Totipotent cell refers to

Options

A. An undifferentiated cells capable of developing into complete embryo
B. An undifferentiated cell capable of developing into an organ
C. An undifferentiated cell capable of developing into a system or entire plant
D. Cells which lack the cell wall

Answer

### Step-by-Step Solution:

1. **Understanding Totipotency**:
- Totipotency refers to the ability of a single cell to develop into a complete organism. This means that a totipotent cell can give rise to all the different cell types in an organism, including both the embryonic and extra-embryonic tissues.

2. **Identifying Totipotent Cells**:
- The cells that exhibit totipotency are typically the zygote and the early embryonic cells. These cells have the potential to develop into a complete individual.

3. **Analyzing the Options**:
- **Option 1**: "An undifferentiated cell that is capable of developing into a complete embryo."
- This statement is partially correct but incomplete, as it does not mention that it can develop into a complete individual.
- **Option 2**: "An undifferentiated cell that is capable of developing into an organ."
- This statement is incorrect because totipotent cells can develop into an entire organism, not just an organ.
- **Option 3**: "An undifferentiated cell capable of developing into a system or the entire plant."
- This statement is correct as it encompasses the ability of totipotent cells to develop into a complete organism.
- **Option 4**: "Cells which lack a cell wall."
- This statement is incorrect as it does not accurately describe totipotent cells.

4. **Conclusion**:
- The correct answer is **Option 3**: "An undifferentiated cell capable of developing into a system or the entire plant."