Preparation of cell differentiation are completed in-a)Morulab)Blastulac)Gastrulad)NeurulaCorrect answer is option 'B'. Can you explain this answer?

Question

Answer

The preparation for cell differentiation are completed in blastula stage. The process by which the blastula becomes a three-layered embryo, or gastrula, is called gastrulation.

Answer

Cleavage divides the zygote into many tiny cells that serve as the foundation for later development. At the completion of cleavage, the blastula's little cells begin to move around with relative ease, organising themselves into the patterns required for subsequent development. Surface proteins play a vital role in assisting cells to recognise one another and, as a result, in determining which cells adhere to create tissues. In the blastula stage, the preparation for cell differentiation is accomplished. Gastrulation is the process through which a blastula develops into a three-layered embryo, or gastrula.

Answer

Preparation of cell differentiation in Blastula:

Definition:
Blastula is the stage of embryonic development that follows the morula stage. It is characterized by the formation of a fluid-filled cavity called the blastocoel, which is surrounded by a single layer of cells called the blastoderm.

Preparation of cell differentiation:
Cell differentiation is the process by which cells acquire specialized structures and functions. In the Blastula stage, the cells undergo further preparations for cell differentiation. This process involves several key steps:

1. Cell proliferation: In the Blastula stage, the cells undergo rapid proliferation, resulting in an increase in the number of cells. This proliferation is essential for the subsequent differentiation process.

2. Cell migration: Some cells in the Blastula stage migrate to specific regions of the embryo, which is crucial for the formation of different tissue types. For example, cells that will give rise to the nervous system migrate to the dorsal region of the embryo.

3. Germ layer formation: The Blastula stage is also characterized by the formation of three germ layers: ectoderm, mesoderm, and endoderm. Each germ layer will give rise to specific tissues and organs in the later stages of development.

4. Induction: During the Blastula stage, cells communicate with each other through chemical signals, leading to the induction of specific gene expression patterns. These signals play a crucial role in determining the fate of different cell populations.

5. Cellular differentiation: Finally, in the Blastula stage, cells start to differentiate into specialized cell types. This process is regulated by the expression of specific genes and the interaction between neighboring cells.

Conclusion:
In summary, the preparation of cell differentiation occurs in the Blastula stage of embryonic development. This stage is characterized by cell proliferation, migration, germ layer formation, induction, and cellular differentiation. These processes lay the foundation for the subsequent development of different tissues and organs in the embryo.

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