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In which respiratory part does the diffusion of gas take place?

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in Biology – Class 11 by (272k points)
In which respiratory part does the diffusion of gas take place?

(a) Alveoli

(b) Bronchi

(c) Bronchioles

(d) Trachea

This question was addressed to me in class test.

Query is from Human Respiratory System topic in chapter Breathing and Exchange of Gases of Biology – Class 11

1 Answer

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Right option is (a) Alveoli

To explain: Alveoli is the part where the diffusion of gases takes place. It exchanges oxygen and carbon dioxide between the bloodstream. They are arranged as small balloon clusters throughout the lungs.

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