Copyright © KAYLIN 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH NOVEMBER, 2024
ISA - Certified Arborist - Test Questions #2
– PRF with Correct Answers
What example of tree stressors can be classified as acute? PEB Pg42
- Lightning strike
- insufficient soil
- poor light exposure
- poor moisture conditions - ANSWER✔✔-lightning strike
What is most likely NOT a possible cause of deformed leaves? PEB pg 42
- spray injury
- air pollution
- anthracnose
- frost - ANSWER✔✔-Air pollution
What tree symptom is NOT likely to be caused by insect infestation? PEB Pg42
- leaf droop
- yellow specks
- off-color foliage
- leaves with a scorched appearance - ANSWER✔✔-Leaves with a scorched appearance
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What insect listed below is classified as having piercing or sucking mouthparts? PEB Pg43
- leafhoppers
- Beetles
- weevils
- borers - ANSWER✔✔-leafhoppers
What herbicide type eliminates the whole of the plant over a short period of time? PEB Pg43
- Pre-emergent
- Contact
- Systemic
- Drench - ANSWER✔✔-systemic
If a tree is suffering from girdling root, what is most likely NOT an advisable action? PEB Pg43
- Remove the largest roots first
- Remove only the smallest roots
- Remove the tree
- None of the above - ANSWER✔✔-Remove the largest roots first
Which of the following is NOT classified as an insect? PEB Pg43
- Mites
- Beetles
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- Moths
- Caterpillars - ANSWER✔✔-Mites
What statement below is FALSE regarding vascular disease? PEB Pg44
- Examples include Dutch elm disease and oak wilt
- it is treatable if found in a reasonable timeframe
- it affects the flow of water and nutrients
- it originates from pathogens entering the plant - ANSWER✔✔-it is treatable if found in a reasonable
timeframe
Cellulose and lignin are a defense mechanism against predators by what means? PEB Pg44
- they give off an unfavorable flavor
- They can't be digested
- they have a poor taste
- They are toxic - ANSWER✔✔-They can't be digested
A tree exhibits wounded areas of the lower trunk and some physical damage to surface roots. What is
most likely the cause of injury? PEB Pg44
- Frost
- Poor soil conditions
- Lawnmower or machinery
- disease - ANSWER✔✔-lawnmower or machinery
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What is not one of the primary functions of the energy produced by photosynthesis? PEB Pg44
- maintenance
- growth
- aesthetics
- defense - ANSWER✔✔-aesthetics
What statement below is TRUE regarding how a tree's growth rate and photosynthesis rate will react to
the amount of available resources? PEB Pg45
- The growth rate will be limited before the photosynthesis rate
- The photosynthesis rate will be limited before the growth rate
- The photosynthesis and growth rate become hindered equally with
limited resources
- The photosynthesis rate will not be hindered by limited resources - ANSWER✔✔-The growth rate will
be limited before the photosynthesis rate
What single resource has the most detrimental effect on a tree's ability to perform photosynthesis if
limited? PEB Pg45
- Light
- Water
- CO2
- None of the above - ANSWER✔✔-None of the above
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ISA - Certified Arborist - Test Questions #2
– PRF with Correct Answers
What example of tree stressors can be classified as acute? PEB Pg42
- Lightning strike
- insufficient soil
- poor light exposure
- poor moisture conditions - ANSWER✔✔-lightning strike
What is most likely NOT a possible cause of deformed leaves? PEB pg 42
- spray injury
- air pollution
- anthracnose
- frost - ANSWER✔✔-Air pollution
What tree symptom is NOT likely to be caused by insect infestation? PEB Pg42
- leaf droop
- yellow specks
- off-color foliage
- leaves with a scorched appearance - ANSWER✔✔-Leaves with a scorched appearance
Copyright ©Stuvia International BV 2010-2024 Page 1/83
,Copyright © KAYLIN 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH NOVEMBER, 2024
What insect listed below is classified as having piercing or sucking mouthparts? PEB Pg43
- leafhoppers
- Beetles
- weevils
- borers - ANSWER✔✔-leafhoppers
What herbicide type eliminates the whole of the plant over a short period of time? PEB Pg43
- Pre-emergent
- Contact
- Systemic
- Drench - ANSWER✔✔-systemic
If a tree is suffering from girdling root, what is most likely NOT an advisable action? PEB Pg43
- Remove the largest roots first
- Remove only the smallest roots
- Remove the tree
- None of the above - ANSWER✔✔-Remove the largest roots first
Which of the following is NOT classified as an insect? PEB Pg43
- Mites
- Beetles
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,Copyright © KAYLIN 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH NOVEMBER, 2024
- Moths
- Caterpillars - ANSWER✔✔-Mites
What statement below is FALSE regarding vascular disease? PEB Pg44
- Examples include Dutch elm disease and oak wilt
- it is treatable if found in a reasonable timeframe
- it affects the flow of water and nutrients
- it originates from pathogens entering the plant - ANSWER✔✔-it is treatable if found in a reasonable
timeframe
Cellulose and lignin are a defense mechanism against predators by what means? PEB Pg44
- they give off an unfavorable flavor
- They can't be digested
- they have a poor taste
- They are toxic - ANSWER✔✔-They can't be digested
A tree exhibits wounded areas of the lower trunk and some physical damage to surface roots. What is
most likely the cause of injury? PEB Pg44
- Frost
- Poor soil conditions
- Lawnmower or machinery
- disease - ANSWER✔✔-lawnmower or machinery
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, Copyright © KAYLIN 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH NOVEMBER, 2024
What is not one of the primary functions of the energy produced by photosynthesis? PEB Pg44
- maintenance
- growth
- aesthetics
- defense - ANSWER✔✔-aesthetics
What statement below is TRUE regarding how a tree's growth rate and photosynthesis rate will react to
the amount of available resources? PEB Pg45
- The growth rate will be limited before the photosynthesis rate
- The photosynthesis rate will be limited before the growth rate
- The photosynthesis and growth rate become hindered equally with
limited resources
- The photosynthesis rate will not be hindered by limited resources - ANSWER✔✔-The growth rate will
be limited before the photosynthesis rate
What single resource has the most detrimental effect on a tree's ability to perform photosynthesis if
limited? PEB Pg45
- Light
- Water
- CO2
- None of the above - ANSWER✔✔-None of the above
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