The cell walls of parenchyma are made up of _________ .

Explanation

**Step-by-Step Solution:**

1. **Understanding Parenchyma**: Parenchyma is a type of plant tissue that is classified as permanent tissue. It plays various roles in the plant, including storage, photosynthesis, and tissue repair.

2. **Identifying Cell Wall Composition**: The cell wall is a crucial component of plant cells, providing structure and support. In plants, the primary component of the cell wall is cellulose.

3. **Specifics of Parenchyma Cell Walls**: In the case of parenchyma cells, the cell walls are primarily composed of cellulose. This is consistent with the general composition of cell walls in many plant tissues.

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