Collenchyma differs from parenchyma in having
(a) Living protoplasm
(b) Cellulose walls
(c) Vaculoes
(d) Pectin and cellulose deposites at corners

Options

A. Living protoplasm
B. Cellulose walls
C. Vaculoes
D. Pectin anc cellulose deposites at corners

Answer

To solve the question regarding the differences between collenchyma and parenchyma, let's analyze each option provided:

1. **Understanding the Tissues**:
- **Parenchyma**: This is a type of simple tissue characterized by thin-walled cells that primarily have a primary cell wall. They are living cells and often involved in storage, photosynthesis, and tissue repair.
- **Collenchyma**: This is also a type of simple tissue but is characterized by cells that have irregularly thickened cell walls. These thickened areas are due to the deposition of pectin, hemicellulose, and cellulose.

2. **Analyzing the Options**:
- **(a) Living protoplasm**: Both collenchyma and parenchyma contain living protoplasm. This option does not differentiate them.
- **(b) Cellulose walls**: Both types of tissues have cellulose in their cell walls, so this option also does not differentiate them.
- **(c) Vacuoles**: Both collenchyma and parenchyma cells can have vacuoles, thus this option is not a distinguishing feature.
- **(d) Pectin and cellulose deposits at corners**: This option highlights the unique characteristic of collenchyma, where the cell walls are thickened due to the deposition of pectin and cellulose, particularly at the corners of the cells.

3. **Conclusion**:
- The major distinguishing feature of collenchyma compared to parenchyma is the presence of pectin and cellulose deposits at the corners of the cells, which leads to their irregular thickening. Therefore, the correct answer is **(d) pectin and cellulose deposits at corners**.