Watch complete video answer for “The structure which provides a vascular connection between th” of Biology Class 12th. Get FREE solutions to all questions from chapter REPRODUCTION IN LOWER AND HIGHER ANJMDLS.

In human embryology, weeks six through eight are characterized by the growth and differentiation of tissues into organs. This process is known as organogenesis and occurs from weeks three through eight; the embryonic period. During week three, the process of gastrulation occurs, which establishes three distinct cell layers; the mesoderm, endoderm, and ectoderm. These are the primary germ cell.