Certified Arborist Practice Exam

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Prepare for the Certified Arborist Exam with our comprehensive online quiz. Study using flashcards, multiple-choice questions, and detailed explanations to ace your certification test!

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What inhibits the inward spread of decay on the wall?

Alkaline
Buckeye, Horsechestnut
Iron and Manganese
Soil

The correct answer is: Buckeye, Horsechestnut

Buckeye and Horsechestnut inhibits the inward spread of decay on the wall due to their high tannin content. Tannins have antifungal and antibacterial properties that can help to slow down or prevent the spread of decay within the tree. This natural defense mechanism can contribute to the tree's overall health and structural integrity. Options A, C, and D are not directly related to inhibiting the inward spread of decay on the wall compared to the tannin content found in Buckeye and Horsechestnut.