Which of the following statements is incorrect?

Options

A. The number of mitochondria in a cell do not correspond to the function of cell .
B. Mitochondria are common to both plant and animal cells .
C. Mitochondria and Chloroplast are semiautonomous organelle
D. Mitochondria divides by fission to increase its number

Answer

To determine which statement is incorrect among the given options, we will analyze each statement one by one.

### Step-by-Step Solution:

1. **Evaluate the First Statement:**
- Statement: "The number of mitochondria in a cell do not correspond to the function of the cell."
- Analysis: This statement is **incorrect**. The number of mitochondria in a cell does correspond to its function. For example, muscle cells and heart cells, which require more energy, contain a higher number of mitochondria compared to less active cells.

2. **Evaluate the Second Statement:**
- Statement: "Mitochondria are common to both plant and animal cells."
- Analysis: This statement is **correct**. Mitochondria are indeed present in both plant and animal cells, as they are essential for energy production (ATP synthesis) in both types of cells.

3. **Evaluate the Third Statement:**
- Statement: "Mitochondria and chloroplasts are semi-autonomous organelles."
- Analysis: This statement is **correct**. Both mitochondria and chloroplasts have their own DNA and can replicate independently within the cell, which makes them semi-autonomous organelles.

4. **Evaluate the Fourth Statement:**
- Statement: "Mitochondria divide by fission to increase their number."
- Analysis: This statement is **correct**. Mitochondria replicate by a process called fission, which allows them to increase their numbers within the cell.

### Conclusion:
Based on the analysis, the **incorrect statement** is the **first statement**: "The number of mitochondria in a cell do not correspond to the function of the cell."