In Gymnosperms, endosperm is formed `:`

Options

A. After fertilization
B. After the development of embryo
C. Before fertilization
D. At the time of fertilization

Answer

To solve the question regarding when endosperm is formed in Gymnosperms, we will analyze the options provided and understand the process of endosperm formation in these plants.

### Step-by-Step Solution:

1. **Understanding Gymnosperms**:
Gymnosperms are a group of seed-producing plants that have seeds that are not enclosed in an ovary (naked seeds).

2. **What is Endosperm?**:
Endosperm is a tissue that provides nutrition to the developing embryo within the seed. In most flowering plants (angiosperms), the endosperm is formed after fertilization.

3. **Endosperm Formation in Angiosperms vs. Gymnosperms**:
In angiosperms, the endosperm is typically triploid, formed after fertilization when the sperm fertilizes the polar nuclei. However, in Gymnosperms, the endosperm is haploid and is formed before fertilization.

4. **Analyzing the Options**:
- **After fertilization**: This is incorrect for Gymnosperms as the endosperm is formed before fertilization.
- **After the development of the embryo**: This is also incorrect since the endosperm precedes the embryo development in Gymnosperms.
- **Before fertilization**: This is the correct option as the endosperm in Gymnosperms is formed before fertilization.

5. **Conclusion**:
Based on the above analysis, the correct answer to the question "In Gymnosperms, endosperm is formed" is **before fertilization**.

### Final Answer:
In Gymnosperms, endosperm is formed **before fertilization**.