Select the true statement

Options

A. All apical meristems are lateral
B. All lateral meristems are secondary
C. All secondary meristems are lateral
D. All intercalary meristems are secondary

Answer

To solve the question "Select the true statement" regarding meristems, we will analyze each of the four options provided:

1. **Understanding Meristems**:
- Meristems are regions of plant tissue that are responsible for growth. They can be classified into two main types based on their origin: primary meristems and secondary meristems.
- Primary meristems include epical meristems and intercalary meristems.
- Secondary meristems are typically lateral meristems.

2. **Analyzing Each Option**:
- **Option 1**: "All epical meristems are lateral."
- Epical meristems are located at the tips of roots and shoots and are responsible for primary growth. They are not lateral; hence this statement is **false**.

- **Option 2**: "All lateral meristems are secondary."
- While most lateral meristems are indeed secondary, not all lateral meristems must be secondary. Therefore, this statement is **false** as well.

- **Option 3**: "All secondary meristems are lateral."
- This statement is true because secondary meristems, such as the vascular cambium and cork cambium, are indeed lateral in position.

- **Option 4**: "All intercalary meristems are secondary."
- Intercalary meristems are found between mature tissues, typically at the base of leaves or internodes, and are classified as primary meristems. Thus, this statement is **false**.

3. **Conclusion**:
- After analyzing all options, the only true statement is **Option 3**: "All secondary meristems are lateral."