The signals for parturition originates from the fully developed foetus and followed by placenta causing the mild contractions called
Foetal ejection reflex
Embryo ejection reflex
Blastocoel ejaculation reflex
Still birth
Formation of notochord or the central axial chord in vertebrates is known as
The first sign of the growing foetus may be noticed by listening to the heart sound carefully through the stethoscope. Embryo's heart is formed _________.
Animal $\quad$ Gestation period
$GnRH$ stimulates two hormones from anterior lobe of pituitary
In humans, what is the ratio of the number of gametes produced from one male primary sex cell to the number of gametes produced from one female primary sex cell ?
Graafian follicles are produced by the ovary by the process of