True. Annelids are true coelomates, as they have a muscular system lining their body cavity.
The corneal process of the frontal bone is removed, because a horn is actually just developed around it. This exposes the frontal sinus. That's why it's good to dehorn them while they're young because when older, the bone and the horn join together.
It's the endocrine system. The endocrine system deals with hormones and glands, such as the pituary gland. Hope this helps!
I didn’t get to see this answer but it was very easy for me
