Which of the following extra-embryonic membranes becomes the embryonic portion of the structure involved in waste and nutrient exchange between the embryo and the mother?
Select one:
a. Chorion
b. Yolk Sac
c. Allantois
d. Amnion
6 years ago
Answered By Yamini G
Chorion- forms chorionic villi which interdigitates with uterine wall to form Placenta (structure for exchange)
amnion- forms amniotic sac, protective covering around the embryo
yolk sac- contains yolk, more dev in egg laying animals
6 years ago
Answered By Yamini G
Chorion- forms chorionic villi which interdigitates with uterine wall to form Placenta (structure for exchange)
amnion- forms amniotic sac, protective covering around the embryo
yolk sac- contains yolk, more dev in egg laying animals
allantois- embryo’s kidney, stores metabolic waste