Arborist Certification Study Guide
Questions and Answers 100% Pass
Meristem - ANSWER✔✔-Sites of rapid cell division in the shoot tips, root tips, and cambium.
Apical meristem - ANSWER✔✔-Meristems located at the end of the shoot are called primary, or
_________ meristems
Scales - ANSWER✔✔-Buds are covered by _____________ that leave permanent scars on the twig when
the buds break dormancy. These scars can be useful in tree ID.
Apical dominance - ANSWER✔✔-The tendency for terminal buds to inhibit the growth of lateral buds is
called ______________.
Leaves - ANSWER✔✔-The food factories of trees are the ____________.
Photosynthesis & Oxygen - ANSWER✔✔-The process of _____________ combines carbon dioxide and
water in a reaction driven by light to produce sugars. _________ is also a product of this reaction.
Chlorophyll - ANSWER✔✔-The green color of leaves is created by the presence of _____________, which
is necessary for photosynthesis to take place.
Transpiration - ANSWER✔✔-___________ is the loss of water vapor from the leaves.
Stomata & Guard Cells - ANSWER✔✔-The opening and closing of _________ allows for gas exchange,
and transpiration is controlled by the ___________.
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Xylem & Phloem - ANSWER✔✔-Water and dissolved essential minerals are transported within the tree in
the ___________. The ____________ conducts carbohydrates.
Cambium - ANSWER✔✔-The ______________ is a layer of meristematic cells located between the
phloem and the xylem.
Branch collar & Branch bark ridge - ANSWER✔✔-The ______ ________ is formed when trunk tissue
grows around branch tissues. As the branch and trunk tissues expand against each other in the crotch,
the __________ ______ ________ is formed.
Bark - ANSWER✔✔-___________ protects the branches and trunk of a tree from mechanical injury and
desiccation.
Absorption, conduction, anchorage, and storage. - ANSWER✔✔-Name four functions of the root system>
Osmosis - ANSWER✔✔-Water enters young roots or mycorrhizal roots by a process called
______________.
Tropism, Phototropism & Geotropism - ANSWER✔✔-The orientation of growth in response to an
external stimulus is called _____________. Two examples are ___________ and ____________.
CODIT - ANSWER✔✔-Compartmentalization Of Decay In Trees
Excurrent & Decurrent - ANSWER✔✔-Trees with upright growth and a strong, central leader are said to
exhibit ______________ growth. More rounded trees, which are often broader than they are tall, have
______________ growth habits.
Mycorrhizae - ANSWER✔✔-Roots and fungi called ___________ exist in a symbiotic relationship, which
aids in the uptake of water and minerals.
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Respiration - ANSWER✔✔-The process by which chemical energy, stored as sugar and starch, is released
is called ______________.
Deciduous & Evergreen - ANSWER✔✔-Trees that lose their leaves in the fall are called _________. Trees
that maintain their leaves for more than one year are called ___________.
Twig anatomy - ANSWER✔✔-twig anatomy
Cross section of young stem - ANSWER✔✔-Stem anatomy
Auxin - ANSWER✔✔-A plant hormone
Cuticle - ANSWER✔✔-Waxy covering of a leaf
Petiole - ANSWER✔✔-Stalk of a leaf
Internode - ANSWER✔✔-Between the nodes of a twig.
Lenticel - ANSWER✔✔-Small openings in stems for gas exchange.
Ray - ANSWER✔✔-Cells that cross the phloem and xylem for radial transport.
Absorbing roots - ANSWER✔✔-mostly located in the upper 12 inches of soil.
Source - ANSWER✔✔-Mature, green leaves -- sugar producers.
Sink - ANSWER✔✔-Uses more energy than it produces.
Taxonomy - ANSWER✔✔-The classification of plants is called __________.
Kingdom
Phylum
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Class
Order
Family
Genus
Species epithet - ANSWER✔✔-List the levels of plant classification. The first letter of each term is given.
Angiosperms and Gymnosperms - ANSWER✔✔-___________ are vascular plants whose seeds are
covered (by an ovary). __________ are vascular plants with "naked seeds".
Monocotyledons (or monocots) - ANSWER✔✔-The term "dicotyledon (dicot)" refers to plants that have
two seed leaves at germination. Grasses and palm trees belong to another group called _________ and
have only one seed leaf.
Nomenclature - ANSWER✔✔-The naming of plants is called ___________.
Form or growth habit
Bark texture
Leaves
Flowers
Fruit
Seed
Buds
Leaf scars
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