What type of cell division takes place in the functional megaspore initially in angiosperms?

Options

A. Homeotypic without cytokinesis
B. Reductional without cytokinesis
C. Somatic followed by cytokinesis
D. Meiotic followed by cytokinesis

Answer

To answer the question about the type of cell division that takes place in the functional megaspore initially in angiosperms, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Functional Megaspore**:
- The functional megaspore is a haploid cell that develops into the embryo sac in angiosperms.

2. **Understand the Type of Division**:
- The division that occurs in the functional megaspore is crucial for the formation of the embryo sac.

3. **Determine the Nature of the Division**:
- The division that occurs is a type of mitotic division, specifically referred to as homotypic mitosis.

4. **Cytokinesis Consideration**:
- It is important to note that this division occurs without cytokinesis initially. This means that the cytoplasm does not divide after the nuclear division, leading to multiple nuclei within a single cell.

5. **Formation of Nuclei**:
- After several rounds of division, typically, eight nuclei are formed within the embryo sac.

6. **Final Structure**:
- Eventually, cell walls form around these nuclei, except for the two polar nuclei, leading to the mature embryo sac.

7. **Conclusion**:
- Therefore, the correct answer to the question is that the functional megaspore undergoes homotypic mitosis without cytokinesis.

### Final Answer:
The type of cell division that takes place in the functional megaspore initially in angiosperms is **homotypic mitosis without cytokinesis**.

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