Which of the following statement is true for the simple permanent tissue consist of thin cellulosic cell wall ?

Options

A. Closely packed cells only without intercellular space
B. Isodiametric cells which form main component within organs
C. Providing mechanical support to young part
D. Only performs the function of secretion

Answer

To determine which statement is true for simple permanent tissue that consists of a thin cellulosic cell wall, we will analyze each option based on our knowledge of plant tissues.

### Step-by-Step Solution:

1. **Identify the Types of Simple Permanent Tissues**:
- The three main types of simple permanent tissues are parenchyma, collenchyma, and sclerenchyma.
- Parenchyma is characterized by thin cell walls made of cellulose.

2. **Analyze Each Statement**:
- **Statement 1**: "Closely packed cells only without intercellular space."
- This statement is incorrect for parenchyma. Parenchyma cells are not always closely packed and often have intercellular spaces.

- **Statement 2**: "Isodiametric cells which form the main component within organs."
- This statement is correct. Parenchyma cells are typically isodiametric (having equal diameters) and are indeed the main component of various plant organs.

- **Statement 3**: "Providing mechanical support to the young plant."
- This statement is incorrect for parenchyma. While parenchyma can provide some support, it is primarily the collenchyma and sclerenchyma that provide mechanical support.

- **Statement 4**: "Only perform the function of secretion."
- This statement is also incorrect. Parenchyma is involved in various functions, including storage and photosynthesis, not just secretion.

3. **Conclusion**:
- Based on the analysis, the only true statement regarding simple permanent tissue with thin cellulosic walls (specifically parenchyma) is **Statement 2**: "Isodiametric cells which form the main component within organs."

### Final Answer:
The correct answer is **Statement 2**: "Isodiametric cells which form the main component within organs."