Consider tracheary elements with annular thickening (annular secondary walls) and those with pitted walls. Which is weaker? Which has a large percentage of its primary wall free of secondary wall and available for water movement? Is one always more selectively advantageous than the other? Explain.

Consider tracheary elements with annular thickening (annular secondary walls) and those with pitted walls. Which is weaker? Which has a large percentage of its primary wall free of secondary wall and available for water movement? Is one always more selectively advantageous than the other? Explain.

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter13: The Respiratory System

Section: Chapter Questions

Problem 1TAHL

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