ISA Certified Arborist Practice Exam

Disable ads (and more) with a membership for a one time $2.99 payment

Prepare for the ISA Certified Arborist Exam with detailed flashcards and multiple-choice questions, each offering hints and explanations. Ace your certification test!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

Which of the following represents excurrent tree growth?

Linear and continuous growth
Concentric rings
Branches on a single plane
Branches on multiple planes

The correct answer is: Linear and continuous growth

Excurrent tree growth is characterized by a single, dominant leader that extends the length of the trunk. This results in linear and continuous growth upwards, giving the tree a more conical or pyramidal shape. This growth pattern is common in species like pines and firs. In contrast, trees with decurrent growth have multiple leaders or branches that grow outward in various directions. Option A correctly represents excurrent tree growth with its description of linear and continuous growth. Options B, C, and D are more indicative of decurrent growth patterns.