What is the function of micropyle in an angiospermic ovule?

Answer

### Step-by-Step Solution:

1. **Understanding the Structure of the Ovule**:
- The ovule is a crucial part of the angiosperm reproductive system, located within the ovary of the flower. It contains the embryo sac, which houses the female gametes.

2. **Identifying the Micropyle**:
- The micropyle is a small opening located at the micropylar end of the ovule. It is the point of entry for the pollen tube.

3. **Role of the Pollen Tube**:
- During fertilization, the pollen tube, which carries male gametes, grows down the style and enters the ovule through the micropyle.

4. **Function of the Micropyle**:
- The primary function of the micropyle is to facilitate the entry of the pollen tube into the ovule. This is essential for fertilization to occur.

5. **Fertilization Process**:
- Once the pollen tube enters the ovule through the micropyle, one male gamete fuses with the egg cell to form a zygote, while the other male gamete fuses with the polar nuclei to form the endosperm.

### Final Answer:
The function of the micropyle in an angiospermic ovule is to allow the entry of the pollen tube, which is essential for the fertilization process.

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