ISA Certified Arborist Practice Exam 2025 - Free ISA Arborist Practice Questions and Study Guide

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What is the process of "bark peeling" in trees?

The growth of new bark over old bark layers.

The shedding of outer bark layers due to growth or stress.

The process of "bark peeling" in trees refers to the shedding of outer bark layers due to growth or stress. This is a natural part of a tree's growth cycle, where the outer bark can become loose and detach from the trunk. As trees grow, the cambium layer, which is responsible for producing new bark and wood, expands and can cause the outer older bark layers to separate and fall off.

In stressful conditions, such as changes in temperature, humidity, or physical damage, bark peeling can be exacerbated. This can also occur as part of the tree's response to diseases or pests, leading to a change in the bark’s health and structure.

Understanding this process is important for arborists and tree care professionals because it can indicate how a tree is coping with its environment or if it is facing any detrimental factors. Being able to distinguish the normal shedding of bark from other issues, such as disease or damage, is vital for proper tree management and care.

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The dying back of bark from the trunk.

The natural repair of damaged bark.

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