Select wrong statement regarding secondary phloem

Options

A. Arise due to activity of procambium
B. Occurs during secondary growth
C. No distinction between protophloem and metaphloem
D. Secondary permanent tissue

Answer

To determine the wrong statement regarding secondary phloem, we will analyze the characteristics of secondary phloem and evaluate each statement provided.

### Step-by-Step Solution:

1. **Understanding Secondary Phloem**:
- Secondary phloem is a type of permanent tissue that forms as a result of secondary growth in plants. It is produced by the vascular cambium, which is a lateral meristem.

2. **Characteristics of Secondary Phloem**:
- It is formed during secondary growth, which occurs in dicots and some gymnosperms.
- Secondary phloem consists of mature and permanent tissues that have specialized structures and functions.

3. **Evaluating the Statements**:
- **Statement 1**: "Secondary phloem is a secondary permanent tissue."
- This statement is correct as secondary phloem is indeed a permanent tissue formed during secondary growth.

- **Statement 2**: "Secondary phloem only occurs during secondary growth."
- This statement is also correct since secondary phloem is specifically formed as a result of secondary growth.

- **Statement 3**: "There is no distinction between proto-phloem and meta-phloem."
- This statement is correct as well; in secondary phloem, there is no distinction between proto-phloem and meta-phloem, which is a characteristic of primary phloem.

- **Statement 4**: "Secondary phloem arises because of the activity of the procambium."
- This statement is incorrect. Secondary phloem arises from the activity of the vascular cambium, which itself is derived from procambium. Therefore, it is misleading to say that secondary phloem arises directly from procambium activity.

4. **Conclusion**:
- The wrong statement regarding secondary phloem is: "It arises because of the activity of the procambium."