ISA Arborist EXAM STUDY BUNDLE 2023 – 2024 (COMPLETE PACKAGE)(Verified)

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ISA Certified Arborist Exam
Questions and Answers 2023 – 2024
(Verified Answers by Expert)

1. Makes the color or the leaves green so photosynthesis can take place
   ANS –
   Chlorophyll
   2.loss of water vapor from leaves ANS Transpiration
   3.protects branches & trunk of tree from injury ANS Bark
   4.Orientation of growth in external cell ANS Excurrent Growth
2. Opposite leaf
   arrangement MAPLE
   ASH

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DOGWOOD
HORSECHESTNUT ANS M.A.D.HORSE

6. Measure of acidity or alkaline from 0 to 14
   <7 acidic 7> Alkaline
   7 Neutral ANS pH
   7.rounded or broader tree growth ANS Decurrent Growth
   8.loss of leaves in the fall ANS Deciduous
   9.process of converting food into energy ANS Respiration
   10.pours in leaves that open and close to allow for water transportation ANS
   Stom- ata
   11.transportation for the water and minerals throughout the tree ANS Xylem12.Conducts Carbohydrates ANS Phloem
   13.Process how water enters roots ANS Osmosis
   14.organic components that are decaying matter to help increase water
   hold- ing & nutrients to improve soil structure ANS Organic Matter

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ISA Certified Arborist – Test Questions and Answers
2023 – 2024 (Verified Answers by Expert)

1. What example of tree stressors can be classified as acute? PEB Pg42

• Lightning strike
• insufficient soil
• poor light exposure
• poor moisture conditions: lightning strike

1. What is most likely NOT a possible cause of deformed leaves? PEB pg 4- spray injury

• air pollution
• anthracnose
• frost: Air pollution

1. What tree symptom is NOT likely to be caused by insect infestation?
   PEB Pg42

• leaf droop
• yellow specks
• off-color foliage
• leaves with a scorched appearance: Leaves with a scorched appearance

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4. What insect listed below is classified as having piercing or sucking
   mouth- parts? PEB Pg43

• leafhoppers
• Beetles
• weevils
• borers: leafhoppers

4. What herbicide type eliminates the whole of the plant over a short periodof time? PEB Pg43

• Pre-emergent
• Contact
• Systemic
• Drench: systemic

4. If a tree is suffering from girdling root, what is most likely NOT an
   advisable action? PEB Pg43

• Remove the largest roots first
• Remove only the smallest roots
• Remove the tree
• None of the above: Remove the largest roots first

4. Which of the following is NOT classified as an insect? PEB Pg43

• Mites
• Beetles
• Moths

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• Caterpillars: Mites

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8. What statement below is FALSE regarding vascular disease? PEB Pg44

• Examples include Dutch elm disease and oak wilt
• it is treatable if found in a reasonable timeframe
• it affects the flow of water and nutrients
• it originates from pathogens entering the plant: it is treatable if found
  in a reasonable timeframe

8. Cellulose and lignin are a defense mechanism against predators by
   what means? PEB Pg44

• they give off an unfavorable flavor
• They can’t be digested
• they have a poor taste
• They are toxic: They can’t be digested
  10.A tree exhibits wounded areas of the lower trunk and some physical
  damage to surface roots. What is most likely the cause of injury? PEB
  Pg44
• Frost
• Poor soil conditions
• Lawnmower or machinery
• disease: lawnmower or machinery
  11.What is not one of the primary functions of the energy produced
  by photosynthesis? PEB Pg44
• maintenance

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ISA Arborist Certification Exam
Questions and Answers
2023 – 2024 (Verified Answers by Expert)

1. One way to determine how good the drainage is in a potential planting
   area is to:
   A.Test the soil pH
   B. Use an air excavation device to loosen the soil
   C. Perform a water percolation test
   D. Any of the above ANS : C. Perform a water percolation test
2. The major water-conducting cells in angiosperms are the:
   A.Tracheids
   B. Fibers
   C. Parenchyma cells
   D.Vessels ANS : D. Vessels
3. Carbon sequestration occurs:
   A. During photosynthesis

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B. As emissions from vehicles are reduced
C. As sunlight combines with air pollution
D. As wood decays ANS : A. During photosynthesis

4. Armillaria mushrooms are often an indicator of:
   A. Poor soil biology
   B. Stressed trees
   C. Root decay
   D. All of the above ANS : D. All of the above
5. A landscape architect has designed a shaded nature walk behind a
   preschool. Which of the following would not be a good tree quality in
   this space?
   A. Attractive fall coloring
   B. Abundant fruiting
   C. Broad, deciduous canopy
   D. All of the above ANS : B. Abundant fruiting
6. A spring pole refers to:
   A. New growth on a tree or shrub after bud break.
   B. A pole saw or pruner used in spring, designed to minimize damage
   to sloughing bark.
   C. A tree trunk that has had all its branches removed.
   D. A pinned branch or small tree under tension by fallen trees. ANS : D. A
   pinned branch or small tree under tension by fallen trees.

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7. The branch collar is formed:
   A. By the annual process by which tissue is layered where the branch
   and stem meet
   B. Only in thick-barked trees, where bark has built up around a union

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ISA Arborist Certification Practice Exam
Questions and Answers
2023 – 2024 (Verified Answers by Expert)

1. The ideal soil ratio for solids to pore space is:
   (A) 20:80 (B) 35:65 (C) 40:60 (D) 50:50 ANS : D
2. What is the correct scientific name for the oak tree genus?
   (A) Quercus (B) Pyrus (C) Larix (D) Acer ANS : A
3. Which of the following is not one of the five major categories of soil
   hori- zons?
   (A) O (B) E (C) N (D) B ANS : C
4. Loam is least composed of what soil classification?
   (A) Sand(B) Silt(C) Clay(D) Loam is composed of all soils evenly ANS : C
5. What is the difference in magnitude of acidity between a PH level
   reading of 4 vs. a PH reading of 7?
   (A) 1(B) 3(C) 100 (D) 1000 ANS : D

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6. What is not a detrimental impact on tree growth from compaction?
   (A) Restricted root growth
   (B) Reduction of water availability
   (C) Increasing organic material
   (D) Restricting air movement ANS : C
7. Field capacity is achieved after the draining of which of the following?
   (A) Gravitational water
   (B) Capillary water
   (C) Micropore water
   (D) Compacted drainage ANS : A
8. What best defines the permanent wilting point soil moisture condition?
   (A) Water is present in macro and micropores
   (B) The condition present immediately after the removal of gravitational wate(C) Water is held by soil but unavailable to plants such that they can’t recove(D) No water present in soil ANS : C
9. What soil below most likely has the lowest infiltration rate?
   (A) Loose sand
   (B) Compacted sand
   (C) Loose clay
   (D) Compacted clay ANS : D
   10.What major soil horizon category is not included in the zone

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designated as topsoil?
(A) A (B) O (C) E (D) C ANS : D
11.What soil type is most easily compacted?
(A) Sand(B) Clay(C) Silt(D) Bedrock ANS : B

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12.What is not a tree characteristic which helps to prevent the loss of water(A) Increased leaf surface area (B) Deep root systems(C) Leaf hairs(D)
Waxy outer leaf layer ANS : A
13.What irrigation system type provides water slowly to specific areas of
the tree root zone?
(A) Drip irrigation(B) High-pressure injection (C) Basin irrigation
(D) Soaker hose ANS : A
14.Trees help to control stormwater runoff by all of the following
means except:
(A) Trees hold water on bark and leaves
(B) Roots intercept and retain runoff
(C) Fallen leaves create a layer of absorption on the ground
(D) All of the above ANS : D
15.What is not an advantage of the use of mulching?
(A) Improve infiltration
(B) Promote deep root system
(C) Reduce soil evaporation
(D) Limit weed competition ANS : B
16.What is the minimum slope for drainage pipes placed above an
impervious layer?
(A) 1/16″ per ft (B) 1/8″ per ft (C) 1/4″ per ft (D) 1/2″ per ft ANS : C

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ISA Utility Arborist Master Study Set (All SectionsLatest Questions and Answers 2023 – 2024
(Verified Answers by Expert)
1.Precipitation that freezes solid before it hits the ground: Sleet
2.incident command system: Term for a systematic method for command,control, and coordination of an emergency response
3.Most utilities, municipalities, and large tree contracting firms have
designat- ed storm processes and designated ( ) where conditions are
monitored and decisions are made.: emergency operations center
4.T/F Personell from external organizations who travel to a storm area
are generally paid the higher of either their home pay rates or the
established local rates: True

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5.Percent accuracy of the US National Hurricane Center to predict the
track of a storm: 67
6.T/F Removal of brush following a storm is typically the responsibility of
the customer: True
7.a proactive measure in which all operations are brought to a halt until
relevant safety information can be provided to response workers: safety
stand down
8.Organizations such as electric utilities may declare an emergency
indepen- dent of official government declarations: True

9. Enhanced Fujita ratings are based on estimated damage before the
   storm-
   : False

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10.Enhanced Fujita ratings are based on wind speeds during the storm:
False
11.Enhanced Fujita ratings are based on observations during the storm:
False
12.T/F Enhanced Fujita ratings are based on observed damage following
the storm: True
13.T/F Rain and snow on dense foliage can increase the likelihood of
tree failure: True
14.T/F Heavy, wet snows have a snow-to-water equivalent that is 10:1
or less: True
15.T/F Heavy, wet snows have a snow-to-water equivalent that is 15:10:
False

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16.T/F Heavy, wet snows have a snow-to-water equivalent that is 20:1: False17.T/F Heavy, wet snows have a snow-to-water equivalent that is 30:1
or more: False
18.T/F On the Saffir-Simpson Hurricane wind scale, a storm must be at
least category 5 to be considered major: False
19.T/F On the Saffir-Simpson Hurricane wind scale, a storm must be at
least category 4 to be considered major: False
20.T/F On the Saffir-Simpson Hurricane wind scale, a storm must be at
least category 3 to be considered major: True

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ISA Utility Specialist (Chapters 1-7)
1.In the U.S., enforcement of safety work rules resides with ANS
Occupational Safety & Health Administration
(OSHA)
2.Utility pruning is the pruning of trees located in the vicinity of power linesfor the purpose of ANS ensuring reliableservice
3.A comprehensive vegetation management program should be
rather than reactive, & based on principals of vegetation management ANS proactive;
Integrated
4.What is a volt ANS a unit of electrical force

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5.Major storms or weather events are the usual cause of
power outages over large areas ANS catastrophic
6.Without , messages can have multiple meanings ANS context

7. ISA BMPprovide a practical guide for implementing
   ANS industry standards
   8.Electrical resistance determines how much is required tomove electricity along a conductor and is measured in ANS energy;
   Ohms
   9.When communicating, a person’s experience & will influence
   how the person reacts ANS perceptions

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10.Crew mobilization for a storm event is much more rapid from a
status ANS standby
11.NERC standards are specific to what line voltages ANS 200 kV & above
12.An important first step in any vegetation management program shouldbe to asses system conditions, which is often done through an
ANS in- ventory
13.Which type of cuts are less unacceptable ANS
internodal cuts (e.g. topping)
14.A worker neglecting to wear cut-resistant chaps while operating a chainsaw is committing an unsafe , while an employer failing to
provide chaps is creating an unsafe ANS act;
Condition
15.A conductor carrying more than volts would be considered
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a NERC line ANS 200,000
16.Communication is both verbal & nonverbal. When a customer isconfronted with contradictory information, the person will usually believe the message ANS nonverbal
17.Voluntary safety standards for pruning, trimming, repairing, maintaining& removing trees, & cutting brush ANS ANSI Z133

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ISA Arborist Study Guide Sample Test Questions and Answers
2023 – 2024 (Verified Answers by Expert)
1.Bark, phloem, cambium, xylem ANS When cutting through a tree with a
chain saw or drilling into a tree, you would pass through (in order)
2.Growth may be stimulated in lateral buds ANS If the terminal bud is
removed in pruning
3.The growth rings of a tree ANS Visible because of the rapid growth
rate of early- wood relative to latewood, can be counted on to
approximate trees age, can give information about growth conditions
in previous years.
4.Cambium ANS layer of cells is responsible for outward growth andincreased girth of tree.

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5.Mycorrhizae are ANS A symbiotic relationship between fungi and roots.6.Douglas-fir (Pseudotsuga menziesii) differs from balsam fir (Abies
bal- samea) in that ANS They are not in the same genus.
7.Opposite leaf arrangement is ANS When two leaves and/or buds are
located at the same node on a twig.
8.Quercus rubra ANS Scientific name of Red Oak.
9.Quercus (Oak) ANS This genus of tree usually does not have an
opposite leaf arrangement.
10.Pines ANS These conifers have needles in bundles.
11.Available oxygen and water ANS The primary factor in controlling

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ISA Municipal Arborist Study Guide
Questions and Answers 2023 – 2024
(Verified Answers by Expert)
1.describe the difference among arboriculture, municipal arboriculture,
and urban forestry. municipal arboriculture ANS urban forestry
encompasses all the greenspaces within a city.
municipal arboriculture is a specialize field of arboriculture and urban
forestry that deals with management of planted and naturally
occurring greenspaces on public land in communities.
arboriculture focuses on tree care activities applied to individual
trees and small groups of trees
2.list 3 reasons it is important to understand and be able to describe the
benefits trees provide ANS 1. demonstrate return on urban forest
program funding. 2.meet environmental quality retirements
3.apply for grants aimed at environmental enhancement/protection

3. 5 environmental benefits trees provide ANS 1. enhance air quality by

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absorbing and intercepting atmospheric contaminants

2. mitigate global warming through carbon sequestering
3. conserve energy through sun and wind protection
4. reduce stormwater runoff and erosion
5. reduce smog production by lowering temperatures in cities and
   vehicles.
   4.how do tree affect particulates ANS tree filter out particles from the air
   that adhere to leaves, twigs, and branches
   5.How do trees cause pollution ANS some trees produce biogenic
   volatile organic compounds that contribute to the formation of ozone
   and carbon monoxide
   6.how do trees mitigate global warming ANS trees remove CO2 from the
   air and sequester carbon in wood. lowering the concentration of CO2
   reduces greenhouses gases and mitigates global warming.
6. research has focused on quantifying specific environmental benefits
   of trees, including ANS 1.energy conservation
   2.carbon sequestering