() ISA Arborist Certification Test Questions and
Verified Rationalized Answers, 100% Guaranteed Passing
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1. The ideal soil ratio for solids to pore space is:
ji ji ji ji ji ji ji ji ji
(A) 20:80
ji ji
(B) 35:65
ji ji
(C) 40:60
ji ji
(D) 50:50
ji
…Ans>> D ji
2. What is the correct scientific name for the oak tree genus?
ji ji ji ji ji ji ji ji ji ji
(A) Quercus
ji ji
(B) Pyrus
ji ji
(C) Larix
ji ji
,(D) Acerji
…Ans>> A jiji
3. Which of the following is not one of the five major categories of soil hori-
ji ji ji ji ji ji ji ji ji ji ji ji ji ji
ji zons?
(A) O ji ji
(B) E ji ji
(C) N ji ji
(D) B ji
…Ans>> C jiji
4. Loam is least composed of what soil classification?
ji ji ji ji ji ji ji
(A) Sandji
(B) Silt
ji
(C) Clayji
(D) Loam is composed of all soils evenly
ji ji ji ji ji ji ji
…Ans>> C jiji
,5. What is the difference in magnitude of acidity between a PH level reading of
ji ji ji ji ji ji ji ji ji ji ji ji ji
ji 4 vs. a PH reading of 7?
ji ji ji ji ji ji
(A) 1 ji
(B) 3 ji
(C) 100 ji ji
(D) 1000 ji
…Ans>> D jiji
6. What is not a detrimental impact on tree growth from compaction?
ji ji ji ji ji ji ji ji ji ji
(A) Restricted root growth ji ji
(B) Reduction of water availability ji ji ji
(C) Increasing organic material ji ji
(D) Restricting air movement ji ji
…Ans>> C jiji
7. Field capacity is achieved after the draining of which of the following?
ji ji ji ji ji ji ji ji ji ji ji
, (A) Gravitational water ji
(B) Capillary water ji
(C) Micropore water ji
(D) Compacted drainage ji
…Ans>> A jiji
8. What best defines the permanent wilting point soil moisture condition?
ji ji ji ji ji ji ji ji ji
(A) Water is present in macro and micropores
ji ji ji ji ji ji
(B) Theconditionpresentimmediatelyaftertheremovalofgravitationalwater
ji ji ji ji ji ji ji ji ji
(C) Waterisheldbysoilbutunavailabletoplantssuchthattheycan'trecover
ji ji ji ji ji ji ji ji ji ji ji ji ji
(D) No water present in soil
ji ji ji ji
…Ans>> C jijiji
9. What soil below most likely has the lowest infiltration rate?
ji ji ji ji ji ji ji ji ji
(A) Loose sand ji
(B) Compacted sand ji
(C) Loose clay ji
Verified Rationalized Answers, 100% Guaranteed Passing
Score
1. The ideal soil ratio for solids to pore space is:
ji ji ji ji ji ji ji ji ji
(A) 20:80
ji ji
(B) 35:65
ji ji
(C) 40:60
ji ji
(D) 50:50
ji
…Ans>> D ji
2. What is the correct scientific name for the oak tree genus?
ji ji ji ji ji ji ji ji ji ji
(A) Quercus
ji ji
(B) Pyrus
ji ji
(C) Larix
ji ji
,(D) Acerji
…Ans>> A jiji
3. Which of the following is not one of the five major categories of soil hori-
ji ji ji ji ji ji ji ji ji ji ji ji ji ji
ji zons?
(A) O ji ji
(B) E ji ji
(C) N ji ji
(D) B ji
…Ans>> C jiji
4. Loam is least composed of what soil classification?
ji ji ji ji ji ji ji
(A) Sandji
(B) Silt
ji
(C) Clayji
(D) Loam is composed of all soils evenly
ji ji ji ji ji ji ji
…Ans>> C jiji
,5. What is the difference in magnitude of acidity between a PH level reading of
ji ji ji ji ji ji ji ji ji ji ji ji ji
ji 4 vs. a PH reading of 7?
ji ji ji ji ji ji
(A) 1 ji
(B) 3 ji
(C) 100 ji ji
(D) 1000 ji
…Ans>> D jiji
6. What is not a detrimental impact on tree growth from compaction?
ji ji ji ji ji ji ji ji ji ji
(A) Restricted root growth ji ji
(B) Reduction of water availability ji ji ji
(C) Increasing organic material ji ji
(D) Restricting air movement ji ji
…Ans>> C jiji
7. Field capacity is achieved after the draining of which of the following?
ji ji ji ji ji ji ji ji ji ji ji
, (A) Gravitational water ji
(B) Capillary water ji
(C) Micropore water ji
(D) Compacted drainage ji
…Ans>> A jiji
8. What best defines the permanent wilting point soil moisture condition?
ji ji ji ji ji ji ji ji ji
(A) Water is present in macro and micropores
ji ji ji ji ji ji
(B) Theconditionpresentimmediatelyaftertheremovalofgravitationalwater
ji ji ji ji ji ji ji ji ji
(C) Waterisheldbysoilbutunavailabletoplantssuchthattheycan'trecover
ji ji ji ji ji ji ji ji ji ji ji ji ji
(D) No water present in soil
ji ji ji ji
…Ans>> C jijiji
9. What soil below most likely has the lowest infiltration rate?
ji ji ji ji ji ji ji ji ji
(A) Loose sand ji
(B) Compacted sand ji
(C) Loose clay ji
