Find out incorrect combination w.r.t simple permanent tissue :

Options

A. `{:("Tissue Feature","Cell wall","Function"),("The tissue that forms main component within organs","Cellulosic","Storage"):}`
B. `{:("Tissue Feature","Cell wall","Function"),("Found below the epidermis in dicotyledonous plants ","Cellulose, pectin and hemicellulose","Mechanical support"):}`
C. `{:("Tissue Feature","Cell wall","Function"),("Thick walled, dead elongated and pointed cells","Lignified cell wall","Mechanical support"):}`
D. `{:("Tissue Feature","Cell wall","Function"),("Spherical, oval or cylindrical dead cells","Thick cellulosic cell wall","Flexibility"):}`

Answer

To find the incorrect combination with respect to simple permanent tissue, we need to analyze the characteristics of the three types of simple permanent tissues: parenchyma, collenchyma, and sclerenchyma.

### Step-by-Step Solution:

1. **Identify the Types of Simple Permanent Tissues**:
- There are three main types of simple permanent tissues in plants:
- Parenchyma
- Collenchyma
- Sclerenchyma

2. **Characteristics of Parenchyma**:
- **Structure**: Parenchyma cells are typically isodiametric (similar diameter) and can be oval, round, or spherical.
- **Cell Wall Composition**: The cell walls are primarily made of cellulose and are thin.
- **Function**: They are involved in storage, photosynthesis, and providing support to the plant.

3. **Characteristics of Collenchyma**:
- **Location**: Collenchyma is found just below the epidermis in dicot plants.
- **Structure**: Cells have thickened walls, particularly at the corners.
- **Cell Wall Composition**: Made up of cellulose, pectin, and hemicellulose.
- **Function**: Provides mechanical support while allowing flexibility.

4. **Characteristics of Sclerenchyma**:
- **Structure**: Sclerenchyma cells are dead at maturity, have thick, lignified walls, and are often elongated and pointed.
- **Function**: Provides mechanical support to the plant.

5. **Analyze the Given Options**:
- **Option 1**: Describes a tissue that forms the main component within an organ with a cell wall that is cellulosic and mentions storage as a function. This is correct for parenchyma.
- **Option 2**: States that collenchyma is found below the epidermis in dicot plants with a cell wall made of cellulose, pectin, and hemicellulose, providing mechanical support. This is correct.
- **Option 3**: Describes sclerenchyma as having thick walls, being dead, elongated, and pointed with a lignified cell wall providing mechanical support. This is correct.
- **Option 4**: Describes a tissue as spherical, oval, or cylindrical dead cells with a thick cellulosic cell wall and flexibility. This is incorrect because while sclerenchyma cells are dead and have thick walls, they are not cellulosic but lignified, and parenchyma and collenchyma cells are living and not typically described as dead.

6. **Conclusion**:
- The incorrect combination with respect to simple permanent tissue is **Option 4**.