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When do the three germinal layers diffre...

When do the three germinal layers diffrentiate

A

Blastula

B

Gastrula

C

Cleavage

D

Fertilization.

Text Solution

AI Generated Solution

The correct Answer is:
### Step-by-Step Solution: 1. **Understanding Germinal Layers**: The three germinal layers are the ectoderm, mesoderm, and endoderm. These layers are crucial for the development of various tissues and organs in an organism. 2. **Identifying the Stages of Development**: The stages of early embryonic development include fertilization, cleavage, blastula, and gastrula. Each of these stages plays a role in the formation and organization of the embryo. 3. **Recognizing the Key Stage for Differentiation**: The differentiation of the three germinal layers occurs during the gastrula stage. This process is known as gastrulation. 4. **Conclusion**: Therefore, the correct answer to the question of when the three germinal layers differentiate is during the gastrula stage. ### Final Answer: The three germinal layers differentiate during the **Gastrula** stage (Option B). ---
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