are the extraembryonic membranes the same in all


Are the extraembryonic membranes the same in all vertebrates?

The presence of each extraembryonic membrane varies according to the vertebrate class.

In fishes and amphibians only the yolk sac is present. In reptiles and birds besides the yolk sac there are also the amnion, the chorion and the allantois. In placental mammals besides all these membranes the placenta is present too.

 

Request for Solution File

Ask an Expert for Answer!!
Biology: are the extraembryonic membranes the same in all
Reference No:- TGS0324958

Expected delivery within 24 Hours