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2.Human Reproduction
normal
The extra-embryonic membranes of mammalian embryo are derived from
A
Trophoblast
B
Follicle cells
C
Formative cells
D
Inner cell mass
Solution
Trophoblast ia an epithelium surrounding the mammalian blastocyst forming outer layer of chorion and becoming part of the embryonic component of extraembryonic membranes.
Standard 12
Biology