Cones in Gymnosperm plants are :-

Options

A. Bisexual
B. Unisexual
C. Sterile
D. Any of the above

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 often referred to as the "amphibians of the plant kingdom" because they require water for fertilization.

2. **Reproductive Structures**: In gymnosperms, the reproductive structures are known as cones. These cones are formed from specialized leaf-like structures called sporophylls.

3. **Types of Sporophylls**: There are two types of sporophylls in gymnosperms:
- **Microsporophylls**: These are the male sporophylls that produce microspores, which develop into male gametes (pollen).
- **Megasporophylls**: These are the female sporophylls that produce megaspores, which develop into female gametes (ovules).

4. **Cones Formation**: The aggregation of microsporophylls forms male cones (also known as pollen cones), while the aggregation of megasporophylls forms female cones (seed cones).

5. **Nature of Cones**: Since male cones and female cones are produced from different types of sporophylls, they are considered unisexual. This means that each cone type produces only one type of gamete (male or female).

6. **Conclusion**: Therefore, the correct answer to the question "Cones in Gymnosperm plants are:" is **unisexual**.

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