Question

The lining of the respiratory tract is derived from which germ layer?

विकल्प

• Both ectoderm and mesoderm

• Mesoderm

• Ectoderm

• Endoderm

Answer 1

The respiratory tract lining, like the epithelial lining of the digestive tract, is derived from the endoderm — the innermost germ layer that forms the inner lining of the embryo.