ISA COMPREHENSIVE EXAMINATION 2026
FULL QUESTIONS AND VERIFIED
SOLUTIONS
◉ 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.
FULL QUESTIONS AND VERIFIED
SOLUTIONS
◉ 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.
