A starfish
radially symmetric
porifera & echinodermata
the sea wasp also called the box jelly fish- symmetry is radial
All cnidarians possess tentacles and are radially symmetrical. Most cnidarians are found in shallow water and are marine life.
All life on land evolved from a few aquatic ancestors. It just so happens that all of these ancestors were not radially symmetrical, so all land animals are not radially symmetrical.
A Starfish
It is true.
True
radially symmetric
Most annelids are essentially tubes so they are radially symmetric.
S. C. R. Dennis has written: 'On the solution of the Navier-Stokes equations for a type of steady radially-symmetric viscous flow'
Brain corals are hemispherical or spherical in shape resembling a brain. They must me radially symmetrical organism.
Cnidaria (Hydra, jellyfish, sea anemones, corals, etc.), generally have radial symmetry, although not all sea anemones or corals do. Echinodermata (sea stars, sea urchins, crinoids, sea cucumbers, etc.) are radially symmetrical as adults, but not as larvae.
A starfish.
no
Tangential.
Some well known gastropods, which are mollusks, are snails and slugs, and they exhibit what is known as BILATERAL SYMMETRY. The only other kind of symmetry that exists in the animal kingdom, with the exception of colonial species such as the sponge, is RADIAL SYMMETRY. This second type is exhibited by starfish, for example. Cephalopods, another type of mollusk, may appear to be radially symmetric, but are actually bilaterally symmetric due to the composition of their cephalic (head) region.