Wednesday
December 17, 2014

Homework Help: Biology

Posted by mysterychicken on Monday, March 15, 2010 at 5:08pm.

20. Three common characteristics of adult vertebrates are
a. skull, notochord, and complex organ system
b. backbone, segmentation, and open circulatory system
c. two pairs of jointed appendages, cephalization, and internal skeleton
d. hydrostatic skeleton, bilateral symmetry, and true coelom
A?

-MC

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