In gymnosperms, the seeds that develop post-fertilisation, are naked. It means `:`

Options

A. not covered by any ovule wall
B. the are very small
C. they loose their wall at maturity
D. not covered by any ovary wall

Answer

**Step-by-Step Solution:**

1. **Understanding Gymnosperms**: Gymnosperms are a group of seed-producing plants that include conifers, cycads, Ginkgo, and gnetophytes. They are characterized by having seeds that are not enclosed in an ovary.

2. **Definition of "Naked Seeds"**: The term "naked seeds" refers to the fact that the seeds of gymnosperms are not covered by any protective fruit or ovary wall. This is in contrast to angiosperms, where seeds are enclosed within a fruit.

3. **Seed Development**: In gymnosperms, seeds develop from ovules after fertilization. The ovules are exposed and not surrounded by any ovary wall, which means that they are directly exposed to the environment.

4. **Absence of Fruit**: Since gymnosperms do not have an ovary wall, they do not produce fruits. Fruits are derived from the ovary wall after fertilization, and since gymnosperms lack this structure, they do not form fruits.

5. **Conclusion**: Therefore, when we say that the seeds in gymnosperms are "naked," it means that they are not covered by any ovule wall or ovary wall, making them exposed and free.

**Final Answer**: In gymnosperms, the seeds that develop post-fertilization are naked, meaning they are not covered by any ovule wall or ovary wall, and hence, they do not produce fruits.

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