ISA Arborist Study Guide Sample Test Questions with Complete Solutions Bark, phloem, cambium, xylem - Correct Answer When cutting through a tree with a chain saw or drilling into a tree, you would pass through (in order) Growth may be stimulated in lateral buds - Correct Answer If the terminal bud is removed in pruning: The growth rings of a tree: - Correct 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 - Correct Answer layer of cells is responsible for outward growth and increased girth of tree.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.Opposite leaf arrangement is: - Correct Answer When two leaves and/or buds are located at the same node on a twig.Quercus rubra - Correct Answer Scientific name of Red Oak.Quercus (Oak) - Correct Answer This genus of tree usually does not have an opposite leaf arrangement.Pines - Correct Answer These conifers have needles in bundles.Available oxygen and water - Correct 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? - Correct Answer Are in the upper 6 inches of soil. 1 / 2
Water will drain very slowly out of the planting hole. - Correct Answer If a planting hole in a clay soil site is backfilled with sandy soil.When soil is compacted: - Correct Answer Total pore space and the percentage of macropores are reduced.A characteristic of sandy soils in arid regions is: - Correct Answer They tend to become alkaline, and salts build up due to the lack of heavy rainfall.When irrigating trees: - Correct Answer Infrequent, deep soakings are preferable to frequent, shallow waterings.
Sandy soils: - Correct Answer Have a higher infiltration rate than clay soils.
A soil is at field capacity when: - Correct Answer Gravitational water has drained away.With sprinkler irrigation: - Correct Answer 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.In sites where poor drainage can be a problem, which of the following WILL NOT help ensure plant survival? - Correct Answer Placing gravel in the bottom of the planting hole and backfilling with a sandy soil.
- pounds of nitrogen - Correct Answer 80 pound bag of 10-6-4 fertilizer contains how many pounds
- / 2
of actual nitrogen?Nitrogen, phosphorus, potassium - Correct Answer A complete fertilizer contains?A tree may not respond immediately to a fertilizer application if: - Correct Answer A slow release fertilizer was applied, inadequate soil moisture, and a tree is suffering from collar rot A soil test may not identify a nutrient deficiency problem in a plant because: - Correct Answer The soil may have adequate nutrients but something may be inhibiting uptake.