<prompt> The weight of placenta at term is250 gm500 gm7500 gm1000 gm  <response>: 500 gm: Ref: 29-D, 23-H BPlacenta at term. The mature placenta is a Fleshy, discoid organ weighing about 500 gm usually weighing about 16 of the fetal weight. It is about 20 - 25 cm in diameter and 2.5 cm thickness at term, about four-fifths ofplacenta is of fetal origin. 