In angiosperms, the endoperm is

Options

A. Short lived
B. Persistent female gametophyte
C. Formed before fertilisation
D. Formed after fertilisation

Answer

To solve the question "In angiosperms, the endosperm is," we need to analyze the options provided and understand the concept of endosperm in angiosperms.

### Step-by-Step Solution:

1. **Understanding Endosperm**:
- Endosperm is a tissue that provides nutrition to the developing embryo in seed plants, particularly in angiosperms.
- It is formed as a result of a process known as double fertilization, which is unique to angiosperms.

2. **Double Fertilization**:
- In double fertilization, one male gamete fuses with the egg cell to form the zygote (this is called syngamy).
- The other male gamete fuses with two polar nuclei to form the primary endosperm nucleus (PEN), which develops into the endosperm.

3. **Analyzing the Options**:
- **Option 1: Short-lived**: This is incorrect. The endosperm can be either short-lived or persistent depending on the species, but it is not universally short-lived.
- **Option 2: Persistent female gametophyte**: This is also incorrect. The endosperm is not a female gametophyte; it is a separate tissue formed after fertilization.
- **Option 3: Formed before fertilization**: This is incorrect. The endosperm is formed after fertilization.
- **Option 4: Formed after fertilization**: This is correct. The endosperm is indeed formed after the fertilization process.

4. **Conclusion**:
- Based on the analysis of the options, the correct answer is that in angiosperms, the endosperm is formed after fertilization.

### Final Answer:
The endosperm in angiosperms is formed after fertilization.