The gametophytes of pteridophytes bear

Options

A. Foot, seta and capsule
B. Non jacketed sex organs
C. Male and female sex organs called antheridia and archegonia respectively
D. More than one option is correct

Answer

### Step-by-Step Solution:

1. **Understanding Pteridophytes**:
- Pteridophytes are the oldest vascular plants characterized by a differentiated body consisting of roots, stems, and leaves.

2. **Sporophyte Phase**:
- The dominant phase in pteridophytes is the sporophyte phase, which contains spore mother cells. These cells undergo meiosis to produce spores.

3. **Germination of Spores**:
- When the spores germinate, they develop into small, multicellular, free-living, and photosynthetic structures known as gametophytes.

4. **Gametophyte in Ferns**:
- In ferns, which are a type of pteridophyte, the gametophyte is specifically referred to as the prothallus.

5. **Production of Gametes**:
- The gametophytes are responsible for producing gametes. For this, they must have male and female sex organs.

6. **Identifying the Sex Organs**:
- The male sex organ is called antheridia, and the female sex organ is called archegonia.

7. **Evaluating the Options**:
- **Option 1**: "Foot, seta, and capsule" – Incorrect, as these terms are associated with bryophytes.
- **Option 2**: "Non-jacketed sex organs" – Incorrect, as pteridophytes have jacketed sex organs.
- **Option 3**: "Male and female sex organs called antheridia and archegonia respectively" – Correct.
- **Option 4**: "More than one option is correct" – Incorrect, as only one option is correct.

8. **Conclusion**:
- The correct answer is that the gametophytes of pteridophytes bear male and female sex organs called antheridia and archegonia respectively.