A tissue having thickenings of pectin and hemicellulose in the cell wall of its cell

Options

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

Answer

To solve the question regarding a tissue having thickenings of pectin and hemicellulose in the cell wall of its cells, we will analyze the given options step by step.

### Step-by-Step Solution:

1. **Understand the Options**: The options provided are:
- A) Parenchyma
- B) Collenchyma
- C) Sclerenchyma
- D) Prosenchyma

2. **Analyze Sclerenchyma**:
- Sclerenchyma is characterized by having a lignified cell wall.
- It is primarily involved in providing structural support.
- **Conclusion**: Sclerenchyma does not fit the description as it does not contain pectin and hemicellulose.

3. **Analyze Parenchyma**:
- Parenchyma cells have a primary cell wall made up of cellulose.
- They do not specifically contain thickenings of pectin and hemicellulose.
- **Conclusion**: Parenchyma is not the correct option.

4. **Analyze Prosenchyma**:
- Prosenchyma is a specialized type of parenchyma, but it also does not have a cell wall that is rich in pectin and hemicellulose.
- **Conclusion**: Prosenchyma is also not the correct option.

5. **Analyze Collenchyma**:
- Collenchyma is characterized by having cell walls that are rich in pectin and hemicellulose.
- The thickenings in collenchyma provide flexibility and support to the plant.
- **Conclusion**: Collenchyma fits the description given in the question.

6. **Final Answer**: Based on the analysis, the tissue having thickenings of pectin and hemicellulose in the cell wall of its cells is **Collenchyma (Option B)**.