True organs and organ systems appear for the first time in this phylum, whose members have well-developed digestive, excretory, and reproductive systems. ... in directed, controlled ways (specialized nervous systems). They have ... Deuterostome means aquot;false mouth, aquot; and animals in this group 324 ANSWER SECTION.
|Title||:||Study guide to accompany The nature of life|
|Author||:||Deborah M. Brosnan, Donald J. Reinhardt, John H. Postlethwait, Janet L. Hopson|