Which of the following tissues has cells in lacunae?

Options

A. Epithelial tissue
B. Bone
C. Cartilage
D. Both (b) and (c)

Answer

To determine which of the following tissues has cells in lacunae, we can analyze each option step by step.

### Step-by-Step Solution:

1. **Understanding Lacunae**:
- Lacunae are small cavities found within certain tissues. They serve as spaces that house specific types of cells.

2. **Evaluating Epithelial Tissue**:
- Epithelial tissue covers body surfaces and lines cavities and organs. It consists of tightly packed cells, known as epithelial cells, which do not exist in lacunae.
- **Conclusion**: Epithelial tissue does not have cells in lacunae.

3. **Evaluating Bone Tissue**:
- Bone is a type of connective tissue. The cells in bone are called osteocytes, which are located in small cavities known as lacunae.
- **Conclusion**: Bone tissue has cells in lacunae.

4. **Evaluating Cartilage**:
- Cartilage is also a type of connective tissue. The cells in cartilage are known as chondrocytes, and they are also found in lacunae.
- **Conclusion**: Cartilage tissue has cells in lacunae.

5. **Final Evaluation**:
- The options provided are:
- A. Epithelial tissue (incorrect)
- B. Bone (correct)
- C. Cartilage (correct)
- D. Both B and C (correct)
- Since both bone and cartilage have cells in lacunae, the correct answer is option D: Both B and C.

### Final Answer:
The tissues that have cells in lacunae are **Bone and Cartilage** (Option D).