Biology 9700 · AS & A Level · The gas exchange system

The gas exchange system — practice question

What may be seen in some of the tissues in a transverse section of a trachea?

  • Aepithelium ciliated; goblet cells present; cartilage in blocks
  • Bepithelium ciliated; goblet cells present; cartilage in C-shaped rings
  • Cepithelium non-ciliated; goblet cells absent; cartilage in blocks
  • Depithelium non-ciliated; goblet cells absent; cartilage in C-shaped rings

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