A) Starfish and sea anemone
B) Ctenoplana and Beroe
C) Aurelia and Paramecium
D) Hydra and starfish
Correct Answer: B
Solution :
[b] Ctenoplana and Beroe lack cnidoblasts and have biradial symmetry. These belong to phylum Ctenophora. |
Hydra Sea anemone, Amelia are coelentrates which have cnidoblasts. Although sea anemone has biradial symmetry. |
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