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A: The passage starting with the externa...

A: The passage starting with the external nostrils
upto the terminal bronchiole constitute the
respiratory part.
R: The respiratory part transport the air to the
alveoli, clears it from the foreign material,
humidified and brings the air to body
temperature.

A

If both Assertion & Reason are true and the
reason is the correct explanation of the
assertion, then mark (1)

B

If both Assertion & Reason are trye but the
reason is not the correct explanation of the
assertion , then mark (2)

C

If Assertion is true statement but Reason is
fakse, then mark (3)

D

If both Assertion and Reason are false
statements, then mark (4)

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we need to analyze the assertion (A) and the reason (R) provided in the statement. ### Step-by-Step Solution: 1. **Understanding the Assertion (A)**: - The assertion states: "The passage starting with the external nostrils up to the terminal bronchiole constitutes the respiratory part." - The respiratory system is divided into two main parts: the conducting part and the respiratory part. - The conducting part includes structures from the external nostrils (nose) to the terminal bronchioles. Therefore, the assertion is incorrect because it refers to the conducting part, not the respiratory part. 2. **Understanding the Reason (R)**: - The reason states: "The respiratory part transports the air to the alveoli, clears it from foreign material, humidifies it, and brings the air to body temperature." - The respiratory part is primarily responsible for the exchange of gases (oxygen and carbon dioxide) and includes structures such as the alveoli. - The functions described in the reason (transporting air, clearing it from foreign material, humidifying it, and regulating temperature) are actually functions of the conducting part, not the respiratory part. Therefore, the reason is also incorrect. 3. **Conclusion**: - Since both the assertion and the reason are incorrect, the correct answer is that both are false. ### Final Answer: Both assertion and reason are false.
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