You are given the task of confirming the categorization of a newly discovered animal that has been tagged as a species of annelid.What evidence would convince you that it is indeed an annelid and not a roundworm or flatworm?
A)an incomplete digestive tract
B)a highly branched gastrovascular cavity
C)parasitic feeding habits
D)body segmentation

Question

Quizplus · Accepted Answer

Body segmentation is a defining characteristic of annelids, meaning that they have repeated body segments with corresponding sets of organs and appendages. This feature is not present in flatworms or roundworms. Therefore, observing body segmentation in the newly discovered animal would strongly suggest that it is an annelid. The other choices (incomplete digestive tract, highly branched gastrovascular cavity, and parasitic feeding habits) are not exclusive to annelids and can be found in other animal groups as well.

You Are Given the Task of Confirming the Categorization of a Newly