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Which of the following is not a characteristic of alveoli?

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in Biology – Class 11 by (272k points)
Which of the following is not a characteristic of alveoli?

(a) Thick

(b) Thin

(c) Irregular walled

(d) Vascularized

I got this question in an internship interview.

My doubt stems from Human Respiratory System in chapter Breathing and Exchange of Gases of Biology – Class 11

1 Answer

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Correct option is (a) Thick

Explanation: Alveoli is a thin, irregular walled and vascularized bag-like structure. It is the main site for diffusion of gases. Terminal bronchioles give rise to alveoli. Lungs without alveoli is a dead lung as they play a major role in respiration.

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