Which of the following tissue can develop from all the three germinal layers ?

Options

A. Epithelial tissue
B. Muscular tissue
C. Connective tissue
D. Nervous tissue

Answer

To determine which tissue can develop from all three germinal layers (ectoderm, mesoderm, and endoderm), let's analyze each option step by step:

### Step 1: Identify the Germinal Layers
The three primary germinal layers in embryonic development are:
- **Ectoderm**: The outer layer, which gives rise to the nervous system and epidermis (skin).
- **Mesoderm**: The middle layer, which forms muscles, bones, and connective tissues.
- **Endoderm**: The innermost layer, which develops into the lining of the digestive tract and other internal organs.

### Step 2: Analyze Each Tissue Type
- **Epithelial Tissue**: This type of tissue can originate from all three germinal layers. For example:
- Ectoderm gives rise to skin epithelium.
- Endoderm forms the lining of the gastrointestinal tract.
- Mesoderm contributes to the epithelium of various organs.

- **Muscular Tissue**: This tissue primarily develops from the mesoderm. It does not arise from ectoderm or endoderm.

- **Connective Tissue**: Like muscular tissue, connective tissue is mainly derived from the mesoderm. It does not develop from ectoderm or endoderm.

- **Nervous Tissue**: This tissue originates exclusively from the ectoderm. It does not develop from mesoderm or endoderm.

### Step 3: Conclusion
After analyzing the origin of each type of tissue, we can conclude that:
- **Epithelial tissue** is the only type that can develop from all three germinal layers (ectoderm, mesoderm, and endoderm).

Thus, the answer to the question is:
**Epithelial Tissue (a)**