NEET 2006 Biology question

Biradial symmetry and lack of cnidoblasts are the characteristics of-

(1)Starfish and sea anemone
(2)Ctenoplana and BeroeCorrect
(3)Aurelia and Paramecium
(4)Hydra and starfish

Answer: (2)

Solution

Ctenophores (sea walnuts or comb jellies, such as Ctenoplana and Beroe) show biradial symmetry and, unlike cnidarians, lack cnidoblasts (stinging cells); instead they have colloblasts (lasso cells) and 8 rows of

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Question ID VK-089722