Conception of female due to deposition of semen on the vulva, without penetration of vagina is called

  A) Super foetation

    B) Super fecundation

    C) Fecundation ab extra

    D) Sub fecundation. 

Answer: C) Fecundation ab extra

Explanation: 

SUPER FOETATION: 

- Fertilisation of a second ovum in a woman who is already pregnant.

- Ovulation may occur during first trimester of pregnancy until decidua vera comes into 

   apposition with decidua reflexa and decidual cavity gets obliterated.

- Fertilisation of newly released ovum may occur following coitus.

SUPER FECUNDATION:

- Fertilisation of two ova which have been discharged from ovary at the same period by 

   two separate acts of coitus committed at short intervals.

FECUNDATION AB EXTRA:

- Conception of female due to deposition of semen on the vulva, without penetration of 

  vagina by the penis.

- The insemination occurring due to passage of spermatozoa from external genitalia to the uterus. 

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