The extra-embryonic membranes of the mammalian embryo are derived from
Formative cells
Follicle cells
Inner cell mass
Trophoblast
Failure of descending testis into scrotum is known as
Which of the following is the endocrine tissue of testes
The permeability of the human placenta to macro-molecules is evidenced by the presence of following in foetal blood
In human females at the time of birth there are two million ova: how many of them normally reach maturity in the course of normal reproductive life
Development of structure and shape of an organism is