ISA Arborist Certification Practice Exams Part 1 Questions With Correct Answers

ISA Arborist Certification Practice Exams
Part 1 Questions With Correct Answers

The |ideal |soil |ratio |for |solids |to |pore |space |is:

(A) |20:80 |(B) |35:65 |(C) |40:60 |(D) |50:50 |- |CORRECT |ANSWER✔✔-D



What |is |the |correct |scientific |name |for |the |oak |tree |genus?

(A) |Quercus |(B) |Pyrus |(C) |Larix |(D) |Acer |- |CORRECT |ANSWER✔✔-A



Which |of |the |following |is |not |one |of |the |five |major |categories |of |soil |horizons?

(A) |O |(B) |E |(C) |N |(D) |B |- |CORRECT |ANSWER✔✔-C



Loam |is |least |composed |of |what |soil |classification?

(A) |Sand(B) |Silt(C) |Clay(D) |Loam |is |composed |of |all |soils |evenly |- |CORRECT |ANSWER✔✔-C



What |is |the |difference |in |magnitude |of |acidity |between |a |PH |level |reading |of |4 |vs. |a |PH |
reading |of |7?

(A) |1(B) |3(C) |100 |(D) |1000 |- |CORRECT |ANSWER✔✔-D



What |is |not |a |detrimental |impact |on |tree |growth |from |compaction?

(A) |Restricted |root |growth

(B) |Reduction |of |water |availability |

(C) |Increasing |organic |material |

(D) |Restricting |air |movement |- |CORRECT |ANSWER✔✔-C

,Field |capacity |is |achieved |after |the |draining |of |which |of |the |following?

(A) |Gravitational |water |

(B) |Capillary |water

(C) |Micropore |water

(D) |Compacted |drainage |- |CORRECT |ANSWER✔✔-A



What |best |defines |the |permanent |wilting |point |soil |moisture |condition?

(A) |Water |is |present |in |macro |and |micropores

(B) |The |condition |present |immediately |after |the |removal |of |gravitational |water |

(C) |Water |is |held |by |soil |but |unavailable |to |plants |such |that |they |can't |recover |

(D) |No |water |present |in |soil |- |CORRECT |ANSWER✔✔-C



What |soil |below |most |likely |has |the |lowest |infiltration |rate?

(A) |Loose |sand

(B) |Compacted |sand |

(C) |Loose |clay

(D) |Compacted |clay |- |CORRECT |ANSWER✔✔-D



What |major |soil |horizon |category |is |not |included |in |the |zone |designated |as |topsoil?

(A) |A |(B) |O |(C) |E |(D) |C |- |CORRECT |ANSWER✔✔-D



What |soil |type |is |most |easily |compacted?

(A) |Sand(B) |Clay(C) |Silt(D) |Bedrock |- |CORRECT |ANSWER✔✔-B



What |is |not |a |tree |characteristic |which |helps |to |prevent |the |loss |of |water?

,(A) |Increased |leaf |surface |area |(B) |Deep |root |systems(C) |Leaf |hairs(D) |Waxy |outer |leaf |layer |- |
CORRECT |ANSWER✔✔-A



What |irrigation |system |type |provides |water |slowly |to |specific |areas |of |the |tree |root |zone?

(A) |Drip |irrigation(B) |High-pressure |injection |(C) |Basin |irrigation

(D) |Soaker |hose |- |CORRECT |ANSWER✔✔-A



Trees |help |to |control |stormwater |runoff |by |all |of |the |following |means |except:

(A) |Trees |hold |water |on |bark |and |leaves

(B) |Roots |intercept |and |retain |runoff

(C) |Fallen |leaves |create |a |layer |of |absorption |on |the |ground |

(D) |All |of |the |above |- |CORRECT |ANSWER✔✔-D



What |is |not |an |advantage |of |the |use |of |mulching?

(A) |Improve |infiltration

(B) |Promote |deep |root |system |

(C) |Reduce |soil |evaporation |

(D) |Limit |weed |competition |- |CORRECT |ANSWER✔✔-B



What |is |the |minimum |slope |for |drainage |pipes |placed |above |an |impervious |layer?

(A) |1/16" |per |ft |(B) |1/8" |per |ft |(C) |1/4" |per |ft |(D) |1/2" |per |ft |- |CORRECT |ANSWER✔✔-C



The |main |function |of |a |rain |garden |is |which |of |the |following?

(A) |Collect |and |hold |stormwater |runoff |

(B) |Increase |water |infiltration

(C) |Distribute |runoff |to |dry |areas

, (D) |Facilitate |deep |root |systems |- |CORRECT |ANSWER✔✔-A



What |macronutrient |most |often |has |the |largest |requirement |for |the |health |of |trees?

(A) |Iron(B) |Sulfur(C) |Potassium |(D) |Nitrogen |- |CORRECT |ANSWER✔✔-D



What |essential |element |is |more |readily |available |in |an |acidic |environment |than |alkaline?

(A) |Iron(B) |Calcium |(C) |Sulfur |(D) |Potassium |- |CORRECT |ANSWER✔✔-A



Required |fertilizer |distribution |rates |for |quick |release |are |______________ |than |for |that |of |
slow-release.

(A) |Greater(B) |Less(C) |Equal(D) |No |relationship |- |CORRECT |ANSWER✔✔-B



What |project |factor |listed |below |has |a |detrimental |effect |on |the |surface |application |of |
fertilizer?

(A) |Constrained |time(B) |Inexperienced |workers |(C) |Surface |runoff(D) |Shallow |root |structure |- |
CORRECT |ANSWER✔✔-C



What |element |can |be |classified |as |a |micronutrient?

(A) |Magnesium |(B) |Calcium(C) |Iron(D) |Sulfur |- |CORRECT |ANSWER✔✔-C



What |method |of |fertilizer |application |may |result |in |the |development |of |thick |patches |of |grass |
in |spots |surrounding |the |tree?

(A) |Liquid |injection(B) |Surface |application |(C) |Foliar |application |(D) |Implants |- |CORRECT |
ANSWER✔✔-A



What |characteristic |is |used |to |differentiate |between |vascular |plant |classifications?

(A) |Roots |(B) |Leaves |(C) |Seeds |(D) |Skin |- |CORRECT |ANSWER✔✔-C