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Life Processes

Question 13:

Compare the functioning of alveoli in the lungs and nephrons in the kidneys with respect to their structure and functioning.

Answer:

Alveoli

Nephron

Structure

(i) Alveoli are tiny balloon-like structures present inside the lungs.

(ii) The walls of the alveoli are one cell thick and it contains an extensive network of blood capillaries.

Function

(i) The exchange of O2 and CO2 takes place between the blood of the capillaries that surround the alveoli and the …

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