A meristem in which cells divide in all planes is known as

Options

A. Plate merisem
B. Rib meristem
C. Angle meristem
D. Mass meristem

Answer

To answer the question "A meristem in which cells divide in all planes is known as," we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Concept of Meristem**:
- Meristems are tissues in plants that consist of undifferentiated cells capable of division and can develop into various types of tissues.

2. **Identify Types of Meristem**:
- There are different types of meristems based on the pattern of cell division:
- **Mass Meristem**: Cells divide in all planes.
- **Plate Meristem**: Cells divide in two planes.
- **Rib Meristem**: Cells divide in one plane.
- **Angle Meristem**: Mounds of meristematic tissue located at branching points.

3. **Analyze the Options**:
- **Plate Meristem**: Incorrect, as it divides in two planes.
- **Rib Meristem**: Incorrect, as it divides in one plane.
- **Angle Meristem**: Incorrect, as it consists of mounds of tissue.
- **Mass Meristem**: Correct, as it divides in all planes.

4. **Conclusion**:
- The correct answer is **Mass Meristem**.

### Final Answer:
A meristem in which cells divide in all planes is known as **Mass Meristem**.

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