<prompt> Feilised ovum reaches the uterine cavity by:4-5 days after feilisation6-7 days after feilisation7-9 days after feilisation2-3 days after feilisation  <response>: Zygote enters the uterine cavity in the form of Morula on 4 that day after feilisation. Ref:Datta Obs 9 e pg 24;JB Sharma Obs of 19. 