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Question
Which animal has unpaired lungs
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Solution
The correct option is D Some snakes
(d) Some snakes have only one bronchus and the right lung. in mammalian lungs each alveolar duct ends in a passage, called atrium, which leads into a number of rounded alveolar sacs. Each alveolar sac is studded with a large number of air sacs or alveoli. Alveoli are the sites of respiration.
(d) Some snakes have only one bronchus and the right lung. in mammalian lungs each alveolar duct ends in a passage, called atrium, which leads into a number of rounded alveolar sacs. Each alveolar sac is studded with a large number of air sacs or alveoli. Alveoli are the sites of respiration.
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