The shortest gestation period is seen in
Man
Elephant
Cat
Mouse
Which extraembryonic membrane in humans prevents desiccation of the embryo inside the uterus?
Foetal ejection reflex in human female is induced by
Allantois develops from the embryonic
Why the testes in human beings and mammals are situated outside the abdominal cavity within a pouch called scrotum?
When more than one sperm establish contact and penetrate into the egg, then it is called