Identify the correctly matched pair/pairs of the germ layers and their derivatives.
A. Ectoderm-Epidermis
B. Endoderm-Dermis
C.Mesoderm-Muscles
D.Mesoderm-Notochord
E. Endoderm-Enamel of teeth

Options

A. A and D
B. A and B
C. A, C and D
D. A, B, C and E

Explanation

To solve the question of identifying the correctly matched pairs of germ layers and their derivatives, we will analyze each option provided:

### Step-by-Step Solution:

1. **Understanding Germ Layers**:
- The three primary germ layers formed during embryonic development are ectoderm, mesoderm, and endoderm. Each layer gives rise to specific tissues and organs in the body.

2. **Analyzing Option A: Ectoderm - Epidermis**:
- The ectoderm is the outermost layer and is responsible for forming the epidermis, which is the outer layer of skin.
- **Conclusion**: This pair is correctly matched.

3. **Analyzing Option B: Endoderm - Dermis**:
- The endoderm is the innermost layer and primarily forms the lining of the gut and associated organs. The dermis, however, is derived from the mesoderm.
- **Conclusion**: This pair is incorrectly matched.

4. **Analyzing Option C: Mesoderm - Muscles**:
- The mesoderm is the middle layer and is responsible for forming muscles, bones, and the circulatory system.
- **Conclusion**: This pair is correctly matched.

5. **Analyzing Option D: Mesoderm - Notochord**:
- The notochord is a structure that is derived from the mesoderm and plays a crucial role in the development of the vertebral column.
- **Conclusion**: This pair is correctly matched.

6. **Analyzing Option E: Endoderm - Enamel of teeth**:
- The enamel of teeth is actually formed from the ectoderm, not the endoderm.
- **Conclusion**: This pair is incorrectly matched.

### Summary of Correctly Matched Pairs:
- Correctly matched pairs are:
- A. Ectoderm - Epidermis
- C. Mesoderm - Muscles
- D. Mesoderm - Notochord

### Final Answer:
The correct options are A, C, and D.

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