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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Which growth pattern is characterized by rounded or broader tree growth?

  1. Excurrent Growth

  2. Incurrent Growth

  3. Decurrent Growth

  4. Concurrent Growth

The correct answer is: Decurrent Growth

Decurrent growth is characterized by a wider tree growth at the base and gradually tapering towards the top, resembling a cone shape. Excurrent growth is the opposite, where the tree grows with a main central leader and branches growing outward. Incurrent growth is when the tree has multiple trunks that grow inward instead of upright. Concurrent growth is when multiple trunks grow simultaneously, resulting in a more balanced and upright appearance. Therefore, options A, B, and D are incorrect as they do not describe the rounded or broader tree growth seen in decurrent growth.

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