Question

Why the body of a hydra is called radially symmetrical?

Answer 1

Members of Phylum Cnidaria show radial symmetry, such as a Hydra. Many cnidarians like sea anemones are biradially symmetrical, i.e. their body could be divided in equal parts by cutting through only two radial planes.

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Answer 2

In radial symmetry, the body parts are arranged around the central axis, if we cut through the central axis in any direction, it can be divided into similar halves. other examples are star fish and jelly fish.