ISA Arborist Certification Study Guide
Chapter 1
Meristems - correct answer Sites of rapid cell division in the shoot tips, root tips, and
cambium are called ____________.
Apical - correct answer Meristems located at the end of the shoots are called primary
or __________ meristems.
Apical dominance - correct answer The tendency for terminal buds to inhibit the
growth of lateral buds is called __________.
Leaves - correct answer The "food factories" of trees are the _________.
Photosynthesis, Oxygen - correct answer The procress of ___________ combines
carbon dioxide and water in the reaction driven by light to produce sugars. __________
is also a product of this reaction.
Chlorophyll - correct answer The green color of leaves is created by the presence of
_________, which is necessary for photosynthesis.
Transpiration - correct answer ___________ is the loss of water vapor from the
leaves.
Stomata, guard cells - correct answer The opening and closing of _________ allow for
gas exchange, and transpiration is controlled by the __________ _________.
Xylem, Phloem - correct answer Water and dissolved essential minerals are
transported within the tree in the ________. The __________ conducts carbohydrates.
Cambium - correct answer The _________ is a layer of meristematic cells located
between the phloem and xylem.
Branch collar, Branch bark ridge - correct answer The _________ _________ is
formed when trunk tissue grows around branch tissues. As the branch and trunk tissues
expand against each other in the branch union, the ________ ____ ________ is
formed.
Bark - correct answer ______ protects the branches and trunk of a tree from
mechanical injury and desiccation.
Aborption, Conduction, Anchorage, Storage, Hormone production - correct answer
Name four functions of the root system
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