ISA Certified Arborist Practice Exam

Question: 1 / 400

What does transpiration refer to in trees?

Root growth

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.

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Seasonal fruit development

Energy production

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