The highest number of mitochondria are in

Options

A. parenchyma cells
B. sieve tubes
C. meristematic tissues
D. collenchyma

Answer

To determine which cells have the highest number of mitochondria, we need to analyze the options given:

1. **Parenchyma Cells**:
- These are thin-walled living cells that contain a prominent nucleus and protoplasm.
- Their main functions include storage and secretion.
- **Conclusion**: Parenchyma cells do not have the highest number of mitochondria.

2. **Sieve Tubes**:
- Sieve tubes are elongated living cells found in the phloem.
- Their primary function is to transport carbohydrates throughout the plant.
- **Conclusion**: Sieve tubes are not known for having a high number of mitochondria.

3. **Meristematic Tissues**:
- Meristematic tissues are regions of actively dividing cells.
- These cells require a lot of energy for growth and division, which is provided by mitochondria.
- **Conclusion**: Meristematic tissues are known to have the highest number of mitochondria among the options provided.

4. **Collenchyma**:
- Collenchyma cells have thickened cell walls and provide support to growing parts of the plant.
- They are not characterized by a high number of mitochondria.
- **Conclusion**: Collenchyma cells do not have the highest number of mitochondria.

**Final Answer**: The highest number of mitochondria are found in **Meristematic Tissues**.

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