ISA Certified Arborist -
Test Questions and
Answers |
100% Verified Answers
1. What is the most important factor when planting a tree?
A. Amount of rainfall
B. Proper planting depth
C. Fertilizer type
D. Leaf shape
2. Which of the following is an essential macronutrient for trees?
A. Iron
B. Nitrogen
C. Zinc
D. Boron
,3. What is the ideal time of year to prune most deciduous trees?
A. Mid-summer
B. Late winter
C. Early autumn
D. Late spring
4. What is the first step in diagnosing a tree problem?
A. Apply insecticide
B. Remove the tree
C. Identify the tree species
D. Prune affected limbs
5. Which type of pruning removes entire branches at their origin?
A. Thinning
B. Heading
C. Pollarding
D. Topping
6. What is the critical root zone (CRZ)?
A. Area within the dripline
B. Area 1 ft radius per inch of trunk diameter
C. Top 10 inches of the soil
D. Base of the trunk
7. A soil compaction issue is most likely to affect:
A. Leaf color
B. Root growth and water uptake
C. Bark structure
D. Flowering
, 8. Which pruning technique can cause decay and weak branch structure?
A. Drop-crotch pruning
B. Crown cleaning
C. Topping
D. Crown raising
9. The main function of xylem is to:
A. Produce energy
B. Store starch
C. Transport water and nutrients upward
D. Provide food for the roots
10. Which disease is caused by a fungus?
A. Dutch elm disease
B. Emerald ash borer
C. Aphid infestation
D. Spider mite
11. The branch bark ridge is:
A. A wound site
B. Decayed tissue
C. Natural line between branch and trunk
D. A vascular connection
12. Why is mulching around trees beneficial?
A. Adds color
B. Conserves moisture and moderates soil temperature
Test Questions and
Answers |
100% Verified Answers
1. What is the most important factor when planting a tree?
A. Amount of rainfall
B. Proper planting depth
C. Fertilizer type
D. Leaf shape
2. Which of the following is an essential macronutrient for trees?
A. Iron
B. Nitrogen
C. Zinc
D. Boron
,3. What is the ideal time of year to prune most deciduous trees?
A. Mid-summer
B. Late winter
C. Early autumn
D. Late spring
4. What is the first step in diagnosing a tree problem?
A. Apply insecticide
B. Remove the tree
C. Identify the tree species
D. Prune affected limbs
5. Which type of pruning removes entire branches at their origin?
A. Thinning
B. Heading
C. Pollarding
D. Topping
6. What is the critical root zone (CRZ)?
A. Area within the dripline
B. Area 1 ft radius per inch of trunk diameter
C. Top 10 inches of the soil
D. Base of the trunk
7. A soil compaction issue is most likely to affect:
A. Leaf color
B. Root growth and water uptake
C. Bark structure
D. Flowering
, 8. Which pruning technique can cause decay and weak branch structure?
A. Drop-crotch pruning
B. Crown cleaning
C. Topping
D. Crown raising
9. The main function of xylem is to:
A. Produce energy
B. Store starch
C. Transport water and nutrients upward
D. Provide food for the roots
10. Which disease is caused by a fungus?
A. Dutch elm disease
B. Emerald ash borer
C. Aphid infestation
D. Spider mite
11. The branch bark ridge is:
A. A wound site
B. Decayed tissue
C. Natural line between branch and trunk
D. A vascular connection
12. Why is mulching around trees beneficial?
A. Adds color
B. Conserves moisture and moderates soil temperature
