ISA Certified Arborist Exam

ISA Certified Arborist Exam

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> 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 Carbohydrate