ISA Chapter 8 Workbook Questions &
Answers (Graded A)
Because pruning removes leaves and reduces the overall photosynthetic capacity of a
tree, it also reduces - ANSWER-Growth
Name 5 common reasons for removing limbs from trees - ANSWER-Dead, diseased,
hazardous, crossing, thinning for light or air penetration, weight reduction, size
reduction.
To maximize flowering, plants that bloom on currents seasons wood should be pruned
prior to blank, or in the summer after bloom has occurred. Plants that bloom on last
seasons wood should be pruned just after blank. - ANSWER-Leaf emergence, bloom.
True or false: trees that tend to "bleed" should never be pruned in the early spring
because doing so is likely to cause a major decline in vigor. - ANSWER-False
Label the branch bark ridge and the branch collar in this drawing. Show where undercut,
top cut, and final cut should be made in removing the limb. - ANSWER-
Blank is bark that gets pushed inside the branch union as two branches grow and
develop. - ANSWER-Included bark
The swollen area at the base of a branch where it arises from the trunk is called the
blank. - ANSWER-Branch collar
Two limbs that arise from apical buds on the same stem are known as blank and are
both direct extensions from the stem below. - ANSWER-Co-dominant Stems/Branches.
True or false: in the absence of included bark, the relative size of a branch in relation to
the trunk is more important for strength of branch attachment than is the angle of the
attachment. - ANSWER-True
True or false: Codominant stems can represent a structurally unstable branch
configuration, especially if there is included bark in the junction. - ANSWER-True
When training young trees, a single central leader should be selected and competing
leaders should be removed or - ANSWER-Subordinated
True or false: as a general rule, mature trees are less tolerant of severe pruning than
juvenile trees. - ANSWER-True
Answers (Graded A)
Because pruning removes leaves and reduces the overall photosynthetic capacity of a
tree, it also reduces - ANSWER-Growth
Name 5 common reasons for removing limbs from trees - ANSWER-Dead, diseased,
hazardous, crossing, thinning for light or air penetration, weight reduction, size
reduction.
To maximize flowering, plants that bloom on currents seasons wood should be pruned
prior to blank, or in the summer after bloom has occurred. Plants that bloom on last
seasons wood should be pruned just after blank. - ANSWER-Leaf emergence, bloom.
True or false: trees that tend to "bleed" should never be pruned in the early spring
because doing so is likely to cause a major decline in vigor. - ANSWER-False
Label the branch bark ridge and the branch collar in this drawing. Show where undercut,
top cut, and final cut should be made in removing the limb. - ANSWER-
Blank is bark that gets pushed inside the branch union as two branches grow and
develop. - ANSWER-Included bark
The swollen area at the base of a branch where it arises from the trunk is called the
blank. - ANSWER-Branch collar
Two limbs that arise from apical buds on the same stem are known as blank and are
both direct extensions from the stem below. - ANSWER-Co-dominant Stems/Branches.
True or false: in the absence of included bark, the relative size of a branch in relation to
the trunk is more important for strength of branch attachment than is the angle of the
attachment. - ANSWER-True
True or false: Codominant stems can represent a structurally unstable branch
configuration, especially if there is included bark in the junction. - ANSWER-True
When training young trees, a single central leader should be selected and competing
leaders should be removed or - ANSWER-Subordinated
True or false: as a general rule, mature trees are less tolerant of severe pruning than
juvenile trees. - ANSWER-True
