Question

5. Accessory respiratory organ found in ___​

Answer 1

Answer:

Some fishes, which possess other organs that help them to take in atmospheric oxygen such as air bladder, buccal cavity, alimentary canal, skin, air chambers. They are called as the accessory respiratory organs which enable the fishes to aestivate (summer sleep), to live in water having biological oxygen debt and to survive outside the water for a while. Examples are Anabas, Amphipnous, Saccobranchus, Clarias, Lepidosiren and Ophiocephalus. Hence, option D is the correct answer.

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