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

### Step-by-Step Text Solution:

1. **Understanding the Question**: The question asks for a type of tissue that has thickenings of pectin and hemicellulose in its cell wall.

2. **Identifying the Tissues**: In plants, there are various types of tissues, including parenchyma, collenchyma, sclerenchyma, and others. Each of these has distinct characteristics.

3. **Analyzing Collenchyma**: Collenchyma is a type of ground tissue that provides support to the plant. It is characterized by its cell walls that have thickenings. These thickenings are primarily composed of pectin and hemicellulose, which contribute to the flexibility and strength of the tissue.

4. **Comparing with Other Tissues**:
- **Parenchyma**: This tissue typically has thin cell walls and is involved in storage and photosynthesis.
- **Sclerenchyma**: This tissue has thick, lignified walls and is usually dead at maturity, providing rigid support.
- **Procynchyma**: This is not a standard term in plant anatomy; it may be a typographical error or confusion with other tissues.

5. **Conclusion**: Given that collenchyma is the only tissue that contains thickenings of pectin and hemicellulose in its cell walls, we can conclude that the answer to the question is collenchyma.

6. **Final Answer**: The tissue having thickenings of pectin and hemicellulose in the cell wall is **Collenchyma**.