In development, Eustachian tube is

Options :
  1. ectodermal
  2. endodermal
  3. mesodermal
  4. both mesodermal and endodermal
Answer and Explanation :-

Answer: Option 2

Explanation:

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The years stretched before her, a long and dusty way, yet if she could walk humbly along it she might find that life, unfolding slowly, keeps its best secrets till the end.
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