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NEET UG BIOLOGY MCQ: BREATHING AND EXCHANGE OF GASES
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The oesophagus and trachea open into (A) . A cartilaginous flap called (B) prevents the entry of food into the glottis. (A) & (B) are.
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Correct option: B
Pharynx, epiglottis
Option B (Pharynx, epiglottis) is correct because the oesophagus and trachea open into the pharynx, and the epiglottis prevents food from entering the trachea during swallowing.
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suffocation.
Reason : Atmospheric air contains far less
oxygen content than the dissolved oxygen in
water. The faster breathing in high fever is due to the