Transfusion tissue, a modified vascular tissue is found in leaves of

Options

A. Pinus
B. Dryopteris
C. Cycas
D. Both (1) and (3)

Answer

To solve the question regarding the presence of transfusion tissue, a modified vascular tissue found in leaves, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Transfusion Tissue**:
- Transfusion tissue is a specialized type of vascular tissue that plays a role in the conduction of water and nutrients in plants. It is characterized by the fusion of two types of tissues: living parenchyma and non-living lignified tracheids.

2. **Identifying the Plant Groups**:
- Transfusion tissues are primarily found in gymnosperms. Gymnosperms are a group of seed-producing plants that includes conifers, cycads, Ginkgo, and gnetophytes.

3. **Analyzing the Options**:
- The options provided are:
1. Pinus (a genus of coniferous trees, gymnosperms)
2. Triopteris (a type of wood fern, pteridophyte)
3. Cycas (a genus of cycads, gymnosperms)
4. Both 1 and 3 (Pinus and Cycas)

4. **Evaluating Each Option**:
- **Option 1 (Pinus)**: This is a gymnosperm and contains transfusion tissue.
- **Option 2 (Triopteris)**: This is a pteridophyte and does not contain transfusion tissue.
- **Option 3 (Cycas)**: This is also a gymnosperm and contains transfusion tissue.
- **Option 4 (Both 1 and 3)**: Since both Pinus and Cycas are gymnosperms, this option is valid.

5. **Conclusion**:
- Since both Pinus and Cycas belong to the gymnosperm category and contain transfusion tissue, the correct answer is **Option 4: Both 1 and 3**.

### Final Answer:
**Option 4: Both 1 and 3 (Pinus and Cycas)**