Question

Are Porifera & Cnidaria acoelomates?

Answer 1

Coelomates:

1. The coelom is a cavity present between the digestive tract & the outer body wall.
2. Organisms with a fluid-filled cavity in their bodies or coelom are called coelomates.
3. Example- Annelids, Molluscs, Arthropods, etc.

Acoelomates:

1. Organisms without a fluid-filled cavity (coelom) in their bodies.
2. Example- invertebrates like Planarians, tapeworms, & flukes.
3. Porifera & Cnidaria are acoelomates.
4. Examples of Porifera- Glass Sponges, Demospongiae, etc.
5. Examples of Cnidaria-Corals, hydra, jellyfish, etc