In man the foetal membrane which forms the intimate connection with the uterine tissue is
Amnion only
Chorion only
Allantois only
Allanto-chorionic structure
The membrane investing the ovum just outside the membrana granulosa is
The endodermel derivatives include
How many eggs will be formed from $100$ primary oocytes
The fertilization membrane during fertilization is synthesized by
Which of these sets of cells divide slowly