ISA Certified Arborist Practice Exam

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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!

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What does transpiration refer to in trees?

Root growth
Loss of water vapor from leaves
Seasonal fruit development
Energy production

The correct answer is: Loss of water vapor from leaves

Transpiration in trees refers to the process of water loss in the form of water vapor from the leaves. This is a crucial physiological process where water is absorbed by the roots, transported through the plant, and then released through small openings in the leaves called stomata. Transpiration helps plants to regulate temperature, transport nutrients, and maintain cell turgidity. Root growth (Choice A), seasonal fruit development (Choice C), and energy production (Choice D) do not accurately describe transpiration in trees.