The polar nuclei are present in

Options

A. the egg.
B. the synergid.
C. the antipodal.
D. the central cell.

Answer

To solve the question regarding the presence of polar nuclei, we will analyze the structure of the female gametophyte in angiosperms, specifically focusing on the embryo sac.

### Step-by-Step Solution:

1. **Understanding the Embryo Sac**:
- The embryo sac is the female gametophyte in angiosperms (flowering plants). It contains several types of cells, including the egg cell, synergids, antipodal cells, and polar nuclei.

**Hint**: Remember that the embryo sac is crucial for reproduction in flowering plants.

2. **Identifying the Components**:
- The embryo sac consists of:
- **Egg Apparatus**: Located at the micropyle end, consisting of one egg cell and two synergids.
- **Antipodal Cells**: Located at the chalazal end, typically three in number.
- **Central Cell**: Located in the center of the embryo sac, which contains the polar nuclei.

**Hint**: Visualize the structure of the embryo sac to better understand the arrangement of these cells.

3. **Location of Polar Nuclei**:
- The polar nuclei are specifically located in the central cell of the embryo sac. They are two nuclei that will eventually fuse to form a diploid secondary nucleus during fertilization.

**Hint**: Focus on the central cell when considering where polar nuclei are found.

4. **Conclusion**:
- Based on the above analysis, the polar nuclei are present in the **central cell** of the embryo sac.

**Final Answer**: The polar nuclei are present in the central cell.