Placenta : In flowering plants , the part of the ovary wall to which the ovules or seeds are attached. : A temporary structure in the uterine wall that permits diffusion between the fetal and maternal circulatory system.
Placenta : In flowering plants , the part of the ovary wall to which the ovules or seeds are attached. : A temporary structure in the uterine wall that permits diffusion between the fetal and maternal circulatory system.