In the developing ovule of most of the Angiosperms , megaspore mother cell is situated within the nucellus

Options

A. towards the micropyle
B. towards the chalaza
C. in the centre , equidistant from micropyle and chalaze
D. towards the raphe

Answer

To solve the question regarding the location of the megaspore mother cell in the developing ovule of most angiosperms, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Structure of the Ovule**:
- The ovule is a crucial part of the reproductive structure in angiosperms. It contains the nucellus, which is a tissue that provides nourishment.

2. **Identifying the Megaspore Mother Cell**:
- Within the nucellus, there is a specific cell that is larger and has a prominent nucleus. This cell is known as the megaspore mother cell (or megasporocyte).

3. **Location of the Megaspore Mother Cell**:
- The megaspore mother cell is situated towards the micropilar end of the ovule. The micropilar end is where the ovule connects to the ovary and is critical for fertilization.

4. **Process of Megasporogenesis**:
- The megaspore mother cell undergoes meiosis to produce four megaspores. Typically, in angiosperms, three of these megaspores degenerate, and one survives to develop into the female gametophyte (embryo sac).

5. **Conclusion**:
- Therefore, the correct answer to the question is that the megaspore mother cell is located towards the micropilar end of the nucellus in the developing ovule of most angiosperms.

### Final Answer:
The megaspore mother cell is situated towards the micropilar end of the nucellus in the developing ovule of most angiosperms.

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