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 can analyze the types of simple permanent tissues and their characteristics.

### Step-by-Step Solution:

1. **Identify the Types of Simple Permanent Tissues**:
- The three main types of simple permanent tissues in plants are parenchyma, collenchyma, and sclerenchyma.

2. **Examine Parenchyma**:
- Parenchyma is characterized by thin cell walls made of cellulose.
- The cells are generally isodiametric (having equal dimensions) and can be oval, round, spherical, polygonal, or elongated.
- Parenchyma cells are closely packed but do have some intercellular spaces.

3. **Examine Collenchyma**:
- Collenchyma cells have unevenly thickened cell walls made of cellulose, hemicellulose, and pectin.
- They provide flexibility and support to young plant parts.

4. **Examine Sclerenchyma**:
- Sclerenchyma cells have thick, lignified walls and are typically dead at maturity.
- They provide structural support and strength to the plant.

5. **Evaluate the Statements**:
- **Statement 1**: "Closely packed cells without any intracellular space" - This is false because parenchyma does have some intercellular spaces.
- **Statement 2**: "Isodiametric cells which form main components within organs" - This is true as parenchyma cells are isodiametric and form the main component of plant organs.
- **Statement 3**: "Provide mechanical support to young parts" - This is false as parenchyma primarily functions in storage, photosynthesis, and secretion, not mechanical support.
- **Statement 4**: "Only perform the function of secretion" - This is false because parenchyma also plays roles in storage and photosynthesis.

6. **Conclusion**:
- The correct statement regarding simple permanent tissue with a thin cellulosic wall is **Statement 2**: "Isodiametric cells which form main components within organs."