Entire vascular cambium is formed due to dedifferentiation during the secondary growth in

Options

A. Dicot stem
B. Monocot stem
C. Dicot root
D. Monocot root

Answer

To solve the question regarding the formation of the entire vascular cambium due to dedifferentiation during secondary growth, we will analyze each option provided.

### Step-by-Step Solution:

1. **Understanding Vascular Cambium**:
- Vascular cambium is a type of lateral meristem responsible for secondary growth in plants, leading to an increase in the thickness of stems and roots.

2. **Analyzing the Options**:
- The options provided are:
- A) Dicot stem
- B) Monocot stem
- C) Dicotruids
- D) Monocotrudes

3. **Option A: Dicot Stem**:
- Dicot stems have vascular cambium that is partially primary and partially secondary in origin. This means that the vascular cambium in dicots does not arise entirely from dedifferentiation. Therefore, this option cannot be the answer.

4. **Option B: Monocot Stem**:
- Monocots generally do not exhibit secondary growth. They lack a vascular cambium, which means there is no formation of secondary tissues. Hence, this option is also not correct.

5. **Option C: Dicotruids**:
- Dicotruids are characterized by complete secondary growth. The vascular cambium in dicotruids originates entirely from dedifferentiation of parenchyma cells, leading to the formation of interfascicular cambium. This option fits the criteria of the question.

6. **Option D: Monocotrudes**:
- Similar to monocots, monocotrudes do not undergo secondary growth. They also lack a vascular cambium. Therefore, this option cannot be the answer.

7. **Conclusion**:
- After analyzing all the options, the correct answer is **C) Dicotruids**, as they exhibit complete secondary growth and the entire vascular cambium is formed due to dedifferentiation.

### Final Answer:
The entire vascular cambium is formed due to dedifferentiation during the secondary growth in **C) Dicotruids**.

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