Which one is female gametophyte

Options

A. Embryo
B. Embryosac
C. Endosperm
D. Pistil

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the identification of the female gametophyte from the given options: embryo, embryo sac, endosperm, or pistil.

2. **Defining Key Terms**:
- **Embryo**: This is the early stage of development that occurs after fertilization, resulting from the zygote undergoing embryogenesis.
- **Endosperm**: This is a tissue that provides nourishment to the developing embryo and is formed from the fusion of the second male gamete with the polar nuclei.
- **Pistil**: This is the female reproductive part of a flower, which consists of one or more carpels. It is not the gametophyte itself but rather the structure housing the gametophyte.

3. **Identifying the Female Gametophyte**:
- The female gametophyte in flowering plants is known as the **embryo sac**. It is also referred to as the megagametophyte.
- The embryo sac contains the egg cell and is composed of a total of eight nuclei: one egg nucleus, two synergids, three antipodal cells, and one central cell with two polar nuclei.

4. **Conclusion**: Based on the definitions and descriptions provided, the correct answer to the question "Which one is the female gametophyte?" is **embryo sac**.

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