Question
Biology Question on human reproduction
The extra embryonic membranes of mammalian embryo are derived from
A
inner cell mass
B
formative cells
C
trophoblast
D
follicle cells
Answer
trophoblast
Explanation
Solution
The extra embryonic membranes of mammalian embryo are derived from trophoblast. After the cleavage of the zygote, blastocyst is formed. Then, trophoblast, the epithelial layer surrounding the blastocyst is formed. This trophoblast cells are destined to form most of the extra embryonic membranes in mammals.