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NEETZoologyBreathing and Exchange of Gases

Match the structures in List-I with their corresponding features or functions in List-II. List-I List-II (A) Conducting part (I) Actual site of diffusion of O ₂ and CO ₂ between blood and atmospheric air (B) Exchange part (II) Divides at the level of 5th thoracic vertebra (C) Epiglottis (III) Brings inhaled air to body temperature (D) Trachea (IV) Prevents the entry of food into the larynx Choose the correct answer f

Options

  1. A(A)-(I), (B)-(III), (C)-(II), (D)-(IV)
  2. B(A)-(III), (B)-(I), (C)-(II), (D)-(IV)
  3. C(A)-(I), (B)-(III), (C)-(IV), (D)-(II)
  4. D(A)-(III), (B)-(I), (C)-(IV), (D)-(II)

Correct answer

D. (A)-(III), (B)-(I), (C)-(IV), (D)-(II)

Step-by-step solution

The conducting part of the respiratory system (external nostrils to terminal bronchioles) transports atmospheric air, clears it from foreign particles, humidifies it, and brings it to body temperature. Hence, (A) matches with (III). The exchange part (alveoli and their ducts) is the actual site of diffusion of O ₂ and CO ₂ between blood and atmospheric air. Hence, (B) matches with (I). The epiglottis is a cartilaginous flap that prevents the entry of food into the larynx during swallowing. Hence, (C) matches with (

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