Human Reproduction Question 435

Question: During the development of embryo which of the following occur first [AFMC 1995]

Options:

A) Differentiation of tissue

B) Differentiation of cells

C) Differentiation of organs

D) Differentiation of organ system

Show Answer

Answer:

Correct Answer: B

Solution:

Blastula differentiate into various regions and cells (blastomeres) of a particular region form a particular part of adult body, hence these areas are called presumptive areas and at this stage if cells of a particular area are removed the adult lacks a particular part from its body.