Which of the following was NOT a major morphological criterion on which traditional classification of animals was based?

Question

Quizplus · Accepted Answer

Traditional classification of animals primarily relied on morphological and developmental characteristics such as the presence or absence of a true body cavity (coelom), type of body symmetry (e.g., radial or bilateral), pattern of embryonic development (e.g., protostome vs. deuterostome), and the presence or absence of certain types of tissues (e.g., epithelial, connective, muscle, and nervous tissues). The basic pattern of cell division was not a major criterion used in traditional animal classification.

Which of the Following Was NOT a Major Morphological Criterion