Biology 2010 Student Edition

Published by Prentice Hall
ISBN 10: 9780133669510
ISBN 13: 978-0-13366-951-0

Chapter 27, Animal Systems I - Assessment - 27.2 Respiration - Understand Key Concepts/Think Critically - Page 802: 10



Work Step by Step

The reason that the respiratory surfaces have to be kept moist is because they don't function properly if they are dry. This was an obstacle for organisms to transition to living on land because they had to find a way to keep their respiratory surfaces moist in a dry environment whereas those organisms living in water do not have this problem because they are in a wet environment already and their respiratory surfaces are bathed in water.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.