Phylum Porifera sponges have radial symmetry.
Individuals in the phylum porifera are asymmetrical.
Actually all Cnidarians have radial symmetry (able to be divided into identical pie-shaped segments) and have stinging cells. The invertebrate with no symmetry is probably a sponge, phylum Porifera.
Sponges belong to the phylum Porifera and exhibit no body symmetry. Their bodies lack definite shape and are composed of specialized cells organized in a loose aggregation. Sponges are the simplest multicellular organisms and showcase a unique form of asymmetry in the animal kingdom.
most porifera do not have any symmetry
The phylum Porifera (sponges) is the only animal phylum that lacks true tissues and symmetry. Sponges are simple multicellular organisms with specialized cells, but they do not have tissues that are organized into distinct structures like other animals. Additionally, sponges exhibit asymmetry rather than bilateral or radial symmetry found in other phyla.
I assume you mean in animals? The best example is a sponge, in Phylum Porifera.
Porifera
phylum porifera are sponges.
Symmetry in animals of the phylum is typically categorized as radial or bilateral. Radial symmetry is when an organism can be divided into equal halves in multiple planes around a central axis, like a sea anemone. Bilateral symmetry is when an organism can be divided into two equal halves along just one plane, like a human.
phylum porifera
The Phylum Porifera consists of the sponges. To make it into the porifera phylum an animal must have no true tissue. Some contain spicules, a skeletal element, and all contain choanocysts, a type of cell, which move water through the porous bodies of poriferas. Porifera also have totipotent cells, which have the cabalitity of changing into whatever type of cell is needed by the organism.
The phylum Porifera contains two subphlya. They are the Symplasma and Cellularia.