Parenchymatous cells are characterized by :

Options

A. intercellular spaces
B. lignified walls
C. thickening at the corners
D. uniform thickening

Explanation

### Step-by-Step Solution:

1. **Understanding Parenchyma Cells**:
- Parenchyma cells are a type of simple permanent tissue found in plants. They are characterized by their shape, which can be oval, spherical, or hexagonal.

2. **Cell Wall Composition**:
- The cell walls of parenchyma cells are primarily made up of cellulose. This is a key characteristic that differentiates them from other types of plant cells.

3. **Arrangement and Structure**:
- Parenchyma cells are typically arranged in layers and are known for having intercellular spaces. These spaces are important for gas exchange and storage functions.

4. **Presence of Chloroplasts**:
- In some parenchyma cells, particularly those in green tissues, chloroplasts are present, allowing for photosynthesis.

5. **Evaluating the Options**:
- **Option 1: Intracellular spaces** - This is correct as parenchyma cells do have intercellular spaces.
- **Option 2: Lignified walls** - This is incorrect; parenchyma cells do not have lignified walls.
- **Option 3: Thickening at the corners** - This is also incorrect; such thickening is not a characteristic of parenchyma cells.
- **Option 4: Uniform thickenings** - This is incorrect as well; parenchyma cells do not exhibit uniform thickening.

6. **Conclusion**:
- The correct characterization of parenchyma cells is that they have **intracellular spaces**.

### Final Answer:
Parenchymatous cells are characterized by **intracellular spaces**.

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