In the following questions, a statement of As | vedclass

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(A) Step $1$: The exchange of gases ($O_2$ and $CO_2$) occurs in the lungs at the interface of alveoli and pulmonary capillaries.Step $2$: Due to part

Vedclass · Accepted Answer

If both Assertion and Reason are true and Reason is the correct explanation of Assertion.

Vedclass · Answer

(A) Step $1$: The exchange of gases ($O_2$ and $CO_2$) occurs in the lungs at the interface of alveoli and pulmonary capillaries.Step $2$: Due to partial pressure differences, oxygen moves from the alveoli (high concentration) into the blood (low concentration), and carbon dioxide moves from the blood (high concentration) into the alveoli (low concentration).Step $3$: Since the Reason correctly explains the mechanism behind the exchange mentioned in the Assertion, both are true and the Reason is the correct explanation.Conclusion: Option $A$ is correct.

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