Is 5 weeks embryo has a placenta?

At 5 weeks of gestation, the embryo is still in the early stages of development, and while the placenta is not fully formed, the initial structures that will develop into the placenta are starting to form. The placenta begins to develop from the trophoblast layer of the embryo and will continue to grow and mature throughout the first trimester. By this time, the placenta is providing some early nutritional support and facilitating gas exchange, although it is not yet fully functional.