What is not true for an angiospermic embryo sac?

Options

A. One male gamete is discharged into it during ferilisation
B. It is present within an ovule
C. It represents female gametophyte
D. Its formation is preceded by meiosis

Answer

To determine what is not true for an angiospermic embryo sac, we need to analyze the provided statements regarding its characteristics.

### Step-by-Step Solution:

1. **Understanding the Embryo Sac**: The embryo sac is the female gametophyte in angiosperms (flowering plants). It is located within the ovule and plays a crucial role in reproduction.

2. **Evaluating the Statements**:
- **Statement 1**: "One male gamete is discharged into it during fertilization."
- This statement is incorrect. In angiosperms, **two male gametes** are discharged into the embryo sac during fertilization.

- **Statement 2**: "It is present within the ovule."
- This statement is correct. The embryo sac is indeed located within the ovule.

- **Statement 3**: "Represents the female gametophyte."
- This statement is also correct. The embryo sac is the female gametophyte of angiosperms.

- **Statement 4**: "Its formation is preceded by meiosis."
- This statement is correct as well. The formation of the embryo sac involves meiosis, leading to haploid cells.

3. **Identifying the Incorrect Statement**:
- From the evaluation, the first statement is the only one that is not true for an angiospermic embryo sac, as it incorrectly states that only one male gamete is involved in fertilization.

### Conclusion:
The statement that is not true for an angiospermic embryo sac is: **"One male gamete is discharged into it during fertilization."**

---