Double membrane is absent in

Options

A. Mitochondia
B. Chlorolpast
C. Nucleus
D. Lysosome

Answer

To solve the question "Double membrane is absent in," we will analyze each option provided and determine whether it contains a double membrane or not.

### Step-by-Step Solution:

1. **Understand the Question**: The question asks which of the given organelles does not have a double membrane.

2. **List the Options**: The options provided are:
- A) Mitochondria
- B) Chloroplasts
- C) Nucleus
- D) Lysosome

3. **Analyze Each Option**:
- **Option A: Mitochondria**
- Mitochondria are known as the powerhouse of the cell. They are surrounded by two membranes: an inner membrane and an outer membrane. Therefore, mitochondria have a double membrane.

- **Option B: Chloroplasts**
- Chloroplasts are involved in photosynthesis and are found in plant cells. Like mitochondria, chloroplasts also have two membranes: an inner membrane and an outer membrane. Thus, chloroplasts also have a double membrane.

- **Option C: Nucleus**
- The nucleus is the control center of the cell and contains the genetic material. It is surrounded by a nuclear envelope, which consists of two membranes: an inner nuclear membrane and an outer nuclear membrane. Hence, the nucleus also has a double membrane.

- **Option D: Lysosome**
- Lysosomes are organelles that contain digestive enzymes for breaking down waste materials and cellular debris. Unlike the previous options, lysosomes are surrounded by a single membrane, not a double membrane.

4. **Conclusion**: Since lysosomes are the only organelles listed that do not have a double membrane, the correct answer is **D) Lysosome**.

### Final Answer:
Double membrane is absent in **Lysosome**.

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