Question

Biradial symmetry and lack of cnidoblasts are the characteristics of (1)Hydra and Aurelia (2)Aurelia and sea Adamsia (3)Ctenoplana and Pleurobrachia (4)Aurelia and Paramoecium

Answer 1

Answer:

Phylum CTENOPHORA

3

thanks

Explanation:

Answer 2

Answer:

(3) ctenoplana and pleurobrachia

Explanation:

as both colenterata and and ctenophora group of organisms has bilateral symmetry but..cnidoblasts are present in colenterata, but they are absent in ctenophora . So as ctenoplana and pleurobrachia belong or ctenophora they are the answer.