Certified Arborist Practice Exam

When considering the strength of branch attachment, the relative size of a branch in relation to the trunk is indeed more crucial than the angle of attachment. A larger branch will have more surface area for attachment and a stronger union with the trunk, making it less prone to failure. This is especially important in preventing included bark and potential tearing as the branch grows in diameter. While the angle of attachment can influence weight distribution and leverage, a secure and robust union based on relative size will generally provide better structural support for the branch.