The major difference between protostomes and deuterostomes is:

Question

Quizplus · Accepted Answer

The major difference between protostomes and deuterostomes is the way the body cavity forms. In protostomes, the mouth develops before the anus and the body cavity forms by splitting the mesoderm. In deuterostomes, the anus develops before the mouth and the body cavity forms from outpocketings of the archenteron. The presence or absence of a coelom (A), body symmetry (D), and tissues (E) can vary in both protostomes and deuterostomes, and cephalization (C) is not a defining feature of either group.

The Major Difference Between Protostomes and Deuterostomes Is