ISA Tree Selection and Planting

Question 1

Which principle best describes selecting a tree species whose mature size, form, and cultural needs match the available space and site conditions?

Accepted Answer

Right tree, right place

Answer

Integrated pest management

Answer

Succession planting

Answer

Canopy layering

Question 2

When evaluating an urban planting site, which soil characteristic is most critical to assess first?

Accepted Answer

Soil drainage

Answer

Soil color and texture

Answer

Soil nitrogen content

Answer

Percentage of organic matter

Question 3

What does a USDA Plant Hardiness Zone designation primarily indicate for tree selection?

Accepted Answer

Minimum average annual temperature a plant can survive

Answer

Maximum height a tree will reach in that region

Answer

The tree's tolerance to drought and heat stress

Answer

Pest and disease pressure in a geographic area

Question 4

Which tree growth form is MOST appropriate for planting in corridors beneath overhead utility lines?

Accepted Answer

Columnar or fastigiate

Answer

Excurrent (strong central leader)

Answer

Decurrent (spreading crown)

Answer

Weeping or pendulous

Question 5

When selecting trees for a site with chronically compacted soils, which characteristic is MOST desirable?

Accepted Answer

Tolerance of reduced oxygen in the root zone

Answer

Rapid juvenile growth rate

Answer

High supplemental irrigation requirements

Answer

Very shallow rooting habit

Question 6

A tree being considered for a parking lot island should be evaluated primarily for tolerance of:

Accepted Answer

Heat, drought, and reflected radiation from pavement

Answer

Moderate shade and cool temperatures

Answer

High soil moisture and humidity

Answer

Competition from turfgrass

Question 7

Which factor is MOST important when determining the appropriate canopy spread of a tree selected for a residential planting?

Accepted Answer

Proximity to overhead utilities, structures, and property lines at maturity

Answer

Aesthetic preference of the homeowner

Answer

Availability of the species at local nurseries

Answer

The current size of the nursery stock