pick up the wrong differences between dicot and monocot root
`{:("Character","Dicot Root","Monocot Root"),("Activity of pericycle",-"Lateral root production",-"Secondary growth and cambium"),("Vascular bundle",-"Diarch to tetrarch",-"Polyarch"),("Cambium",-"Lateral, development",-"Absent"),("Pith",-"Well developed",-"Poorly developed"):}`

Options

A. b,d
B. a,c
C. a,d
D. a,b

Answer

To solve the question about the differences between dicot and monocot roots, we will analyze each characteristic provided in the table and determine which statements are incorrect.

### Step-by-Step Solution:

1. **Activity of Pericycle**:
- **Dicot Root**: The pericycle is involved in lateral root production.
- **Monocot Root**: It is stated that the pericycle is involved in secondary growth and cambium.
- **Analysis**: Monocots do not have secondary growth due to the absence of vascular cambium. Therefore, this statement is incorrect.

2. **Vascular Bundle**:
- **Dicot Root**: Vascular bundles can be diarch to tetrarch (2 to 4 bundles).
- **Monocot Root**: It states that monocots have polyarch bundles (more than 6).
- **Analysis**: This statement is correct as monocots typically have many vascular bundles.

3. **Cambium**:
- **Dicot Root**: The cambium is present and allows for lateral development and secondary growth.
- **Monocot Root**: It is stated that cambium is absent.
- **Analysis**: This statement is correct since monocots do not have cambium and therefore do not undergo secondary growth.

4. **Pith**:
- **Dicot Root**: Pith is described as well developed.
- **Monocot Root**: It states that pith is poorly developed.
- **Analysis**: This statement is incorrect because in dicots, the pith is usually poorly developed, while in monocots, it is well developed.

### Summary of Incorrect Statements:
- The incorrect differences are:
- **Activity of Pericycle** (Dicot: lateral root production, Monocot: secondary growth and cambium)
- **Pith** (Dicot: well developed, Monocot: poorly developed)

Thus, the wrong differences between dicot and monocot roots are found in the first and fourth characteristics.

### Final Answer:
The wrong differences are:
- Activity of Pericycle
- Pith