Which of the following is mismatched ?

Options

A. Ectoderm -Epidermis
B. Endoderm-Digestive
C. Mesoderm-Connective tissue
D. None of the above

Answer

To determine which of the following options is mismatched, we will analyze each option provided:

1. **Ectoderm - Epidermis**:
- The ectoderm is the outermost layer of the embryonic germ layers. It is responsible for forming the epidermis, which is the outer layer of the skin.
- This option is **correctly matched**.

2. **Endoderm - Digestive**:
- The endoderm is the innermost layer of the embryonic germ layers. It gives rise to the epithelial lining of the digestive system and other internal organs.
- This option is also **correctly matched**.

3. **Mesoderm - Connective Tissue**:
- The mesoderm is the middle layer of the embryonic germ layers. It is responsible for forming various structures, including connective tissues, muscles, and the circulatory system.
- This option is **correctly matched** as well.

After analyzing all the options, we find that all the pairs are correctly matched. Therefore, the answer to the question is:

**None of the above** (as all options are correctly matched).