MHT-CET

Breathing and Exchange of question bank (Biology)

Practice 38 free MHT-CET Biology - Breathing and Exchange of questions with answers and step-by-step solutions.

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Q1.

In the lungs, the alveolar air is separated from blood by ______.

(A)
a layer of squamous epithelium and smooth muscles.
(B)
a layer of squamous epithelium and a layer of transitional epithelium
(C)
two layers of simple squamous epithelium
(D)
two layers of tunica externa, interna and tunica media
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Q2.

Which one of the following prevents the collapsing of the trachea even when there is no air?

(A)
Pseudostratified epithelium.
(B)
Cartilagenous rings.
(C)
Diaphragm.
(D)
Thoracic ribs.
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