Multiple choice

The three germ layer formation in human embryo takes place during

  1. cleavage

  2. blastula

  3. organogenesis

  4. gastrula

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

 Gastrula stage follows after blastula and during this stage the cells of blastula develop into a tri-laminar structure and the three germ layers namely ectoderm,mesoderm and endoderm develop.