ISA Arborist Study Guide Sample Test
Questions and Answers
When cutting through a tree with a chain saw or drilling into a tree, you would pass
through (in order) - ANS-Bark, phloem, cambium, xylem
If the terminal bud is removed in pruning: - ANS-Growth may be stimulated in lateral
buds
Visible because of the rapid growth rate of earlywood relative to latewood, can be
counted on to approximate trees age, can give information about growth conditions in
previous years. - ANS-The growth rings of a tree:
layer of cells is responsible for outward growth and increased girth of tree. - ANS-
Cambium
A symbiotic relationship between fungi and roots. - ANS-Mycorrhizae are:
They are not in the same genus. - ANS-Douglas-fir (Pseudotsuga menziesii) differs from
balsam fir (Abies balsamea) in that:
When two leaves and/or buds are located at the same node on a twig. - ANS-Opposite
leaf arrangement is:
Scientific name of Red Oak. - ANS-Quercus rubra
This genus of tree usually does not have an opposite leaf arrangement. - ANS-Quercus
(Oak)
These conifers have needles in bundles. - ANS-Pines
The primary factor in controlling the depth, spread, and distribution of tree roots in the
soil is/are: - ANS-Available oxygen and water
Are in the upper 6 inches of soil. - ANS-The most fibrous and absorptive portion of a
tree's root system is found in?
If a planting hole in a clay soil site is backfilled with sandy soil. - ANS-Water will drain
very slowly out of the planting hole.
, Total pore space and the percentage of macropores are reduced. - ANS-When soil is
compacted:
Staggered, and no closer together than the diameter of the trunk. - ANS-If two bracing
rods are installed to support a weak Union, they should be placed:
Holding power will be reduced, decay may be detected when drilling, decay will spread
along the lag - ANS-If a lag hook is installed into decayed wood,
Cabling the limbs together in triangular combinations. - ANS-When cabling a multi
stemmed tree, extra support can be added by:
Witch's broom - ANS-A condition with a cluster of dwarfed shoots on affected twigs:
Ovipositing, egg-laying - ANS-Twig dieback from periodical cicadas is primarily a result
of:
Distorted leaves or shoots. - ANS-Plant damage associated with a sap-feeding insect
pest might appear as:
Phloem-feeding insects causing a loss of vigor - ANS-Scale damage to plants is the
result of:
Uniform with definite borders - ANS-Damage caused by non-living factors tend to be:
The appearance, health, structure of plants. - ANS-Plant Health Care is a
comprehensive program to manage:
Cumulative effects of stress causing decline of a plant over time. - ANS-Mortality spiral
describes the:
Appropriate response process - ANS-Process of gathering information, assessing
problems, determine client expectations, and coarse of action is:
Is translocated throughout the plant. - ANS-Systematic pesticide is one that:
Biological control - ANS-Releasing predators or parasites of an insect pest is an
example of a:
A tree with potential of failure, an environment that may contribute to failure, person or
object that may be injured or damaged. - ANS-Necessary component in the existence of
tree risk is:
White rot - ANS-Which type of decay primarily affects the lignin within and between cell
walls in the wood, reducing the tree's compressive strength?
Questions and Answers
When cutting through a tree with a chain saw or drilling into a tree, you would pass
through (in order) - ANS-Bark, phloem, cambium, xylem
If the terminal bud is removed in pruning: - ANS-Growth may be stimulated in lateral
buds
Visible because of the rapid growth rate of earlywood relative to latewood, can be
counted on to approximate trees age, can give information about growth conditions in
previous years. - ANS-The growth rings of a tree:
layer of cells is responsible for outward growth and increased girth of tree. - ANS-
Cambium
A symbiotic relationship between fungi and roots. - ANS-Mycorrhizae are:
They are not in the same genus. - ANS-Douglas-fir (Pseudotsuga menziesii) differs from
balsam fir (Abies balsamea) in that:
When two leaves and/or buds are located at the same node on a twig. - ANS-Opposite
leaf arrangement is:
Scientific name of Red Oak. - ANS-Quercus rubra
This genus of tree usually does not have an opposite leaf arrangement. - ANS-Quercus
(Oak)
These conifers have needles in bundles. - ANS-Pines
The primary factor in controlling the depth, spread, and distribution of tree roots in the
soil is/are: - ANS-Available oxygen and water
Are in the upper 6 inches of soil. - ANS-The most fibrous and absorptive portion of a
tree's root system is found in?
If a planting hole in a clay soil site is backfilled with sandy soil. - ANS-Water will drain
very slowly out of the planting hole.
, Total pore space and the percentage of macropores are reduced. - ANS-When soil is
compacted:
Staggered, and no closer together than the diameter of the trunk. - ANS-If two bracing
rods are installed to support a weak Union, they should be placed:
Holding power will be reduced, decay may be detected when drilling, decay will spread
along the lag - ANS-If a lag hook is installed into decayed wood,
Cabling the limbs together in triangular combinations. - ANS-When cabling a multi
stemmed tree, extra support can be added by:
Witch's broom - ANS-A condition with a cluster of dwarfed shoots on affected twigs:
Ovipositing, egg-laying - ANS-Twig dieback from periodical cicadas is primarily a result
of:
Distorted leaves or shoots. - ANS-Plant damage associated with a sap-feeding insect
pest might appear as:
Phloem-feeding insects causing a loss of vigor - ANS-Scale damage to plants is the
result of:
Uniform with definite borders - ANS-Damage caused by non-living factors tend to be:
The appearance, health, structure of plants. - ANS-Plant Health Care is a
comprehensive program to manage:
Cumulative effects of stress causing decline of a plant over time. - ANS-Mortality spiral
describes the:
Appropriate response process - ANS-Process of gathering information, assessing
problems, determine client expectations, and coarse of action is:
Is translocated throughout the plant. - ANS-Systematic pesticide is one that:
Biological control - ANS-Releasing predators or parasites of an insect pest is an
example of a:
A tree with potential of failure, an environment that may contribute to failure, person or
object that may be injured or damaged. - ANS-Necessary component in the existence of
tree risk is:
White rot - ANS-Which type of decay primarily affects the lignin within and between cell
walls in the wood, reducing the tree's compressive strength?
