In museum study, an instructor compares annelid segmentation with arthropod body regions. The specimen or feature is best linked with:

Annelids show repeated segments, but their segments are generally less fused into specialized tagmata than in arthropods. Arthropods often form distinct regions such as head, thorax, abdomen, or cephalothorax. This MCQ belongs to the Annelida topic in Animal Diversity-I and is written to test concept understanding rather than memorized wording.