Archesporium of ovule is

Options

A. Single celled derived from nucellar epidermis
B. Single celled derived from nucellar hypodermis
C. Multicellular derived from nucellar epidermis
D. Multicellular derived from nucellar hypodermis.

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the nature of the archesporium of the ovule. We need to determine whether it is a single or multicellular structure and from which part of the ovule it is derived.

2. **Defining Archesporium**: The archesporium is a group of cells in the ovule that gives rise to the megasporangium and ultimately to the embryo sac. It is crucial for the formation of female gametes in plants.

3. **Identifying the Options**: The options provided are:
- A) Single cell derived from nucellar epidermis
- B) Single cell derived from nucellar hypodermis
- C) Multicellular derived from nucellar epidermis
- D) Multicellular derived from nucellar hypodermis

4. **Analyzing the Options**:
- **Single Cell vs. Multicellular**: The archesporium is known to be a single cell that eventually divides to form the megasporangium.
- **Source of Archesporium**: The archesporium is derived from the nucellar cells. The nucellar hypodermis is the layer from which the archesporium originates.

5. **Correct Answer**: Based on the analysis, the correct answer is:
- **B) Single cell derived from nucellar hypodermis**.

6. **Conclusion**: The archesporium of the ovule is a single cell that is derived from the nucellar hypodermis, which plays a critical role in the development of the embryo sac.

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