Gynaecology & Obstetrics Placenta develops from: A Chorion frondosum and decidua basalis B Chorion villi and decidua basalis C Chorion frondosum and decidua capsularis D Chorion villi and decidua parietalis 💡 Explanation Placenta develops from: ✓ Correct Answer: A. Chorion frondosum and decidua basalis