Commonly in a mature fertilised ovule n, 2n and 3 condition is respectively found in :

Options

A. Antipodals , synergids and integuments
B. Antipodals , zygote and PEN
C. Egg , nucellus and endosperm
D. Endosperm , nucellus and egg

Answer

To solve the question regarding the conditions of n, 2n, and 3n in a mature fertilized ovule, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Components of a Mature Fertilized Ovule**:
- A mature fertilized ovule contains an embryo sac, which consists of several types of cells: antipodal cells, synergids, and the egg cell.

2. **Identifying the Nuclei Conditions**:
- **Antipodal Cells**: These are typically haploid (n) cells. They are formed from the megaspore and are involved in the nutrition of the embryo sac.
- **Synergids**: These are also haploid (n) cells. They assist in guiding the pollen tube to the egg cell.
- **Egg Cell**: This is the female gamete and is also haploid (n).
- **Zygote**: This is formed when the male gamete (from pollen) fuses with the egg cell. The zygote is diploid (2n).
- **Primary Endosperm Nucleus**: This is formed when the second male gamete fuses with the two polar nuclei in the embryo sac, resulting in a triploid (3n) condition.

3. **Analyzing the Options**:
- **Option 1**: Antipodal (n), Synergids (n), Integuments (2n) - Incorrect, as integuments are not part of the embryo sac.
- **Option 2**: Antipodal (n), Zygote (2n), Primary Endosperm Nucleus (3n) - Correct, as it reflects the correct conditions of the cells.
- **Option 3**: Egg (n), Nucleus (n), Endosperm (3n) - Incorrect, as the nucleus is not a relevant term in this context.
- **Option 4**: Endosperm (3n), Nucleus (n), Egg (n) - Incorrect, as the nucleus is not relevant here.

4. **Conclusion**:
- The correct answer is **Option 2**: Antipodal (n), Zygote (2n), Primary Endosperm Nucleus (3n).