Meristematic cells are

Options

A. thin walled, isodiametric, large nucleate and less protoplasmic.
B. thin walled, isodiametric, large nucleate and dense protoplasmic
C. thick walled, isodiametric, non-nucleate and dense protoplasmic
D. thick walled, columnar, large nucleate and dense protoplasmic

Answer

### Step-by-Step Solution:

1. **Understanding Meristematic Cells**:
- Meristematic cells are specialized cells in plants that have the ability to divide and give rise to various types of cells and tissues. They are crucial for growth and development in plants.

2. **Characteristics of Meristematic Cells**:
- These cells are typically small and densely packed.
- They have thin cell walls, which allows for easier division.
- The nucleus in meristematic cells is large relative to the cell size.
- The shape of these cells is often isodiametric (roughly spherical or polyhedral).
- They contain less protoplasm compared to other cell types.
- Meristematic cells do not have intercellular spaces.

3. **Evaluating the Options**:
- **Option 1**: Thin wall, isodiametric, large nucleate, and less protoplasmic.
- **Option 2**: Thin wall, isodiametric, large nucleate, and dense protoplasmic.
- **Option 3**: Thick wall, isodiametric, non-nucleate, and dense protoplasmic.
- **Option 4**: Thick wall, columnar, large nucleate, and dense protoplasmic.

4. **Identifying the Correct Option**:
- Based on the characteristics outlined, the first option accurately describes meristematic cells: they have thin walls, are isodiametric, have large nuclei, and contain less protoplasm. The other options either describe incorrect wall thickness or protoplasm density.

5. **Conclusion**:
- The correct answer is **Option 1**: Meristematic cells are thin-walled, isodiametric, large nucleate, and less protoplasmic.