Find out incorrect sentence

Options

A. Parenchymatous tissues have intercellular spaces.
B. Collenchymatous tissues are irregularly thickened at corners.
C. Apical and intercalary meristems are permanent tissues.
D. Meristematic tissues, in its early stage, lack vacuoles.

Explanation

To find the incorrect sentence among the given options regarding plant tissues, we will analyze each statement step by step.

### Step-by-Step Solution:

1. **Understanding Tissues**:
- Tissues are groups of cells that are similar in origin and function. In plants, there are two main types of tissues: meristematic and permanent tissues.

2. **Meristematic Tissues**:
- Meristematic tissues consist of cells that are actively dividing. They are responsible for the growth and development of the plant.

3. **Permanent Tissues**:
- Permanent tissues are composed of cells that have matured and undergone differentiation. These cells do not divide anymore and perform specific functions.

4. **Analyzing the Statements**:
- **Statement 1**: "Parenchyma tissues have intercellular spaces."
- This statement is correct. Parenchyma cells can have intercellular spaces depending on their arrangement.

- **Statement 2**: "Collenchyma tissue is irregularly thickened at corners."
- This statement is also correct. Collenchyma cells have thickened corners due to the deposition of cellulose and pectin.

- **Statement 3**: "Apical and intercalary meristems are permanent tissues."
- This statement is incorrect. Apical and intercalary meristems are types of meristematic tissues, which are actively dividing and not permanent.

- **Statement 4**: "Meristematic tissues lack vacuoles at an early stage."
- This statement is correct. Meristematic cells do not have well-defined vacuoles as they are still in the process of differentiation.

5. **Conclusion**:
- The incorrect statement is **Statement 3**, which claims that apical and intercalary meristems are permanent tissues. In reality, they are meristematic tissues that are still dividing.

### Final Answer:
The incorrect sentence is: **"Apical and intercalary meristems are permanent tissues."**