Which term denotes the front end of an annelid?

Which term denotes the front end of an annelid?

• A. Prostomium flap
• B. Anterior
• C. Clitellum
• D. Posterior

Answer: (B)

The front end of an annelid is described by the term anterior, which in bilateral animals refers to the head region. Annelids have a prostomium at the very front that forms part of the head over the mouth, but that’s a specific structure rather than the directional label for the front. The clitellum is a swollen region involved in reproduction located mid-body, not the front, and posterior refers to the rear end. So anterior best denotes the front end.

The front end of an annelid is described by the term anterior, which in bilateral animals refers to the head region. Annelids have a prostomium at the very front that forms part of the head over the mouth, but that’s a specific structure rather than the directional label for the front. The clitellum is a swollen region involved in reproduction located mid-body, not the front, and posterior refers to the rear end. So anterior best denotes the front end.