Do cnidarians have a Coelom?
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Also asked, do Cnidaria have a body cavity?
A cnidarian's body is diploblastic, with two cell layers of the body wall separated by mesoglea, and shows radial symmetry. The body cavity (gastrovascular cavity) is sac-shaped, with one opening acting as both mouth and anus. This opening is surrounded by tentacles bearing thread cells.
Secondly, do cnidarians have a mesoderm? Cnidarians are generally regarded as diploblastic animals, possessing endoderm and ectoderm, but lacking mesoderm.
Also to know, do Coelenterates have Coelom?
The members of the phylum Coelenterata include the cnidarians such as sea anemones, jellyfish, obelia etc. They are diploblastic animals therefore, they do not have a coelom (fluid-filled body cavity lined by mesodermic tissues). Instead, they have a gastrovascular cavity which is not a true body cavity.
What does it mean if an organism has a Coelom?
A coelom is a hollow, fluid-filled cavity found in many living things, where it acts as a protective cushion for their internal organs. In some animals, such as worms, the coelom acts as a skeleton. The coelom also allows the internal organs to move and grow independently of the outer layer of the body wall.