Question

List the following in the correct order:

zygote, neural fold, blastocyst, neural plate, gastrula, morula, neural tube

Answer 1

Ans:; I have writen it in a sequence or order only

1) Zygote:- it is formed by the fusion of male and female gametes. Around day 14 of menstrual cycle.

2) Morula:- single cell Zygote divide to form a multicellular str called Morula.

3) Blastocyst:- a cavity appeares in Morula , which lead to formation of blastocyst. And there is a inner cell mass.

4) Gastula:- In this stage inner cell mass differentiate to form 3 germ layers. Endo , ecto and mesoderm.

5) neural plate:- ectoderm which is present above the notocord form neural plate.

6) neural fold :- the neural plate form a grove like str called neural fold.

7) neural tube:- neural fold completely form a tube which futher form all parts of CNS.