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Breathing and Exchange of Gases — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYBreathing and Exchange of Gases1 Mark
MCQ
Trachea divides into bronchi at:
  • A
    4th thoracic vertebra.
  • B
    5th thoracic vertebra.
  • C
    6th thoracic vertebra.
  • D
    7th thoracic vertebra.
✓

Answer

  1. 5th thoracic vertebra.

Explanation:

Trachea is a straight tube extending up to the mid-thoracic cavity. It divides into bronchi at 5th thoracic vertebra.

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