©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
Arborist ISA Certified Exam Questions
and Answers 100% Solved | Graded A+
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
, ©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
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 - ✔✔roots that grow across or around the trunk, potentially
choking off vascular tissues in a tree. May cause decline or death
Taxonomy - ✔✔Classification of plants
Levels of Classification - ✔✔Kingdom > Phylum > Class > Order > Family >
Genus > Species > Specific epithet
Angiosperm - ✔✔flowering plant
Gymnosperm - ✔✔Cone bearing plants and gingco
Arborist ISA Certified Exam Questions
and Answers 100% Solved | Graded A+
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
, ©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
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 - ✔✔roots that grow across or around the trunk, potentially
choking off vascular tissues in a tree. May cause decline or death
Taxonomy - ✔✔Classification of plants
Levels of Classification - ✔✔Kingdom > Phylum > Class > Order > Family >
Genus > Species > Specific epithet
Angiosperm - ✔✔flowering plant
Gymnosperm - ✔✔Cone bearing plants and gingco
