Which one is the female gamete in embryo sac

Options

A. Synergid
B. Antipodal cells
C. Oosphere
D. Central cell and egg apparatus

Answer

To determine which one is the female gamete in the embryo sac, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Components of the Embryo Sac**:
- The embryo sac consists of several types of cells: synergids, antipodal cells, central cells, and the egg cell (oosphere).

2. **Identifying the Role of Each Cell Type**:
- **Synergids**: These are two haploid cells located at the micropilar end of the embryo sac. They assist in the fertilization process but are not gametes themselves.
- **Antipodal Cells**: These are three cells located at the chalazal end of the embryo sac. They do not play a role in fertilization and are not gametes.
- **Central Cells**: These cells are formed by the fusion of two polar nuclei and are involved in the formation of the endosperm after fertilization but are not gametes.
- **Oosphere (Egg Cell)**: This is the female gamete located at the micropilar end of the embryo sac. It is the cell that gets fertilized by the male gamete (sperm cell).

3. **Conclusion**:
- The female gamete in the embryo sac is the **oosphere** (also known as the egg cell).

### Final Answer:
The female gamete in the embryo sac is the **oosphere**.

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