ISA Certified Arborist Exam Questions and Answers / Graded A

ISA Certified Arborist Exam Questions
and Answers



Chlorophyll - Correct Answers -Makes the color or the leaves green so photosynthesis
can take place

Transpiration - Correct Answers -loss of water vapor from leaves

Injections - Correct Answers -introduces fert. directly into xylem of tree

Liquid Injection - Correct Answers -hydraulic spraying method into soil

Hardiness - Correct Answers -ability of a tree to withstand low temps & winter stress

Compartmentalization - Correct Answers -natural process of defense in trees by which
they wall off decay in wood

Co-dominate Stems - Correct Answers -when 2 stems of the qual size arise from a
union

Bark - Correct Answers -protects branches & trunk of tree from injury

Excurrent Growth - Correct Answers -Orientation of growth in external cell

M.A.D.HORSE - Correct Answers -Opposite leaf arrangement
MAPLE
ASH
DOGWOOD
HORSECHESTNUT

pH - Correct Answers -Measure of acidity or alkaline from 0 to 14
<7 acidic 7> Alkaline
7 Neutral

Decurrent Growth - Correct Answers -rounded or broader tree growth

Deciduous - Correct Answers -loss of leaves in the fall

Respiration - Correct Answers -process of converting food into energy