Answer
D
Work Step by Step
The interior tube of an animal with tube-within-a-tube body plan is the endotherm. The digestive tube is the inner tube and the endotherm is the innermost layer that forms the lining of the digestive tract.
Biological Science (6th Edition)
by Freeman, Scott; Quillin, Kim; Allison, Lizabeth; Black, Michael; Taylor, Emily; Podgorski, Greg; Carmichael Jeff
Published by
Benjamin Cummings
ISBN 10:
0321976495
ISBN 13:
978-0-32197-649-9
Chapter 30 - An Introduction to Animals - Review - Page 632: 2
Update this answer!
You can help us out by revising, improving and updating this answer.
Update this answerAfter 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.
