Which of the following points is shown by cell at the root or shoot apex -

Options

A. Rich in protoplasm, possesses large conspicuous triploid nucleus
B. Cell wall is cellulosic, primary in nature and with abundant plasniodesmata
C. Rich in protoplasm with large conspicuous nucleus
D. B and C

Answer

To answer the question regarding the characteristics of cells at the root or shoot apex, we can break down the features systematically.

### Step-by-Step Solution:

1. **Understanding the Root and Shoot Apex**:
- The root and shoot apex are regions of active growth in plants, known as meristems. These areas contain undifferentiated cells that can divide and differentiate into various types of plant tissues.

2. **Characteristics of Cells at the Apex**:
- **Rich in Protoplasm**: Cells at the root and shoot apex are indeed rich in protoplasm. This is crucial because protoplasm contains the cell's organelles and is involved in metabolic activities.
- **Large Nucleus**: The cells at these apices typically have a large, prominent nucleus. This is often described as a "conspicuous" or "triploid" nucleus, indicating that it is large relative to the cell size and plays a significant role in cell division.

3. **Cell Wall Composition**:
- The primary cell wall of these cells is primarily composed of cellulose. This is important for maintaining the structure and integrity of the cell as it grows and divides.
- **Plasmodesmata**: These are microscopic channels that traverse the cell walls of plant cells and enable communication and transport between adjacent cells.

4. **Summary of Options**:
- Based on the features discussed, we can evaluate the options:
- **Option 1**: "Cell is rich in protoplasm" - True.
- **Option 2**: "Cell wall is cellulosic" - True.
- **Option 3**: "Rich in protoplasm with large conspicuous nucleus" - True.
- **Option 4**: This option is not provided in the transcript but would likely summarize the above points.

5. **Conclusion**:
- The correct characteristics of the cells at the root or shoot apex include being rich in protoplasm, having a large nucleus, and having a cell wall that is primarily cellulosic.

### Final Answer:
The cells at the root or shoot apex are characterized by being rich in protoplasm, having a large conspicuous nucleus, and having a cell wall that is cellulosic.

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