ISA UTILITY ARBORIST MASTER STUDY SET
2026 TEST PAPER QUESTIONS AND
SOLUTIONS COMPLETE AND VERIFIED
⩥ Growth may be stimulated in lateral buds. Answer: If the terminal bud
is removed in pruning:
⩥ The growth rings of a tree:. Answer: 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. Answer: layer of cells is responsible for outward growth
and increased girth of tree.
⩥ Mycorrhizae are:. Answer: A symbiotic relationship between fungi
and roots.
⩥ Douglas-fir (Pseudotsuga menziesii) differs from balsam fir (Abies
balsamea) in that:. Answer: They are not in the same genus.
⩥ Opposite leaf arrangement is:. Answer: When two leaves and/or buds
are located at the same node on a twig.
, ⩥ Quercus rubra. Answer: Scientific name of Red Oak.
⩥ Quercus (Oak). Answer: This genus of tree usually does not have an
opposite leaf arrangement.
⩥ Pines. Answer: These conifers have needles in bundles.
⩥ Available oxygen and water. Answer: 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?. Answer: Are in the upper 6 inches of soil.
⩥ Water will drain very slowly out of the planting hole.. Answer: If a
planting hole in a clay soil site is backfilled with sandy soil.
⩥ When soil is compacted:. Answer: Total pore space and the percentage
of macropores are reduced.
⩥ A characteristic of sandy soils in arid regions is:. Answer: They tend
to become alkaline, and salts build up due to the lack of heavy rainfall.
2026 TEST PAPER QUESTIONS AND
SOLUTIONS COMPLETE AND VERIFIED
⩥ Growth may be stimulated in lateral buds. Answer: If the terminal bud
is removed in pruning:
⩥ The growth rings of a tree:. Answer: 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. Answer: layer of cells is responsible for outward growth
and increased girth of tree.
⩥ Mycorrhizae are:. Answer: A symbiotic relationship between fungi
and roots.
⩥ Douglas-fir (Pseudotsuga menziesii) differs from balsam fir (Abies
balsamea) in that:. Answer: They are not in the same genus.
⩥ Opposite leaf arrangement is:. Answer: When two leaves and/or buds
are located at the same node on a twig.
, ⩥ Quercus rubra. Answer: Scientific name of Red Oak.
⩥ Quercus (Oak). Answer: This genus of tree usually does not have an
opposite leaf arrangement.
⩥ Pines. Answer: These conifers have needles in bundles.
⩥ Available oxygen and water. Answer: 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?. Answer: Are in the upper 6 inches of soil.
⩥ Water will drain very slowly out of the planting hole.. Answer: If a
planting hole in a clay soil site is backfilled with sandy soil.
⩥ When soil is compacted:. Answer: Total pore space and the percentage
of macropores are reduced.
⩥ A characteristic of sandy soils in arid regions is:. Answer: They tend
to become alkaline, and salts build up due to the lack of heavy rainfall.
