The zone of atmosphere in which the ozone layer is present is called

Options

A. ionosphere
B. mesosphere
C. stratosphere
D. trophosphere

Answer

To answer the question, "The zone of atmosphere in which the ozone layer is present is called," we need to identify the correct atmospheric layer from the given options. Here’s a step-by-step breakdown of the solution:

### Step 1: Understand the Question
The question asks for the specific layer of the atmosphere where the ozone layer is located.

### Step 2: Review the Options
We have four options to consider:
1. Ionosphere
2. Mesosphere
3. Stratosphere
4. Troposphere

### Step 3: Analyze Each Option
- **Ionosphere**: This layer is where the Earth's atmosphere meets space. It is not where the ozone layer is located.

- **Mesosphere**: This layer is situated above the stratosphere and is characterized by decreasing temperatures with height. It is not the layer where the ozone is found.

- **Stratosphere**: This layer is specifically known for containing the ozone layer. It is located approximately 15 to 40 kilometers above the Earth's surface.

- **Troposphere**: This is the lowest layer of the atmosphere, lying below the stratosphere. It does not contain the ozone layer.

### Step 4: Identify the Correct Answer
From the analysis, the **stratosphere** is the layer of the atmosphere where the ozone layer is present.

### Final Answer
The zone of atmosphere in which the ozone layer is present is called the **Stratosphere**.

---