<prompt> The auricle develops from:1st branchial cleft1st branchial arch1st, 2nd and 3rd branchial arch1st and 2nd branchial arch  <response>: Ans. d 1st and 2nd branchial archRef: P.L. Dhingra 6th ed. 11 The auricle develops from fusion of mesenchyme of 1st and 2nd branchial arch. External ear canal develops from the ectoderm of 1st branchial cleft. Tympanic membrane is derived from all the three germ layers contributed by 1st pharyngeal branchial arch. 