In osteichthyes, _________ are well developed and function as a lungs.

اوسٹکتھائس میں، _________ اچھی طرح سے تیار ہوتے ہیں اور پھیپھڑوں کے طور پر کام کرتے ہیں۔

Answer: Swim bladder

Explanation
  • In osteichthyes (bony fish), the swim bladder is well developed and functions as a lung for buoyancy control and gas exchange in some species.
  • This organ helps fish adjust their position in the water column and, in certain species, assists in respiration.
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