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Match the following columns and select t...

Match the following columns and select the correct option:

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• Cyclostomes have an elongated body bearing 6-15 pairs of gill slits for respiration.
• Heterocercal caudal fin is present in members of class Chondrichthyes.
• Air bladder is present in bony fishes belonging to class Osteichthyes which regulates buoyancy.
• Trygon (sting ray) – a cartilaginous fish, has possesses poison sting.
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