Extra embryonic membrane amnion is not found in amphibians because
They lay eggs in water
Egg hatches in tadpole
Amphibious habit
They have smooth skin
Function of allantois in mammal is
Nebenkern is a part of
Which one of the following events immediately follows the entry of a spermatozoan into an oocyte
The amniotic fluid is taken out with the help of surgical needle and separation of the embryo cells present in this fluid is done by
Accessory sexual character in female is promoted by