Isa Arborist Certification Test Questions And Correct Answers Latest This Year

ISA Arborist Certification Test QUESTIONS AND
CORRECT ANSWERS LATEST THIS YEAR - NEW!
QUESTION: What herbicide type eliminates the whole of the plant over a short period of time?
PEB Pg43

- Pre-emergent

- Contact

- Systemic

- Drench -ANSWER-systemic



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



QUESTION: What is most likely NOT a possible cause of deformed leaves? PEB pg 42

- spray injury

- air pollution

- anthracnose

- frost -ANSWER-Air pollution



QUESTION: 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



QUESTION: What insect listed below is classified as having piercing or sucking mouthparts? PEB
Pg43

- leafhoppers

- Beetles

- weevils

- borers -ANSWER-leafhoppers




QUESTION: 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



QUESTION: Which of the following is NOT classified as an insect? PEB Pg43

- Mites

- Beetles

- Moths

- Caterpillars -ANSWER-Mites



QUESTION: 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



QUESTION: 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



QUESTION: 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



QUESTION: What is not one of the primary functions of the energy produced by
photosynthesis? PEB Pg44

- maintenance

- growth

- aesthetics

- defense -ANSWER-aesthetics



QUESTION: 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



QUESTION: 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



QUESTION: What extract listed below is NOT an allelochemical classified as a natural
insecticide? PEB Pg45

- Nicotine

- Lignin

- Rotenone

- Neem -ANSWER-Lignin



QUESTION: A tree is identified as being in the mortality spiral when what has occurred? PEB
Pg45

- the tree has begun to see detrimental stress factors

- the tree has seen an isolated but severely detrimental stress factor

- Cumulative stress factors have yielded a situation where very few actions can save the tree.