Pick the odd one out from each series given below and select the correct option.I. Scrotum, rete testis, oviduct, vas deferens.II. Ovary, uterus, vagina, scrotum.III. Bulbourethral gland, Graafian follicle, corpus luteum, cervix.IV. Prostate, seminiferous tubules, seminal vesicles, cowper's gland.

Group 1 : Oviduct is the odd one. It a part of the female reproductive system while the rest are male reproductive parts.Group 2 : Scrotum is the odd one. It is a part of the male reproductive tract while the rest are parts of female reproductive system.Group 3 : Bulbourethral gland is the odd one. It is a male accessory gland. The rest are present in females.Group 4 : Seminiferous tubules are parts of the testis. The rest are accessory glands of male reproductive system.