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ISA Arborist Study Guide/ Sample Test Questions & Answers
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ISA Arborist Study Guide/ Sample Test Questions & Answers
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ISA Arborist Study Guide/ Sample TestQuestions & Answers
Bark, phloem, cambium, xylem Correct Ans - 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 Ans - If the terminal bud is removed in pruning:
The growth rings of a tree: Correct Ans - 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 Ans - layer of cells is responsible for outward growth and increased girth of tree.
Mycorrhizae are: Correct Ans - A symbiotic relationship between fungi
and roots.
Douglas-fir (Pseudotsuga menziesii) differs from balsam fir (Abies balsamea) in that: Correct Ans - They are not in the same genus.
Opposite leaf arrangement is: Correct Ans - When two leaves and/or buds are located at the same node on a twig.
Quercus rubra Correct Ans - Scientific name of Red Oak.
Quercus (Oak) Correct Ans - This genus of tree usually does not have an opposite leaf arrangement.
Pines Correct Ans - These conifers have needles in bundles.
Available oxygen and water Correct Ans - 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 Ans - Are in the upper 6 inches of soil.
Water will drain very slowly out of the planting hole. Correct Ans - If a planting hole in a clay soil site is backfilled with sandy soil.
When soil is compacted: Correct Ans - Total pore space and the percentage of macropores are reduced.
A characteristic of sandy soils in arid regions is: Correct Ans - They tend to become alkaline, and salts build up due to the lack of heavy rainfall.
When irrigating trees: Correct Ans - Infrequent, deep soakings are preferable to frequent, shallow waterings.
Sandy soils: Correct Ans - Have a higher infiltration rate than clay soils.
A soil is at field capacity when: Correct Ans - Gravitational water has drained away.
With sprinkler irrigation: Correct Ans - 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 Ans - Placing gravel in the bottom of the planting hole and backfilling with a sandy soil.
8 pounds of nitrogen Correct Ans - 80 pound bag of 10-6-4 fertilizer contains how many pounds of actual nitrogen?
Nitrogen, phosphorus, potassium Correct Ans - A complete fertilizer contains?
A tree may not respond immediately to a fertilizer application if: Correct Ans - A slow release fertilizer was applied, inadequate soil moisture, and a tree is suffering from collar rot
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