Identify an example of diploblastic animals. 

The correct answer is Coelenterates.

Key Points

•  Coelenterates.
  • ​The name "Coelenterata" refers to the animal phylum Cnidaria.
  • They have radial symmetry and a very basic tissue structure with just two cell layers (ectoderm and endoderm). Examples include hydrae, jellyfish, and sea anemones, which are solitary, as well as corals, which are frequently colonial.
  • Coelenterata rely on diffusion across the tissue layers rather than a specific circulatory system.

Additional Information

•  Coelenterates are all aquatic, primarily marine, creatures. The body morphology is diploblastic, radially symmetric, and lacks a coelom.
• The hypostome, the body's only aperture, is encircled by sensory tentacles that are either nematocyst- or colloblast-equipped to acquire primarily planktonic prey.
• The gastrovascular cavity, also known as the coelenteron, is a large cavity that encircles these tentacles. Digestion occurs both within and outside of cells. Simple diffusion is used to perform breathing and excretion. The body is covered in a network of nerves.