Question

Are all bilaterians coelomates?

Answer 1

Bilateral animals:

1. In bilateral animals, the body can be divided into two identical halves in one plane. Examples include annelids, arthropods, and molluscs.
2. Coelomates possess a coelom (body cavity) that is lined by mesoderm.
3. All bilaterians are not coelomates. For example, flatworm.
4. Flatworms exhibit bilateral symmetry but they don’t have a coelom.