Solution:
Trophoblast and somatopleuric layer of extraembryonic mesoderm together form the chorion.
Amnion consists of amniogenic cells and somatopleuric extraembryonic mesoderm.
Yolk sac consists of extraembryonic endoderm and splanchnic mesoderm.
Trophoblast and somatopleuric layer of extraembryonic mesoderm together form
Trophoblast and somatopleuric layer of extraembryonic mesoderm together form the chorion.
Amnion consists of amniogenic cells and somatopleuric extraembryonic mesoderm.
Yolk sac consists of extraembryonic endoderm and splanchnic mesoderm.