<prompt> Test tube baby is produced by :Sperm and ovum are directly implanted into fallopian tubeSperm and ovum are feilized in test tube and implantedFetus is grown in test tubeOnly sperm is transferred  <response>: Ans. is b i.e. Sperm and ovum are feilized in test tube and implanted In vitro feilization is a medical technique in which a womans egg is placed with her husbands sperm in a laboratory environment to promote feilization. The result is so called test-tube baby. 