Biology 2010 Student Edition

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

Chapter 27, Animal Systems I - Assessment - 27.3 - Understand Key Concepts - Page 802: 18

Answer

b.

Work Step by Step

Option a. is incorrect. Blood comes in direct contact with tissues in an open circulatory system. Option c. is incorrect. Blood empties into sinuses in an open circulatory system. Option d. is incorrect. The function of blood, whether in open or closed circulatory systems, is to carry oxygen. Option b. is correct. In closed circulatory systems, blood is pumped through a series of closed blood vessels by a heart.
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