Question

The formation of the notochord takes place from

• A. Primary ectoderm
• B. Primary mesoderm
• C. Primary endoderm
• D. Anterior part is from mesoderm while remaining from endoderm

Answer 1

The correct option is B Primary mesoderm

• The notochord is a flexible rod-like structure that is formed from axial mesoderm or chorda mesoderm.
• The notochord's formation starts during three weeks in humans and it contributes to the formation of the vertebral column.
  

So the correct answer is option B.