In mammals the chorion and the allantois together form
Placenta
Endometrium
Uterus
Yolk sac
Which one of the following is derived from ectoderm
The maximum growth rate occurs in
All extra embryonic membranes
Why the testes are situated in the scrotum, which is located outside the abdominal cavity ?
Which of the following is last part of the oviduct, which has narrow lumen and joins with the uterus?