Maiden Hair Tree is

Options

A. Bottle Brush
B. Araucaria
C. Ginkgo
D. Juniperus.

Answer

**Step-by-Step Text Solution:**

1. **Understanding the Question**: The question asks where the hydrostereome or transfusion tissue is found among the options provided: gymnosperm root, gymnosperm leaf, gymnosperm stem, or all of the above.

2. **Defining Transfusion Tissue**: Transfusion tissue, also known as hydrostereome, is a specialized tissue that aids in the conduction of water and nutrients. It is primarily associated with the vascular bundles in certain plants.

3. **Analyzing Each Option**:
- **Option 1: Gymnosperm Root**: Transfusion tissue is not typically found in the roots of gymnosperms. Therefore, this option is incorrect.
- **Option 2: Gymnosperm Leaf**: This is the correct option. Transfusion tissue is characteristically found around the vascular bundles in the leaves of gymnosperms, such as in Pinus and Cycus.
- **Option 3: Gymnosperm Stem**: Similar to roots, transfusion tissue is not found in the stems of gymnosperms. Thus, this option is also incorrect.
- **Option 4: All of the Above**: Since transfusion tissue is not found in roots or stems, this option is incorrect.

4. **Conclusion**: The only correct option is **Option 2: Gymnosperm Leaf**, as transfusion tissue is specifically located around the vascular bundles in the leaves of gymnosperms.

**Final Answer**: Option 2: Gymnosperm Leaf

---