Identify the statements as true (T) or false (F) w.r.t secondary growth in root and choose the correct option.
I. Vascular cambium is partially secondary in origin.
II. Vascular cambium is formed as continuous and complete but wavy ring.
III. Cork cambium arises from cortical cells.

Options

A. `{:(I,II,III),(T,F,F):}`
B. `{:(I,II,III),(F,T,T):}`
C. `{:(I,II,III),(T,T,F):}`
D. `{:(I,II,III),(F,T,F):}`

Answer

To solve the question regarding the statements about secondary growth in roots, we will analyze each statement one by one and determine whether they are true (T) or false (F).

### Step-by-Step Solution:

1. **Statement I: Vascular cambium is partially secondary in origin.**
- The vascular cambium in dicot roots is formed entirely from the pericycle, which is a secondary tissue. Therefore, this statement is **False (F)**.

2. **Statement II: Vascular cambium is formed as a continuous and complete but wavy ring.**
- The vascular cambium does indeed form a continuous and complete ring, although it may appear wavy initially. Over time, it becomes more circular. Hence, this statement is **True (T)**.

3. **Statement III: Cork cambium arises from cortical cells.**
- The cork cambium (also known as phellogen) is formed from the dedifferentiation of parenchyma cells, but it does not arise from the cortical cells specifically. Therefore, this statement is **False (F)**.

### Summary of Statements:
- Statement I: False (F)
- Statement II: True (T)
- Statement III: False (F)

### Final Answer:
The correct option based on the analysis is that the first statement is false, the second statement is true, and the third statement is false.