Campbell Biology (11th Edition)

Published by Pearson
ISBN 10: 0-13409-341-0
ISBN 13: 978-0-13409-341-3

Chapter 34 - 34.5 - Concept Check - Page 738: 3


Birds are adapted to fly based on their having: 1) The weight-saving lack of the bladder which normally holds urine and the female’s second ovary; 3) Honeycombed, air-filled bones; 3) Feathers to help trap air when wings beat; and 4) Wings designed to beat against the air and produce lift.

Work Step by Step

This is just a summary of pp.732-733. Group most of the weight-saving features together as one of the four points in the list.
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