Campbell Biology (11th Edition)

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

Chapter 40 - Test Your Understanding - Level 3 - Synthesis/Evaluation - Page 895: 10

Answer

The caterpillars are keeping themselves at optimal temperatures as the weather changes from morning to afternoon.

Work Step by Step

You could test this by artificially changing the temperature in a controlled environment of caterpillars. In theory, the caterpillars would huddle on the east side (the direction of the sun and it’s warmth) when it’s cold and would hang loosely when it was warm.
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