Tonsil is formed from: (A) Ist Pharyngeal pouch, (B) IInd Pharyngeal pouch, (C) IIIrd Pharyngeal pouch, (D) IV Pharyngeal pouch
Answer is B. Second Pouch(a) The epithelium of the ventral pa of this pouch contributes to the formation of the tonsil.(b) The dorsal pa takes pa in the formation of the tubotympanic recess.Reference: Inderbir Singh Embryology; 10th edition; Page no: 135