In females, the uterus is a single organ, meaning it is not divided or duplicated. This option is correct. The uterus, also known as the womb, is an essential reproductive organ located in the pelvis. It is a hollow, muscular structure where a fertilized egg implants and develops into a fetus during pregnancy. The uterus is composed of an upper part called the fundus, a middle part called the body, and a lower part called the cervix. It is responsible for menstruation, implantation, and childbirth. Unlike some organs in the body, the uterus does not have a duplicate or multiple structures. It is a single, pear-shaped organ that is unique to females.