ISA Arborist Practice Exam UPDATED
ACTUAL Exam Questions and CORRECT
Answers
When cutting through a tree with a chain saw or drilling into a tree, you would pass through
which structures (in order? - CORRECT ANSWER - bark, phloem, cambium, xylem
If the terminal bud is removed in pruning, ________________________. - CORRECT
ANSWER - growth may be stimulated in lateral buds
The growth rings of many trees __________________. - CORRECT ANSWER - are
visible because of anatomical difference between earlywood and latewood
Which layer of cells is resposible for outward trunk growth and increased girth of a tree? -
CORRECT ANSWER - Cambium
Mycorrhizae are ___________. - CORRECT ANSWER - a symbiotic relationship
between fungi and roots
Douglas-fir (Pseudotsuga menziesii)differs from balsam fir (Abies balsamea) in that
___________. - CORRECT ANSWER - they are not in the same genus
When two leaves - CORRECT ANSWER - Opposite
Select the botanical name that is written correctly.
-Quercus Rubra
-Quercus rubra
-quercus Rubra
-quercus rubra - CORRECT ANSWER - Quercus rubra
, Which genus of trees does NOT have an opposite leaf arrangement?
-Acer (maples)
-Fraxinus (ashes)
-Quercus (oaks)
-Aesculus (horsechestnuts/buckeyes) - CORRECT ANSWER - Quercus (oaks)
Which conifers have needles in bundles? - CORRECT ANSWER - pines
The primery reason that most fine, absorbing roots are typically found near the soil surface is
that __________. - CORRECT ANSWER - roots need both air and water
Microorganisms tend to congregate in the rhizosphere, in part, because _______. - CORRECT
ANSWER - sugar exudates from root tips are a source of food
If a planting hole in a clay soil site is backfilled with sandy soil, ______. - CORRECT
ANSWER - water will drain very slowly out of the planting hole
When soil is compacted. ______________. - CORRECT ANSWER - total pore space and
the percentage of macropores are reduced.
When irrigating trees, _______. - CORRECT ANSWER - Infrequent, deep soakings are
preferable to frequent, shallow waterings.
sandy soils ________________. - CORRECT ANSWER - Have higher infiltration rates
than clay soils
A soil is at field capacity when - CORRECT ANSWER - Gravitational water has drained
away
ACTUAL Exam Questions and CORRECT
Answers
When cutting through a tree with a chain saw or drilling into a tree, you would pass through
which structures (in order? - CORRECT ANSWER - bark, phloem, cambium, xylem
If the terminal bud is removed in pruning, ________________________. - CORRECT
ANSWER - growth may be stimulated in lateral buds
The growth rings of many trees __________________. - CORRECT ANSWER - are
visible because of anatomical difference between earlywood and latewood
Which layer of cells is resposible for outward trunk growth and increased girth of a tree? -
CORRECT ANSWER - Cambium
Mycorrhizae are ___________. - CORRECT ANSWER - a symbiotic relationship
between fungi and roots
Douglas-fir (Pseudotsuga menziesii)differs from balsam fir (Abies balsamea) in that
___________. - CORRECT ANSWER - they are not in the same genus
When two leaves - CORRECT ANSWER - Opposite
Select the botanical name that is written correctly.
-Quercus Rubra
-Quercus rubra
-quercus Rubra
-quercus rubra - CORRECT ANSWER - Quercus rubra
, Which genus of trees does NOT have an opposite leaf arrangement?
-Acer (maples)
-Fraxinus (ashes)
-Quercus (oaks)
-Aesculus (horsechestnuts/buckeyes) - CORRECT ANSWER - Quercus (oaks)
Which conifers have needles in bundles? - CORRECT ANSWER - pines
The primery reason that most fine, absorbing roots are typically found near the soil surface is
that __________. - CORRECT ANSWER - roots need both air and water
Microorganisms tend to congregate in the rhizosphere, in part, because _______. - CORRECT
ANSWER - sugar exudates from root tips are a source of food
If a planting hole in a clay soil site is backfilled with sandy soil, ______. - CORRECT
ANSWER - water will drain very slowly out of the planting hole
When soil is compacted. ______________. - CORRECT ANSWER - total pore space and
the percentage of macropores are reduced.
When irrigating trees, _______. - CORRECT ANSWER - Infrequent, deep soakings are
preferable to frequent, shallow waterings.
sandy soils ________________. - CORRECT ANSWER - Have higher infiltration rates
than clay soils
A soil is at field capacity when - CORRECT ANSWER - Gravitational water has drained
away
