ISA Arborist Certification EXAM with
Accurate Solutions
Compacted soil often lacks which factor necessary for plant survival? - ANS-Sufficient
water, oxygen, and pore space
If a transplanted tree declines or dies within the first year, the cause is most likely a lack
or excess of _______ - ANS-Water
What type of injury occurs when the outer wood and bark of a tree cool rapidly, causing
both to contract and split? - ANS-Frost cracks
A root that arises from a stem, rather than from another root, is called a(n) _______. -
ANS-Adventitious root
In an area around a tree that is frequently mowed, an arborist removed the turf grass
and replaced it with mulch. What type of problem was she trying to prevent? - ANS-
Physical damage
Leaf or fruit drop is also called _______. - ANS-Abscission
What type of plant is more adapted to dry areas? - ANS-Xerophyte
What is the point at which a plant cannot pull any more water from the soil and suffers
permanent damage? - ANS-Permanent wilting point
Which of the following is a physical injury? - ANS-Lightning damage
Which of the following situations is prone to girdling roots? - ANS-Trees planted too
deeply
The process in which a tree uses oxygen to convert carbohydrates into energy is called
_______. - ANS-Aerobic respiration
A prolonged water shortage lasting from days to months refers to what is called
_______. - ANS-Chronic water deficit
What is the most common growth factor that trees or other plants compete for? - ANS-
Sunlight
,A plant is more likely to experience freezing and chilling injury if it has not had the
chance to become _______. - ANS-Hardened off
A compound that is poisonous to plants is considered _______. - ANS-Phytotoxic
A tree's natural process of defense by which chemical and physical boundaries are
created to limit the spread of disease and decay organisms is known as _______. -
ANS-Compartmentalization
What is the transition zone from trunk to roots? - ANS-Trunk Flare
A tree has a long, spirally oriented scar down the length of its trunk that follows the grain
of the wood where the bark was ripped away. What was the likely cause of this injury? -
ANS-Lightning Strike
A substance that moves throughout an entire plant is said to be _______. - ANS-
systemic
The signs of insect feeding damage are directly related to ________. - ANS-The type of
mouthparts the insect has
Aphids/adelgids, some scales, leafhoppers, and true bugs use what method of feeding?
- ANS-Piercing and sucking
What is honeydew? - ANS-a sticky substance secreted by certain insects when feeding
upon plants
Japanese beetles create skeletonized leaves. How are Japanese beetles classified? -
ANS-Defoliating insects
Scale insects are sometimes confused with galls. What is a quick way to distinguish
between the two? - ANS-Scrape of the bump and observe the bark below
Insects that carry and transmit disease are known as _______. - ANS-Vectors
Fungicides are usually most effective when used to _______. - ANS-Prevent the
etablishment of a disease
Which of the following is a conclusive sign of borer damage? - ANS-Small holes in the
trunk and branches with frass
Animals can create risk situations for arborist work in trees. - ANS-True
Which of the following is characteristic of a vascular disease? - ANS-extremely difficult
to eliminate after infection occurs
, What is a common leaf symptom of feeding damage by piercing and sucking insects? -
ANS-Chlorosis, stippling, drooping
Nematodes most commonly attack what part of the tree? - ANS-Root system
Which of the following types of scales produces honeydew? - ANS-Soft Scales
Which of the following is a way beavers can cause tree damage? - ANS-Feeding on a
tree's bark, submerging roots for long periods of time by damming waterways, felling
trees for dam construction
Some diseases require more than one host to complete their life cycle. These hosts are
called _______. - ANS-Alternate host
Which animal has a feeding pattern that looks jagged or torn? - ANS-Deer
What can become serious if a susceptible host, a pathogenic organism, a suitable
environment, and the right timing are present? - ANS-Disease
If rodents are a problem during the winter, you should _______. - ANS-Place a physical
barrier around the affected tree
A small, often microscopic, wormlike creature is called a(n) _______. - ANS-Nematode
An important part of limb walking that helps maintain balance without putting excessive
weight on the tree is to _______. - ANS-Keep your weight on the rope
Climbing spurs should be used only when working on trees _______. - ANS-to be
removed where no electrical hazards exists
A Prusik loop is used in climbing _______. - ANS-to tie in for the secured footlock
technique
When using a chain saw in a tree, a climber must _______. - ANS-be secured with 2
separate lines such as a work-positioning lanyard and a climbing line, 2 climbing lines,
or 2 lanyards
According to the ANSI Z133 safety standards, climbing lines must _________. - ANS-
have a minimum tensile strength of at least 24.04 kN
The technique in which a climber ascends a tree by placing his or her feet high on the
trunk and thrusts the hips upward while pulling the slack out of the climbing line and
advancing the friction hitch is called _______ - ANS-Body thrusting
Knots that tie two ropes together are known as_______. - ANS-Bends
Accurate Solutions
Compacted soil often lacks which factor necessary for plant survival? - ANS-Sufficient
water, oxygen, and pore space
If a transplanted tree declines or dies within the first year, the cause is most likely a lack
or excess of _______ - ANS-Water
What type of injury occurs when the outer wood and bark of a tree cool rapidly, causing
both to contract and split? - ANS-Frost cracks
A root that arises from a stem, rather than from another root, is called a(n) _______. -
ANS-Adventitious root
In an area around a tree that is frequently mowed, an arborist removed the turf grass
and replaced it with mulch. What type of problem was she trying to prevent? - ANS-
Physical damage
Leaf or fruit drop is also called _______. - ANS-Abscission
What type of plant is more adapted to dry areas? - ANS-Xerophyte
What is the point at which a plant cannot pull any more water from the soil and suffers
permanent damage? - ANS-Permanent wilting point
Which of the following is a physical injury? - ANS-Lightning damage
Which of the following situations is prone to girdling roots? - ANS-Trees planted too
deeply
The process in which a tree uses oxygen to convert carbohydrates into energy is called
_______. - ANS-Aerobic respiration
A prolonged water shortage lasting from days to months refers to what is called
_______. - ANS-Chronic water deficit
What is the most common growth factor that trees or other plants compete for? - ANS-
Sunlight
,A plant is more likely to experience freezing and chilling injury if it has not had the
chance to become _______. - ANS-Hardened off
A compound that is poisonous to plants is considered _______. - ANS-Phytotoxic
A tree's natural process of defense by which chemical and physical boundaries are
created to limit the spread of disease and decay organisms is known as _______. -
ANS-Compartmentalization
What is the transition zone from trunk to roots? - ANS-Trunk Flare
A tree has a long, spirally oriented scar down the length of its trunk that follows the grain
of the wood where the bark was ripped away. What was the likely cause of this injury? -
ANS-Lightning Strike
A substance that moves throughout an entire plant is said to be _______. - ANS-
systemic
The signs of insect feeding damage are directly related to ________. - ANS-The type of
mouthparts the insect has
Aphids/adelgids, some scales, leafhoppers, and true bugs use what method of feeding?
- ANS-Piercing and sucking
What is honeydew? - ANS-a sticky substance secreted by certain insects when feeding
upon plants
Japanese beetles create skeletonized leaves. How are Japanese beetles classified? -
ANS-Defoliating insects
Scale insects are sometimes confused with galls. What is a quick way to distinguish
between the two? - ANS-Scrape of the bump and observe the bark below
Insects that carry and transmit disease are known as _______. - ANS-Vectors
Fungicides are usually most effective when used to _______. - ANS-Prevent the
etablishment of a disease
Which of the following is a conclusive sign of borer damage? - ANS-Small holes in the
trunk and branches with frass
Animals can create risk situations for arborist work in trees. - ANS-True
Which of the following is characteristic of a vascular disease? - ANS-extremely difficult
to eliminate after infection occurs
, What is a common leaf symptom of feeding damage by piercing and sucking insects? -
ANS-Chlorosis, stippling, drooping
Nematodes most commonly attack what part of the tree? - ANS-Root system
Which of the following types of scales produces honeydew? - ANS-Soft Scales
Which of the following is a way beavers can cause tree damage? - ANS-Feeding on a
tree's bark, submerging roots for long periods of time by damming waterways, felling
trees for dam construction
Some diseases require more than one host to complete their life cycle. These hosts are
called _______. - ANS-Alternate host
Which animal has a feeding pattern that looks jagged or torn? - ANS-Deer
What can become serious if a susceptible host, a pathogenic organism, a suitable
environment, and the right timing are present? - ANS-Disease
If rodents are a problem during the winter, you should _______. - ANS-Place a physical
barrier around the affected tree
A small, often microscopic, wormlike creature is called a(n) _______. - ANS-Nematode
An important part of limb walking that helps maintain balance without putting excessive
weight on the tree is to _______. - ANS-Keep your weight on the rope
Climbing spurs should be used only when working on trees _______. - ANS-to be
removed where no electrical hazards exists
A Prusik loop is used in climbing _______. - ANS-to tie in for the secured footlock
technique
When using a chain saw in a tree, a climber must _______. - ANS-be secured with 2
separate lines such as a work-positioning lanyard and a climbing line, 2 climbing lines,
or 2 lanyards
According to the ANSI Z133 safety standards, climbing lines must _________. - ANS-
have a minimum tensile strength of at least 24.04 kN
The technique in which a climber ascends a tree by placing his or her feet high on the
trunk and thrusts the hips upward while pulling the slack out of the climbing line and
advancing the friction hitch is called _______ - ANS-Body thrusting
Knots that tie two ropes together are known as_______. - ANS-Bends
