1
ISA Certified Arborist - Chapter 1 Exam (Latest 2025 /
2026 Update) Questions and Verified Answers | 100%
Correct | Grade A+
Tree biology - ...(ANSWERS)....The study of structure and function of trees and
the relationship between them.
(pg 3)
Cells - ...(ANSWERS)....Basic building blocks of structure
(plural)
(pg 3)
Mitosis - ...(ANSWERS)....Process of cell division used to create new cells in
plants. Genetically identical.
(FCHP)
Differentiation - ...(ANSWERS)....Process by which cells change their structure and
specialize in a particular function.
(pg 3)
, 2
Tissues - ...(ANSWERS)....Cells grouped together with similar structure and
function.
(plural)
(pg 3)
Organs - ...(ANSWERS)....Organized tissues that provides a particular function to
the plant
(plural)
(pg 3)
Leaves, Stems, Roots, Flowers, Fruit - ...(ANSWERS)....What are the 5 organs of a
tree:
Format answer in the form of:
______, _____, _____, _______, _____
(plural)
(pg 3)
Organs, Tissues, Specialized Cells, Differentiation, Mitosis - ...(ANSWERS)....Trees
are composed of ______
Organs are made up of _______
, 3
Tissues are groups of ___________ ____
Specialized Cells are created via _______________
Cells undergo Differentiation after they are created by the process of _______
Format answer in the form of:
______, _______, ___________ ____, _______________, _______
(plural)
(pg 3, FCHP)
Primary Growth - ...(ANSWERS)....The type of growth occurring from Apical
Meristems
(pg 3)
Primary Growth - ...(ANSWERS)....The type of growth that results in the
elongation of shoots and roots
(pg 3)
Apical Meristem - ...(ANSWERS)....The meristem located at the tip of a shoot or a
root.
a.k.a. Primary Meristem
, 4
(singular)
(pg 4)
Secondary Growth - ...(ANSWERS)....The type of growth occurring from secondary
meristems.
(pg 4)
Secondary Growth - ...(ANSWERS)....The type of growth that results in the
widening / increase in diameter of stems, branches, and roots.
(pg 4)
Secondary Growth - ...(ANSWERS)....The type of growth that produces the wood
of trees
(pg 3 & 4)
Secondary Meristem - ...(ANSWERS)....The type of meristem that produces
Secondary Growth
a.k.a Lateral Meristem
(singular)
ISA Certified Arborist - Chapter 1 Exam (Latest 2025 /
2026 Update) Questions and Verified Answers | 100%
Correct | Grade A+
Tree biology - ...(ANSWERS)....The study of structure and function of trees and
the relationship between them.
(pg 3)
Cells - ...(ANSWERS)....Basic building blocks of structure
(plural)
(pg 3)
Mitosis - ...(ANSWERS)....Process of cell division used to create new cells in
plants. Genetically identical.
(FCHP)
Differentiation - ...(ANSWERS)....Process by which cells change their structure and
specialize in a particular function.
(pg 3)
, 2
Tissues - ...(ANSWERS)....Cells grouped together with similar structure and
function.
(plural)
(pg 3)
Organs - ...(ANSWERS)....Organized tissues that provides a particular function to
the plant
(plural)
(pg 3)
Leaves, Stems, Roots, Flowers, Fruit - ...(ANSWERS)....What are the 5 organs of a
tree:
Format answer in the form of:
______, _____, _____, _______, _____
(plural)
(pg 3)
Organs, Tissues, Specialized Cells, Differentiation, Mitosis - ...(ANSWERS)....Trees
are composed of ______
Organs are made up of _______
, 3
Tissues are groups of ___________ ____
Specialized Cells are created via _______________
Cells undergo Differentiation after they are created by the process of _______
Format answer in the form of:
______, _______, ___________ ____, _______________, _______
(plural)
(pg 3, FCHP)
Primary Growth - ...(ANSWERS)....The type of growth occurring from Apical
Meristems
(pg 3)
Primary Growth - ...(ANSWERS)....The type of growth that results in the
elongation of shoots and roots
(pg 3)
Apical Meristem - ...(ANSWERS)....The meristem located at the tip of a shoot or a
root.
a.k.a. Primary Meristem
, 4
(singular)
(pg 4)
Secondary Growth - ...(ANSWERS)....The type of growth occurring from secondary
meristems.
(pg 4)
Secondary Growth - ...(ANSWERS)....The type of growth that results in the
widening / increase in diameter of stems, branches, and roots.
(pg 4)
Secondary Growth - ...(ANSWERS)....The type of growth that produces the wood
of trees
(pg 3 & 4)
Secondary Meristem - ...(ANSWERS)....The type of meristem that produces
Secondary Growth
a.k.a Lateral Meristem
(singular)
