ISA Arborist Study Guide Sample test questions | COMPLETE MULTIPLE
CHOICE QUESTIONS AND ANSWERS 2025 UPDATED | GRADED A+ |
GET IT CORRECT!!
Bark, phloem, cambium, xylem - (answers)When cutting through a tree with a chain saw or
drilling into a tree, you would pass through (in order)
Growth may be stimulated in lateral buds - (answers)If the terminal bud is removed in pruning:
The growth rings of a tree: - (answers)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.
Cambium - (answers)layer of cells is responsible for outward growth and increased girth of tree.
Mycorrhizae are: - (answers)A symbiotic relationship between fungi and roots.
Douglas-fir (Pseudotsuga menziesii) differs from balsam fir (Abies balsamea) in that: -
(answers)They are not in the same genus.
Opposite leaf arrangement is: - (answers)When two leaves and/or buds are located at the same
node on a twig.
Quercus rubra - (answers)Scientific name of Red Oak.
Quercus (Oak) - (answers)This genus of tree usually does not have an opposite leaf arrangement.
Pines - (answers)These conifers have needles in bundles.
, Available oxygen and water - (answers)The primary factor in controlling the depth, spread, and
distribution of tree roots in the soil is/are:
The most fibrous and absorptive portion of a tree's root system is found in? - (answers)Are in the
upper 6 inches of soil.
Water will drain very slowly out of the planting hole. - (answers)If a planting hole in a clay soil
site is backfilled with sandy soil.
When soil is compacted: - (answers)Total pore space and the percentage of macropores are
reduced.
A characteristic of sandy soils in arid regions is: - (answers)They tend to become alkaline, and
salts build up due to the lack of heavy rainfall.
When irrigating trees: - (answers)Infrequent, deep soakings are preferable to frequent, shallow
waterings.
Sandy soils: - (answers)Have a higher infiltration rate than clay soils.
A soil is at field capacity when: - (answers)Gravitational water has drained away.
With sprinkler irrigation: - (answers)Less frequent waterings of longer duration will reduce the
likelihood of salt buildup, water hitting the soil surface can lead to crusting, application rates that
exceed absorption can lead to runoff.
In sites where poor drainage can be a problem, which of the following WILL NOT help ensure
plant survival? - (answers)Placing gravel in the bottom of the planting hole and backfilling with
a sandy soil.
8 pounds of nitrogen - (answers)80 pound bag of 10-6-4 fertilizer contains how many pounds of
actual nitrogen?
CHOICE QUESTIONS AND ANSWERS 2025 UPDATED | GRADED A+ |
GET IT CORRECT!!
Bark, phloem, cambium, xylem - (answers)When cutting through a tree with a chain saw or
drilling into a tree, you would pass through (in order)
Growth may be stimulated in lateral buds - (answers)If the terminal bud is removed in pruning:
The growth rings of a tree: - (answers)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.
Cambium - (answers)layer of cells is responsible for outward growth and increased girth of tree.
Mycorrhizae are: - (answers)A symbiotic relationship between fungi and roots.
Douglas-fir (Pseudotsuga menziesii) differs from balsam fir (Abies balsamea) in that: -
(answers)They are not in the same genus.
Opposite leaf arrangement is: - (answers)When two leaves and/or buds are located at the same
node on a twig.
Quercus rubra - (answers)Scientific name of Red Oak.
Quercus (Oak) - (answers)This genus of tree usually does not have an opposite leaf arrangement.
Pines - (answers)These conifers have needles in bundles.
, Available oxygen and water - (answers)The primary factor in controlling the depth, spread, and
distribution of tree roots in the soil is/are:
The most fibrous and absorptive portion of a tree's root system is found in? - (answers)Are in the
upper 6 inches of soil.
Water will drain very slowly out of the planting hole. - (answers)If a planting hole in a clay soil
site is backfilled with sandy soil.
When soil is compacted: - (answers)Total pore space and the percentage of macropores are
reduced.
A characteristic of sandy soils in arid regions is: - (answers)They tend to become alkaline, and
salts build up due to the lack of heavy rainfall.
When irrigating trees: - (answers)Infrequent, deep soakings are preferable to frequent, shallow
waterings.
Sandy soils: - (answers)Have a higher infiltration rate than clay soils.
A soil is at field capacity when: - (answers)Gravitational water has drained away.
With sprinkler irrigation: - (answers)Less frequent waterings of longer duration will reduce the
likelihood of salt buildup, water hitting the soil surface can lead to crusting, application rates that
exceed absorption can lead to runoff.
In sites where poor drainage can be a problem, which of the following WILL NOT help ensure
plant survival? - (answers)Placing gravel in the bottom of the planting hole and backfilling with
a sandy soil.
8 pounds of nitrogen - (answers)80 pound bag of 10-6-4 fertilizer contains how many pounds of
actual nitrogen?
