Vascular tissue is derived from

Options

A. Epithelium q
B. Ectoderm
C. All germinal layers
D. Mesoderm.

Answer

**Step-by-Step Solution:**

1. **Understanding Vascular Tissue**: Vascular tissue refers to the tissues involved in the transport of fluids and nutrients in the body. In humans, this primarily includes blood and lymph.

2. **Identifying Germ Layers**: In embryonic development, there are three primary germ layers: ectoderm, mesoderm, and endoderm. Each of these layers gives rise to specific tissues and organs.

3. **Role of Ectoderm**: The ectoderm is the outermost layer and primarily develops into the epidermis (skin) and neural tissues (such as the brain and spinal cord).

4. **Role of Mesoderm**: The mesoderm is the middle layer and is responsible for forming many structures, including connective tissues, muscles, the dermis of the skin, and importantly, vascular tissues such as blood and lymph.

5. **Role of Endoderm**: The endoderm is the innermost layer and gives rise to the gastrointestinal tract, liver, lungs, and other internal organs.

6. **Conclusion**: Since vascular tissue (blood and lymph) is derived from the mesoderm, the correct answer to the question is option D: mesoderm.

**Final Answer**: Vascular tissue is derived from the mesoderm.

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