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Question

Biradial symmetry and lack of cnidoblasts are characteristic of

A
Hydra and starfish
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B
Starfish and sea anemone
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C
Ctenophora and Beroe
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D
Aurelia and Paramecium
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Solution

The correct option is C Ctenophora and Beroe
Beroe is also known as the mellon jellyfish and is the most common type of species of phylum Ctenophora. Ctenophora is known to have biradial symmetry. Each of the four parts is identical to the opposite side but different from the adjacent side. Cnidoblasts and nematocysts are absent in Ctenophora and are found in cnidarians.
Thus, the correct answer is option C.

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