Adjacent cells are interconnected by

Options

A. desmosomes
B. vacuoles
C. mitochondria
D. E.R.

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the structures that interconnect adjacent cells. This requires knowledge of cell biology and the types of junctions that exist between cells.

2. **Analyzing the Options**: The options provided are:
- A) Endoplasmic Reticulum (ER)
- B) Mitochondria
- C) Vacuoles
- D) Desmosomes

3. **Evaluating Each Option**:
- **Option A: Endoplasmic Reticulum (ER)**: The ER is a cell organelle involved in the synthesis of proteins and lipids. It does not serve as a connection between adjacent cells. Therefore, this option is incorrect.
- **Option B: Mitochondria**: Mitochondria are known as the powerhouse of the cell, responsible for ATP production. They do not connect adjacent cells, making this option incorrect as well.
- **Option C: Vacuoles**: Vacuoles are membrane-bound organelles that store substances like water and waste. They do not serve to interconnect cells, so this option is also incorrect.
- **Option D: Desmosomes**: Desmosomes are specialized structures that connect adjacent epithelial cells. They provide mechanical stability and strength to tissues by anchoring cells together. This option is correct.

4. **Conclusion**: After evaluating all the options, the correct answer is **D) Desmosomes**. They are the structures that interconnect adjacent cells.