Biradial symmetry and lack of cnidoblasts are characteristics of
Hydra and Starfish
Starfish and Sea Anemone
Ctenoplana/Ctenophora and Beroe
Aurelia and Paramecium
The correct option is C Ctenoplana/Ctenophora and Beroe
Biradial symmetry is a combination of radial and bilateral symmetry, as in the ctenophores. Here, the body components are arranged with similar parts on either side of a central axis, and each of the four sides of the body is identical to the opposite side but different from the adjacent side. Also, Cnidblasts being exclusive Cnidarian character does not exist in Ctenophora.