<prompt> Formation of the Prochordal plate and the Primitive streak is seen at what age of Development?2 days8 days14 days16 days  <response>: Age in daysDevelopmental Events2Embryo is at two-cell stage3Morula is formed4Blastocyst is formed8Bilaminar disc is formed14Prochordal plate and primitive streak is seen16Intra-embryonic mesoderm is formeddisc is now three-layeredReference: Inderbir Singh Embryology; 10th edition; Page no: 57 