Gastrulation MCQ - Practice Questions with Answers

• The blastula passes into the stage called gastrula by the process called gastrulation.
• This phase lays down the blueprint of the future organization of the developing embryo.
• This stage results in:
  • The establishment and diff­erentiation of three primary germinal layers—ectoderm, mesoderm and endoderm
  • The establishment of nuclear differentiation
  • The beginning of the control of genetic factors over development

The process of gastrulation can be summarised by the following events:

• Formation of the embryonic disc
• Formation of the amniotic cavity
• Formation of chorion and amnion
• Formation of the yolk sac
• Formation of embryonic layers