Question

What is the difference between morula and blastula?

Answer 1

Early embryonic development:

1. In this process, an embryo gets developed from a fertilized egg.
2. This embryo subsequently gets developed into a young full-fledged organism.
3. It includes several stages namely- cleavage, blastulation, implantation, gastrulation, and organogenesis.
4. Morula gets produced during the cleavage step of early embryonic development.
5. Blastulation leads to the formation of the blastula.

SNo	Morula	Blastula
1	Morula is a solid ball of cells formed by the division of a fertilized ovum. Morula gets converted to blastula during blastulation.	It's a hollow sphere of cells that surrounds the blastocoel, which is formed during embryo development.
2	It gets formed after 4 to 5 days of fertilization.	It takes 5 to 10 days after fertilization to get formed.
3	It is a solid cell mass.	It is a hollow structure.
4	The quick cleavage of the zygote produces a ball of little, spherical cells making up a morula.	It consists of a blastocoel, a fluid-filled cavity, and a spherical cell layer of blastomeres.
5	It is made up of over a hundred cells.	There are a total of 123 cells in the blastula.
6	In a process known as blastulation, it transforms into a blastula.	In a process known as blastulation, it transforms into a blastula.