The central cell after triple fusion becomes the

Options

A. PEN
B. PEC
C. Secondary nucleus
D. All of these

Answer

To answer the question, "The central cell after triple fusion becomes the," we need to understand the process of double fertilization in flowering plants. Here's a step-by-step solution:

### Step-by-Step Solution:

1. **Understanding Double Fertilization**:
- In flowering plants, double fertilization is a unique process that involves two fusions. The first fusion is between the male gamete (sperm) and the female gamete (egg), which results in the formation of a zygote. This is known as syngamy.

2. **Identifying the Role of the Central Cell**:
- The central cell in the embryo sac contains two polar nuclei. During the process of double fertilization, a second male gamete travels to the central cell.

3. **Triple Fusion Process**:
- The second male gamete fuses with the two polar nuclei in the central cell. This fusion is referred to as triple fusion because it involves three nuclei: the two polar nuclei and one male gamete.

4. **Formation of Primary Endosperm Nucleus (PEN)**:
- The result of this triple fusion is the formation of a triploid nucleus known as the primary endosperm nucleus (PEN). This nucleus will eventually develop into the endosperm, which provides nourishment to the developing embryo.

5. **Conclusion**:
- Therefore, after triple fusion, the central cell becomes the primary endosperm nucleus (PEN).

### Final Answer:
The central cell after triple fusion becomes the **Primary Endosperm Nucleus (PEN)**.

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