ISA Certified Arborist Exam Questions with
Verified Correct Answers
Chlorophyll
Makes the color or the leaves green so photosynthesis can take place
Transpiration
loss of water vapor from leaves
Bark
protects branches & trunk of tree from injury
Excurrent Growth
Orientation of growth in external cell
M.A.D.HORSE
Opposite leaf arrangement
MAPLE
ASH
DOGWOOD
HORSECHESTNUT
pH
Measure of acidity or alkaline from 0 to 14
<7 acidic 7> Alkaline
7 Neutral
Decurrent Growth
, rounded or broader tree growth
Deciduous
loss of leaves in the fall
Respiration
process of converting food into energy
Stomata
pours in leaves that open and close to allow for water transportation
Xylem
transportation for the water and minerals throughout the tree
Phloem
Conducts Carbohydrates
Osmosis
Process how water enters roots
Organic Matter
organic components that are decaying matter to help increase water holding & nutrients to
improve soil structure
Cation Exchange Capacity (CEC)
measure of soils capacity to attract, retain & exchange a positive charge
Girdling Roots
Verified Correct Answers
Chlorophyll
Makes the color or the leaves green so photosynthesis can take place
Transpiration
loss of water vapor from leaves
Bark
protects branches & trunk of tree from injury
Excurrent Growth
Orientation of growth in external cell
M.A.D.HORSE
Opposite leaf arrangement
MAPLE
ASH
DOGWOOD
HORSECHESTNUT
pH
Measure of acidity or alkaline from 0 to 14
<7 acidic 7> Alkaline
7 Neutral
Decurrent Growth
, rounded or broader tree growth
Deciduous
loss of leaves in the fall
Respiration
process of converting food into energy
Stomata
pours in leaves that open and close to allow for water transportation
Xylem
transportation for the water and minerals throughout the tree
Phloem
Conducts Carbohydrates
Osmosis
Process how water enters roots
Organic Matter
organic components that are decaying matter to help increase water holding & nutrients to
improve soil structure
Cation Exchange Capacity (CEC)
measure of soils capacity to attract, retain & exchange a positive charge
Girdling Roots