm (B) Cottonwood (C) Live oak(D) Willow - ✔️ ✔ Correct Answer C The first part of a tree's scientific name indicates which of the following? (A) Family(B) Order(C) Genus(D) Common name - ✔ ️ ✔ Correct Answer C Sweating is a pre-planting procedure often required for which of the following nursery stock types? (A) Bare root (B) Containerized (C) Container grown (D) balled and bur lapped - ✔️ ✔ Correct Answer A When is it acceptable to plant a nursery stock tree without removal of the root protection?
(A) Biodegradable container (B) Synthetic burlap (C) Biodegradable burlap (D) Wire basket burlap - ✔ ️ ✔ Correct Answer A
What is the minimum number of primary roots that must be buried 1 to 3 inches below the soil surface when transferring nursery stock? (A) 1 (B) 2 (C) 3 (D) 4 - ✔️ ✔ Correct Answer B During tree installation, it is determined that there are 2 inches of soil over the structural roots. The root ball is measured to be 14 inches deep. How deep should the planting hole be? (A) 14 (B) 13 (C) 12 (D) 10 - ✔ ️ ✔ Correct Answer C How far above ground shall tree caliper be measured for trees less than 4 inches in diameter? (A) 2 (B) 6 (C) 8 (D) 10 - ✔️ ✔ Correct Answer B
What is the most appropriate approach to the amount of pruning to be completed for newly planted trees? (A) Only limbs that are broken or damaged (B) Up to 1/3 of branches on a regular basis (C) At least half of branches on a periodic basis (D) Pruning is not recommended for younger plantings - ✔️ ✔ Correct Answer A
Eye screws used to install guy wires on larger trees may be left in place in which of the following situations? (A) If not able to be removed with the guy wires (B) Only a maximum of two eye screws may be left in place (C) Must be left in place (D) Must always be removed - ✔️ ✔ Correct Answer A
What term below is universally acknowledged in standards as denoting a mandatory requirement? (A) Ought to (B) May (C) Should (D) Shall - ✔️ ✔ Correct Answer D
What personal protective equipment is specifically required only for the use of chainsaws? (A) Hard hat (B) Protective face shield (C) Heavy work boots (D) Leg chaps - ✔️ ✔ Correct Answer D
What is the preferred retreat path for a felling tree operation? (A) 45-degrees off the opposite fell path
(A) 1 (B) 2 (C) 3 (D) 4 - ✔️ ✔ Correct Answer D
What portion of a chainsaw will potentially cause a kickback if contacted by an object? (A) Lower portion of base (B) Upper portion of base (C) Lower portion of tip D) Upper portion of tip - ✔ ️ ✔ Correct Answer D What is the minimum hinge angular dimension for properly felling a tree? (A) 45° (B) 60° (C) 70° (D) 90° - ✔️ ✔ Correct Answer C What is a disadvantage of 3-strand type rope? (A) Cost (B) Ability to run through a pully (C) Ability to elongate
(D) Tendency to twist - ✔️ ✔ Correct Answer D
What safety factor is typically used for arborist rigging? (A) 2 (B) 5 (C) 10 (D) 15 - ✔️ ✔ Correct Answer B What hazard is a specific concern related to the removal of palm trees? (A) Wet ground (B) Reduced sunlight (C) Sloughing
(D) Brittle failure - ✔️ ✔ Correct Answer C What is the first step in urgent care procedures? (A) Begin CPR if necessary (B) Assess the safety of the surroundings (C) Check for a pulse
(A) Even with the apex of the notch (B) Above the apex of the notch (C) Below the apex of the notch (D) Even with the top of the notch - ✔ ️ ✔ Correct Answer B
A rope has a tensile limit of 15,000 lbs. What is the working load limit for a safety factor of 10? (A) 1,500 lbs. (B) 5,000 lbs. (C) 7,800 lbs. (D) 10,000 lbs. - ✔️ ✔ Correct Answer A
What knot type is not commonly used as a climbing hitch? (A) Tautline (B) Figure 8 (C) Blake's hitch (D) All of the above - ✔ ️ ✔ Correct Answer C
Which of the following is a false statement regarding the use of snaps for securing the climbing line? (A) Snaps are not permitted in all countries (B) May be self-closing or assisted closing (C) Must be compatible with the D-ring specific to the attachment (D) Required to have double closing action - ✔ ️ ✔ Correct Answer B
What is the minimum required tensile strength in the United States for carabiners? (A) 1,000 lbs. (B) 2,500 lbs. (C) 5,000 lbs. (D) 10,000 lbs. - ✔️ ✔ Correct Answer C What rope type has the highest amount of elongation when loaded? (A) Polypropylene (B) Polyester (C) HMPE
(D) The number of cycles to failure may decrease but not increase due to load magnitude - ✔ ️ ✔ Correct Answer A
What knot type is commonly used for securing equipment to a tree? (A) Timber hitch (B) Sheet bend (C) Prusik hitch (D) Tautline hitch - ✔ ️ ✔ Correct Answer A
What climbing technique uses a Prusik loop to increase safety? (A) Footlocking (B) Body-thrust (C) Single rope technique (D) Mechanical ascending devices - ✔️ ✔ Correct Answer A
What climbing equipment is permitted only for use on trees which are to be removed? (A) Climbing line (B) Spurs
(C) Ladders (D) Mechanical ascending devices - ✔️ ✔ Correct Answer B
What is the minimum recommended main branch diameter for a tie- off point? (A) 2" (B) 3" (C) 4" (D) 6" - ✔️ ✔ Correct Answer C What rigging technique has a high anticipated shock-loading? (A) Butt-hitching (B) Running bowline (C) Through natural crotch (D) Use of a drop zone - ✔️ ✔ Correct Answer A The most common recommended cut type for the removal of limbs is which of the following? (A) Snap cut (B) Drop cut
