What was a major morphological criterion on which traditional classification of animals was based?
A)presence or absence of a true body cavity
B)presence or absence of specialized cells
C)presence or absence of genetic material
D)presence or absence of cell wall
E)basic pattern of cell division

Question

Quizplus · Accepted Answer

Presence or absence of a true body cavity, also known as coelom, was a major morphological criterion on which traditional classification of animals was based. The presence or absence of coelom helped to distinguish major groups of animals such as protostomes and deuterostomes.

What Was a Major Morphological Criterion on Which Traditional Classification