In mammals,the trophoblast layer in a blastocyst will become part of the
A) uterus.
B) primary oocyte.
C) oviduct.
D) placenta.

Question

Quizplus · Accepted Answer

The trophoblast layer is responsible for the formation of the placenta in mammalian embryos, therefore the correct choice is D. This layer differentiates into two layers: the cytotrophoblast and syncytiotrophoblast, which are responsible for implantation and nutrient exchange between the mother and fetus. Choices A, B, and C are not correct because they are not associated with embryonic development or the trophoblast layer.

In Mammals,the Trophoblast Layer in a Blastocyst Will Become Part