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Class 11BiologyBreathing and Exchange of GasesHuman Respiratory System
Easy

In mammals,the tracheal cartilaginous rings are

  • A
    Complete rings
  • B
    Incomplete rings
  • C
    Incomplete dorsally
  • D
    Incomplete laterally
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Class 11 Questions

Class 11

Biology Questions

Chapter

Breathing and Exchange of Gases

Subtopic

Human Respiratory System

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