Which of the following are secretions produced by the spermatozoa at the time of fertilization?
Fertilizin and anti-fertilizin
Anti-fertilizin and sperm lysin
Fertilizin and sperm lysin
Only sperm lysin
Location - function : Testis and Ovary
Amniotic fluid protects the foetus from
Type of placenta in the human is
Zona pellucida of mammalian egg serves which of the following purpose
Which cavity arises by the invagination of endoderm and mesoderm