Question

Which of the following is not the basis for the further classification of eumetazoa?

• A. Presence or absence of notochord
• B. The symmetry of the body of an organism
• C. Number of germ layers present in the embryo
• D. Mode of origin of mouth

Answer 1

The correct option is A

Presence or absence of notochord

Categorization of animals on the basis of presence and absence of notochord is done at the higher level. So, it is not the basis for further classification of eumetazoa.