To form a tracheary element from the primary meristem the cells would lose their protoplasm is an example of

Options

A. redifferentiation
B. dedifferentiation
C. differentiation
D. degeneration

Answer

To solve the question regarding the formation of tracheary elements from the primary meristem and the loss of protoplasm, we can break down the process into several steps:

### Step-by-Step Solution:

1. **Understanding the Context**:
- The question refers to the transformation of cells from the primary meristem into tracheary elements, which are specialized cells in vascular plants responsible for water conduction.

2. **Identifying the Process**:
- The transformation of cells involves changes in their structure and function. Specifically, tracheary elements are formed through a process where cells mature and undergo significant changes.

3. **Defining Key Terms**:
- **Differentiation**: This is the process where unspecialized cells (like those in the meristem) mature into specialized cells (like tracheary elements). During differentiation, cells lose their protoplasm and develop specific functions.
- **De-differentiation**: This refers to the process where specialized cells revert to a more meristematic state, regaining the ability to divide.
- **Re-differentiation**: This is when de-differentiated cells mature again into specialized cells.
- **Degeneration**: This involves the breakdown or loss of structure and function of cells, which is not what is happening in this case.

4. **Analyzing the Options**:
- **Option 1: Re-differentiation** - Not applicable since we are not discussing cells that have reverted to a less specialized state.
- **Option 2: De-differentiation** - Incorrect, as this involves regaining the ability to divide rather than maturing.
- **Option 3: Differentiation** - This is the correct choice, as it describes the maturation of cells into specialized tracheary elements, including the loss of protoplasm.
- **Option 4: Degeneration** - This does not apply as it implies a breakdown rather than a maturation process.

5. **Conclusion**:
- The correct answer is **Option 3: Differentiation**, as it accurately describes the process where cells from the primary meristem mature into tracheary elements by losing their protoplasm.