A. Tracheoles
B. Alveolar sacs
C. Bronchioles
D. Alveoli
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Answer: B. Alveolar sacs Alveolar sacs is the last part of the bronchus in lung and takes part in exchange of gases.
Answer: B. Alveolar sacs
Alveolar sacs is the last part of the bronchus in lung and takes part in exchange of gases.
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