Which of the following tissues from the main bulk of storage organ-

Options

A. Parenchyma
B. Collenchyma
C. Sclerenchyma
D. Aerenchyma

Answer

To determine which tissue forms the main bulk of storage organs, we can analyze the characteristics and functions of the given tissues: parenchyma, collenchyma, sclerenchyma, and achenchyma.

### Step-by-Step Solution:

1. **Identify the Tissues**: The four tissues mentioned are:
- Parenchyma
- Collenchyma
- Sclerenchyma
- Achenchyma

2. **Understand Parenchyma**:
- Parenchyma cells are living cells that have the ability to divide continuously.
- They contain large vacuoles which are essential for storage.
- These vacuoles store various substances such as ions, waste products, and water.

3. **Function of Parenchyma**:
- Parenchyma is the main component of ground tissues.
- It plays a crucial role in storage organs, making it the primary tissue for storage.

4. **Analyze Other Tissues**:
- **Collenchyma**:
- Has thick cell walls.
- Primarily provides mechanical support rather than storage.
- **Sclerenchyma**:
- Also has thick walls.
- Functions mainly in providing structural support.
- **Achenchyma**:
- Generally involved in gas exchange.

5. **Conclusion**:
- Based on the functions and characteristics of these tissues, parenchyma is the tissue that forms the main bulk of storage organs.

### Final Answer:
The tissue that forms the main bulk of storage organs is **Parenchyma**.