ISA Arborist Study Guide Sample test
questions
When cutting through a tree with a chain saw or drilling into a tree, you would pass through (in order)
- ANSWER-Bark, phloem, cambium, xylem
If the terminal bud is removed in pruning: - ANSWER-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. - ANSWER-
The growth rings of a tree:
layer of cells is responsible for outward growth and increased girth of tree. - ANSWER-Cambium
A symbiotic relationship between fungi and roots. - ANSWER-Mycorrhizae are:
They are not in the same genus. - ANSWER-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. - ANSWER-Opposite leaf
arrangement is:
Scientific name of Red Oak. - ANSWER-Quercus rubra
This genus of tree usually does not have an opposite leaf arrangement. - ANSWER-Quercus (Oak)
These conifers have needles in bundles. - ANSWER-Pines
The primary factor in controlling the depth, spread, and distribution of tree roots in the soil is/are: -
ANSWER-Available oxygen and water
Are in the upper 6 inches of soil. - ANSWER-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. - ANSWER-Water will drain very slowly
out of the planting hole.
Total pore space and the percentage of macropores are reduced. - ANSWER-When soil is compacted:
They tend to become alkaline, and salts build up due to the lack of heavy rainfall. - ANSWER-A
characteristic of sandy soils in arid regions is:
Infrequent, deep soakings are preferable to frequent, shallow waterings. - ANSWER-When irrigating
trees:
Have a higher infiltration rate than clay soils. - ANSWER-Sandy soils:
Gravitational water has drained away. - ANSWER-A soil is at field capacity when:
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. -
ANSWER-With sprinkler irrigation:
questions
When cutting through a tree with a chain saw or drilling into a tree, you would pass through (in order)
- ANSWER-Bark, phloem, cambium, xylem
If the terminal bud is removed in pruning: - ANSWER-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. - ANSWER-
The growth rings of a tree:
layer of cells is responsible for outward growth and increased girth of tree. - ANSWER-Cambium
A symbiotic relationship between fungi and roots. - ANSWER-Mycorrhizae are:
They are not in the same genus. - ANSWER-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. - ANSWER-Opposite leaf
arrangement is:
Scientific name of Red Oak. - ANSWER-Quercus rubra
This genus of tree usually does not have an opposite leaf arrangement. - ANSWER-Quercus (Oak)
These conifers have needles in bundles. - ANSWER-Pines
The primary factor in controlling the depth, spread, and distribution of tree roots in the soil is/are: -
ANSWER-Available oxygen and water
Are in the upper 6 inches of soil. - ANSWER-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. - ANSWER-Water will drain very slowly
out of the planting hole.
Total pore space and the percentage of macropores are reduced. - ANSWER-When soil is compacted:
They tend to become alkaline, and salts build up due to the lack of heavy rainfall. - ANSWER-A
characteristic of sandy soils in arid regions is:
Infrequent, deep soakings are preferable to frequent, shallow waterings. - ANSWER-When irrigating
trees:
Have a higher infiltration rate than clay soils. - ANSWER-Sandy soils:
Gravitational water has drained away. - ANSWER-A soil is at field capacity when:
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. -
ANSWER-With sprinkler irrigation:
