<prompt> Which of the following describes In vitro feilization: September 2005Method to judge the time of ovulation so that coitus can result in feilizationUse of hormones to promote feilization in the tubesRemoving mature ova, feilizing it with sperm and implanting back in uterusAificial insemination  <response>: Ans. C: Removing mature ova, feilizing it with sperm and implanting back in uterusIn Vitro feilization is a technique employed in cases of infeility. Steps include removing mature ova, feilizing it with sperm and implanting one or more of them back in uterus at the four cell stage. It has a 5-10 chance of producing a live bih. 