Zoology - Human Reproduction Question with Solution | TestHub

The blastocyst is a hollow structure that contains a cluster of cells from which embryo arises. The outer layer provides placenta and other essential tissues for fetal development while the inner cells give rise to the tissues of the body. This outer layer is known as trophoblast which provides nutrients to the embryo. Embryoblast is cells which are situated within the trophoblast and result in the production of an embryo.