ISA ARBORIST STUDY GUIDE SAMPLE TEST|| 70+ ACTUAL
QUESTIONS & CORRECT DETAILED ANSWERS
Bark, phloem, cambium, xylem When cutting through a tree with a chain saw or drilling into a tree, you would pass through (in or- der)
1. Growth may be stimulated in lateral buds If the terminal bud is re-
moved in pruning:
2. The growth rings of a tree: Visible because of the
rapid growth rate of ear-
lywood relative to late-
wood, can be counted on
to approximate trees age,
can give information about
growth conditions in pre-
vious years.
3. Cambium layer of cells is responsible
for outward growth and
increased girth of tree.
, ISA ARBORIST STUDY GUIDE SAMPLE TEST|| 70+ ACTUAL
QUESTIONS & CORRECT DETAILED ANSWERS
4. Mycorrhizae are: A symbiotic relationship
between fungi and roots.
5. Douglas-fir (Pseudotsuga menziesii) differs from bal- They are not in the same
sam fir (Abies balsamea) in that: genus.
6. Opposite leaf arrangement is: When two leaves and/or
buds are located at the
same node on a twig.
7. Quercus rubra
, ISA ARBORIST STUDY GUIDE SAMPLE TEST|| 70+ ACTUAL
QUESTIONS & CORRECT DETAILED ANSWERS
Scientific name of Red
Oak.
8. Quercus (Oak) This genus of tree usually
does not have an opposite
leaf arrangement.
9. Pines These conifers have nee-
dles in bundles.
10. Available oxygen and water The primary factor in con-
trolling the depth, spread,
and distribution of tree
roots in the soil is/are:
11. The most fibrous and absorptive portion of a tree's Are in the upper 6 inches
root system is found in? of soil.
QUESTIONS & CORRECT DETAILED ANSWERS
Bark, phloem, cambium, xylem When cutting through a tree with a chain saw or drilling into a tree, you would pass through (in or- der)
1. Growth may be stimulated in lateral buds If the terminal bud is re-
moved in pruning:
2. The growth rings of a tree: Visible because of the
rapid growth rate of ear-
lywood relative to late-
wood, can be counted on
to approximate trees age,
can give information about
growth conditions in pre-
vious years.
3. Cambium layer of cells is responsible
for outward growth and
increased girth of tree.
, ISA ARBORIST STUDY GUIDE SAMPLE TEST|| 70+ ACTUAL
QUESTIONS & CORRECT DETAILED ANSWERS
4. Mycorrhizae are: A symbiotic relationship
between fungi and roots.
5. Douglas-fir (Pseudotsuga menziesii) differs from bal- They are not in the same
sam fir (Abies balsamea) in that: genus.
6. Opposite leaf arrangement is: When two leaves and/or
buds are located at the
same node on a twig.
7. Quercus rubra
, ISA ARBORIST STUDY GUIDE SAMPLE TEST|| 70+ ACTUAL
QUESTIONS & CORRECT DETAILED ANSWERS
Scientific name of Red
Oak.
8. Quercus (Oak) This genus of tree usually
does not have an opposite
leaf arrangement.
9. Pines These conifers have nee-
dles in bundles.
10. Available oxygen and water The primary factor in con-
trolling the depth, spread,
and distribution of tree
roots in the soil is/are:
11. The most fibrous and absorptive portion of a tree's Are in the upper 6 inches
root system is found in? of soil.
