Lysosomes are absent in animals cells

Options

A. Erythrocytes
B. Plasma cells
C. Nerve cells
D. Muscle cells

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question states that lysosomes are absent in animal cells. We need to identify which specific animal cells do not contain lysosomes.

2. **Identifying the Options**: The options provided are:
- Erythrocytes (Red Blood Cells)
- Plasma Cells
- Knob Cells
- Muscle Cells

3. **Analyzing Erythrocytes**:
- Erythrocytes, or red blood cells (RBCs), are known to lack several organelles, including lysosomes, mitochondria, and a nucleus.
- This absence of organelles allows erythrocytes to maximize space for hemoglobin, which is essential for oxygen transport.

4. **Function of Erythrocytes**:
- The primary function of erythrocytes is to carry oxygen throughout the body. The unique biconcave shape of these cells enhances their ability to diffuse oxygen efficiently.

5. **Conclusion for Erythrocytes**:
- Since erythrocytes are confirmed to lack lysosomes, they are the correct answer to the question.

6. **Analyzing Other Options**:
- Plasma cells, knob cells, and muscle cells typically contain lysosomes, which are involved in the breakdown of waste materials and cellular debris.

7. **Final Answer**:
- The correct answer is **Erythrocytes** (Red Blood Cells), as they are the animal cells that do not contain lysosomes.