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

**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). This distinguishes them from angiosperms, which have seeds enclosed in fruits.

2. **Endosperm Definition**: The endosperm is a tissue that provides nourishment to the developing embryo within the seed. It is crucial for the growth of the embryo.

3. **Formation of Endosperm in Angiosperms**: In most angiosperms (flowering plants), the endosperm is formed through a process called triple fusion, which occurs after fertilization. This results in a triploid endosperm (3N), as it involves the fusion of one sperm cell with two polar nuclei.

4. **Endosperm Formation in Gymnosperms**: In contrast, gymnosperms form their endosperm before fertilization. The endosperm in gymnosperms is haploid (N), meaning it has half the number of chromosomes compared to the diploid (2N) embryo.

5. **Conclusion**: Therefore, in gymnosperms, the endosperm is formed before fertilization, which is different from the process in angiosperms.

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

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