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Question
Which one is a true fish?
Options
Jellyfish
Starfish
Dogfish
Silverfish
Solution
Dogfish
Explanation -
Jellyfish (Aurelia), starfish (Asterias), and silverfish (Lepisma) belong to the phyla Coelenterata, Echinodermata, and Arthropoda respectively, and are all invertebrates. Dogfish (Scoliodon) is a true fish that belongs to Class Pisces of Vertebrata.
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