This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Urogenital System, Subject name: Anatomy
Trigone of urinary bladder develops from: 
Select and explain. 
A. Endoderm, B. Ectoderm, C. Mesoderm, D. None
C: Mesoderm
Answer: C: Mesoderm 
Explanation: Ans. (c) MesodermRef. BDC Vol-2/ 382* Trigone of bladder is formed by the absorption of mesonephric ducts and is mesodermal in origin.