ISA Certified Arborist Practice Exam

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Study for the ISA Certified Arborist Exam. Prepare with flashcards, multiple choice questions, and comprehensive hints and explanations. Get ready to ace your exam!

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What does "pruning wound closure" refer to?

The process of cleaning cut branches
The healing process after a branch is removed
The immediate reaction to heavy pruning
The preparation before pruning

The correct answer is: The healing process after a branch is removed

"Pruning wound closure" refers specifically to the healing process that occurs after a branch is removed from a tree. When a tree undergoes pruning, particularly the removal of larger branches, it initiates a natural response to heal the exposed wound. This healing process is critical as it helps prevent the entry of pathogens, reduces the risk of decay, and supports the overall health of the tree. Essentially, after a pruning cut is made, the tree begins to compartmentalize the wound, employing specialized cells to form callus tissue that will eventually cover the area and restore the protective bark layer. This process is vital for the longevity and vitality of the tree, as inadequate wound closure can lead to lasting damage or infection. Overall, understanding how trees respond to pruning and the importance of this healing process is key for effective tree care and maintenance.