Emboly is

Options

A. Migration of micromeres into the blastocoel
B. Migration of macromeres into the blastocel
C. Migration of endoderm,mesoderm and notochord in the blastocoel
D. None of the above.

Answer

**Step-by-Step Solution:**

1. **Understanding the Term "Emboly":**
- Emboly refers to a specific developmental process in embryology, particularly during the formation of the gastrula from the blastula.

2. **Identifying the Options:**
- The options provided are:
a. Migration of micromeres into the blastocell
b. Migration of macromeres into the blastocell
c. Migration of endoderm, mesoderm, and notochord in the blastocell
d. None of the above

3. **Analyzing the Process of Emboly:**
- During emboly, there is a movement of germ layers. The primary germ layers involved are the ectoderm, endoderm, and mesoderm.
- This process is crucial for the formation of the gastrula, which is a stage in embryonic development.

4. **Determining the Correct Answer:**
- Based on the definition and understanding of emboly, the correct option is:
- **Option C: Migration of endoderm, mesoderm, and notochord in the blastocell.**

5. **Final Conclusion:**
- Therefore, the answer to the question "Emboly is" is **Option C**.

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