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What type of symmetry do sponges have? A: Some sponges have radial symmetry, but many species are irregular in shape and have no symmetry at all. Two simpler groups of sponges, known as asconoid an... Full Answer >
The structure of a sponge is simple. One end is attached to a solid such as a rock while the other end, called the osculum, is open to the environment. Sponges are able to get microorganisms such as algae and bacteria for food through openings.he first are the collar cells, which line the canals in the interior of the sponge. Flagella are attached to the ends of the cells and they help pump water through the spongeâs body. By pumping water, they help bring oxygen and nutrients to the sponge while also removing waste and carbon dioxide.