How many nuclei are involved in the process of Fertilization in the flowering plants ?

Options

A. 4
B. 6
C. 5
D. 7

Answer

To determine how many nuclei are involved in the process of fertilization in flowering plants, particularly angiosperms, we can analyze the process of double fertilization.

### Step-by-Step Solution:

1. **Understanding Double Fertilization**:
In flowering plants (angiosperms), the process of fertilization involves two distinct fusions, known as double fertilization.

2. **First Fusion**:
- In the first fusion, one sperm cell fuses with the egg cell.
- This fusion results in the formation of the embryo.
- **Nuclei involved**: 1 sperm nucleus + 1 egg nucleus = 2 nuclei.

3. **Second Fusion**:
- In the second fusion, another sperm cell fuses with two polar nuclei present in the central cell of the ovule.
- This fusion produces the endosperm, which nourishes the developing embryo.
- **Nuclei involved**: 1 sperm nucleus + 2 polar nuclei = 3 nuclei.

4. **Total Nuclei Count**:
- From the first fusion, we have 2 nuclei (1 egg + 1 sperm).
- From the second fusion, we have 3 nuclei (1 sperm + 2 polar).
- Therefore, the total number of nuclei involved in fertilization is:
- 2 (from first fusion) + 3 (from second fusion) = 5 nuclei.

5. **Conclusion**:
- Thus, the total number of nuclei involved in the fertilization process in flowering plants is **5**.

### Final Answer:
The total number of nuclei involved in the process of fertilization in flowering plants is **5**.