Failure of descending testis into scrotum is known as
Impotency
Cryptorchidism
Castration
Paedogenesis
(b)Cryptorchidism is nondescent of testes in scrotum, person becomes sterile.
The cleavage having incomplete division of egg is known as
Vegetal hemisphere of egg consists of
Umbilical cord in mammals, contains
The yolk plug of gastrula represents in the later stage its
Cleavage was first observed by
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