Gyanogamones are secretions from
Ovum or unfertilized egg
Spermatids
Cells of Graafian follicle
Ovary
The sperm produces substances of enzymatic nature called sperm lysin. In mammals, it is called
During cleavage $DNA$ synthesis
The seminiferous tubules of the testis opens into the vasa efferentia by
The corpus luteum secretes progesterone which negatively feeds back and inhibits the release of
Which one of the following is the incorrect match of the events occurring during menstrual cycle?