ISA Certified Arborist Test ()
Questions and Correct Answers, 100% Passing
Score
1.Bark, phloem, cambium, xylem: 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: If the terminal bud
is removed in pruning:
3.The growth rings of a tree:: 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.
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17
,4.Cambium: layer of cells is responsible for outward growth and
increased girth of tree.
5.Mycorrhizae are:: A symbiotic relationship between fungi and roots.
6.Douglas-fir (Pseudotsuga menziesii) differs from balsam fir
(Abies bal- samea) in that:: They are not in the same genus.
7.Opposite leaf arrangement is:: When two leaves and/or buds are
located at the same node on a twig.
8.Quercus rubra: Scientific name of Red Oak.
9.Quercus (Oak): This genus of tree usually does not have an
opposite leaf arrangement.
10.Pines: These conifers have needles in bundles.
11.Available oxygen and water: The primary factor in
controlling the depth, spread, and distribution of tree roots in the
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17
, soil is/are:
12.The most fibrous and absorptive portion of a tree's root
system is found in?: Are in the upper 6 inches of soil.
13.Water will drain very slowly out of the planting hole.: If a
planting hole in a clay soil site is backfilled with sandy soil.
14.When soil is compacted:: Total pore space and the percentage of
macropores are reduced.
15.A characteristic of sandy soils in arid regions is:: They tend
to become alkaline, and salts build up due to the lack of heavy
rainfall.
16.When irrigating trees:: Infrequent, deep soakings are preferable
to frequent, shallow waterings.
17.Sandy soils:: Have a higher infiltration rate than clay soils.
3/
17
Questions and Correct Answers, 100% Passing
Score
1.Bark, phloem, cambium, xylem: 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: If the terminal bud
is removed in pruning:
3.The growth rings of a tree:: 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.
1/
17
,4.Cambium: layer of cells is responsible for outward growth and
increased girth of tree.
5.Mycorrhizae are:: A symbiotic relationship between fungi and roots.
6.Douglas-fir (Pseudotsuga menziesii) differs from balsam fir
(Abies bal- samea) in that:: They are not in the same genus.
7.Opposite leaf arrangement is:: When two leaves and/or buds are
located at the same node on a twig.
8.Quercus rubra: Scientific name of Red Oak.
9.Quercus (Oak): This genus of tree usually does not have an
opposite leaf arrangement.
10.Pines: These conifers have needles in bundles.
11.Available oxygen and water: The primary factor in
controlling the depth, spread, and distribution of tree roots in the
2/
17
, soil is/are:
12.The most fibrous and absorptive portion of a tree's root
system is found in?: Are in the upper 6 inches of soil.
13.Water will drain very slowly out of the planting hole.: If a
planting hole in a clay soil site is backfilled with sandy soil.
14.When soil is compacted:: Total pore space and the percentage of
macropores are reduced.
15.A characteristic of sandy soils in arid regions is:: They tend
to become alkaline, and salts build up due to the lack of heavy
rainfall.
16.When irrigating trees:: Infrequent, deep soakings are preferable
to frequent, shallow waterings.
17.Sandy soils:: Have a higher infiltration rate than clay soils.
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17
