Most of the gymnosperms have

Options

A. Both archegonia and antheridia
B. Antheridia but no archegonia
C. Archegonia but no antheridia
D. No antheridia or archegonia

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 (unlike angiosperms).

2. **Identifying Key Structures**: In the context of plant reproduction, two important structures are:
- **Archegonia**: The female reproductive structure that produces eggs.
- **Antheridia**: The male reproductive structure that produces sperm.

3. **Presence of Structures in Gymnosperms**:
- Archegonia are present in gymnosperms. They play a crucial role in the reproduction of these plants.
- Antheridia, however, are not present in gymnosperms. Instead, gymnosperms rely on pollen for fertilization, which is produced in male cones.

4. **Evaluating the Options**:
- **Option A**: Both Archegonia and Antheridia - Incorrect, as Antheridia are not present in gymnosperms.
- **Option B**: Antheridia but no Archegonia - Incorrect, as Archegonia are present in gymnosperms.
- **Option C**: Archegonia but no Antheridia - Correct, as gymnosperms have Archegonia but lack Antheridia.
- **Option D**: No Antheridia or Archegonia - Incorrect, as Archegonia are present.

5. **Conclusion**: The correct answer is **Option C**: Gymnosperms have Archegonia but no Antheridia.

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