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ISA Certified Arborist Exam Questions and Answers: A Comprehensive Guide to Tree Care, Exams of Nursing

A comprehensive set of questions and answers related to the isa certified arborist exam. It covers a wide range of topics, including tree physiology, soil science, tree health, and tree care practices. A valuable resource for anyone preparing for the isa certified arborist exam or seeking to deepen their understanding of arboriculture.

Typology: Exams

2024/2025

Available from 02/15/2025

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ISA Certified Arborist Exam Questions &
Answers
Chlorophyll - ANSWERSMakes the color or the leaves green so photosynthesis can
take place
Transpiration - ANSWERSloss of water vapor from leaves
Bark - ANSWERSprotects branches & trunk of tree from injury
Excurrent Growth - ANSWERSOrientation of growth in external cell
M.A.D.HORSE - ANSWERSOpposite leaf arrangement
MAPLE
ASH
DOGWOOD
HORSECHESTNUT
pH - ANSWERSMeasure of acidity or alkaline from 0 to 14
<7 acidic 7> Alkaline
7 Neutral
Decurrent Growth - ANSWERSrounded or broader tree growth
Deciduous - ANSWERSloss of leaves in the fall
Respiration - ANSWERSprocess of converting food into energy
Stomata - ANSWERSpours in leaves that open and close to allow for water
transportation
Xylem - ANSWERStransportation for the water and minerals throughout the tree
Phloem - ANSWERSConducts Carbohydrates
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ISA Certified Arborist Exam Questions &

Answers

Chlorophyll - ANSWERSMakes the color or the leaves green so photosynthesis can take place Transpiration - ANSWERSloss of water vapor from leaves Bark - ANSWERSprotects branches & trunk of tree from injury Excurrent Growth - ANSWERSOrientation of growth in external cell M.A.D.HORSE - ANSWERSOpposite leaf arrangement MAPLE ASH DOGWOOD HORSECHESTNUT pH - ANSWERSMeasure of acidity or alkaline from 0 to 14 <7 acidic 7> Alkaline 7 Neutral Decurrent Growth - ANSWERSrounded or broader tree growth Deciduous - ANSWERSloss of leaves in the fall Respiration - ANSWERSprocess of converting food into energy Stomata - ANSWERSpours in leaves that open and close to allow for water transportation Xylem - ANSWERStransportation for the water and minerals throughout the tree Phloem - ANSWERSConducts Carbohydrates

Osmosis - ANSWERSProcess how water enters roots Organic Matter - ANSWERSorganic components that are decaying matter to help increase water holding & nutrients to improve soil structure Cation Exchange Capacity (CEC) - ANSWERSmeasure of soils capacity to attract, retain & exchange a positive charge Girdling Roots - ANSWERSroots that grow across or around the trunk, potentially choking off vascular tissues in a tree. May cause decline or death Taxonomy - ANSWERSClassification of plants Levels of Classification - ANSWERSKingdom > Phylum > Class > Order > Family > Genus > Species > Specific epithet Angiosperm - ANSWERSflowering plant Gymnosperm - ANSWERSCone bearing plants and gingco Cultivar - ANSWERSCultivated Variety for a tree/shrub Monocot - ANSWERSone seed leaf Drill Hole Method - ANSWERSaerates the soil 2-4 inches into ground around drip line and uses granular fertilizer. Surface Application - ANSWERSapplied fertilizer over surface using spreader Apical Meristems - ANSWERSlocated at the end of the shoot Apical Dominance - ANSWERStendency for terminal buds to inhibit growth of lateral buds CODIT - ANSWERSCompartmentalization Of Decay In Trees or 4 Steps trees use to heal itself from decay Photosynthesis - ANSWERSprocess that a tree/plant uses to create food/energy Leaves - ANSWERSFood factories Cambium - ANSWERSlayer of cells located between the phloem & xylem Urea-formalehyde - ANSWERSslow, soluble, synthetic fertilizer

Water Holding Capacity - ANSWERSamount of water held in soil after drainage occures Soil Testing - ANSWERSprovides info about the pH of a soil & can tell you how much or how little fert. is needed Acclimation - ANSWERSgradual process by which a tree changes in its environment Slow Release Ferts - ANSWERSrelease nutrients & nitrogen slowly over a period of time into the soil Nomenclature - ANSWERSnaming of plants Macronutrient - ANSWERSelements like copper, chlorine, boron required by trees in large quantities Injections - ANSWERSintroduces fert. directly into xylem of tree Liquid Injection - ANSWERShydraulic spraying method into soil Hardiness - ANSWERSability of a tree to withstand low temps & winter stress Compartmentalization - ANSWERSnatural process of defense in trees by which they wall off decay in wood Co-dominate Stems - ANSWERSwhen 2 stems of the qual size arise from a union Topping - ANSWERScutting off the crown of a tree Cations - ANSWERSelements dissolved into water that become positively charged particles Dicotyledon - ANSWERStwo seed leaves at germination