If parenchyman cells are green in colour, they are known as

Options

A. sclerenchyma
B. chlorenchyma
C. aerenchyma
D. collenchyma

Answer

To answer the question "If parenchyma cells are green in color, they are known as," we will analyze the options provided and determine the correct answer step by step.

### Step-by-Step Solution:

1. **Understanding Parenchyma Cells**:
- Parenchyma cells are fundamental tissue in plants, characterized by their thin cell walls and ability to perform various functions, including storage, photosynthesis, and tissue repair.

2. **Identifying Green Parenchyma**:
- When parenchyma cells contain chlorophyll, they appear green. This is crucial for their role in photosynthesis.

3. **Analyzing the Options**:
- **Option 1: Sclerenchyma**:
- Sclerenchyma cells are dead cells that provide structural support. They do not contain chlorophyll and are not green. Thus, this option is incorrect.
- **Option 2: Chlorenchyma**:
- The term "chlorenchyma" refers to parenchyma cells that contain chlorophyll, making them green. These cells are primarily involved in photosynthesis. Therefore, this option is correct.
- **Option 3: Aerenchyma**:
- Aerenchyma is a type of parenchyma with large air spaces, facilitating gas exchange. It does not imply the presence of chlorophyll, so this option is incorrect.
- **Option 4: Cholenchyma**:
- Cholenchyma cells have thickened cell walls and provide support, but they do not necessarily contain chlorophyll, making this option incorrect as well.

4. **Conclusion**:
- Based on the analysis, the correct answer is **Chlorenchyma** (Option 2), as it specifically refers to green parenchyma cells that are involved in photosynthesis.

### Final Answer:
If parenchyma cells are green in color, they are known as **Chlorenchyma**.

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