The sporophyte of mosses is:-

Options

A. Parasite
B. Semiparasite
C. Free living
D. Differentiated in root, stem and leaves

Answer

To answer the question regarding the sporophyte of mosses, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Life Cycle of Mosses**:
- Mosses exhibit a life cycle that alternates between two generations: the gametophyte (haploid) and the sporophyte (diploid).

2. **Identifying the Nature of the Sporophyte**:
- The sporophyte of mosses is not independent; it is dependent on the gametophyte for its nutrition and support.

3. **Analyzing the Options**:
- **Option 1: Parasite** - This implies that the sporophyte would be living off another organism. This is not correct for mosses.
- **Option 2: Semi-parasite** - This suggests some level of independence, which does not accurately describe the relationship between the sporophyte and gametophyte in mosses.
- **Option 3: Free-living** - This would mean that the sporophyte can survive independently, which is also incorrect as it relies on the gametophyte.
- **Option 4: Differentiated in root, stem, and leaves** - While the sporophyte does have structures that resemble roots, stems, and leaves, it is not fully differentiated in the same way as vascular plants.

4. **Conclusion**:
- The correct characterization of the sporophyte of mosses is that it is dependent on the gametophyte for nutrition and is not free-living. Therefore, the best answer to the question is that the sporophyte is a **parasite** on the gametophyte.

### Final Answer:
The sporophyte of mosses is a **parasite** on the gametophyte.