The Monoplacophora

Question

The Monoplacophora
A)lack a shell.
B)live in fresh water.
C)lack a foot.
D)have several internal organs that are serially repeated.
E)All of the choices are correct

Accepted Answer

The Monoplacophora have several internal organs that are serially repeated, which is a unique characteristic of this group. They do have a shell and a foot, and they are exclusively marine, so choices A, B, and C are incorrect. Therefore, the correct answer is D.