Significance of mitosis is

Options

A. Growth of multicellular organisms
B. Maintains nucleo-cytoplasmc ratio
C. Cell repair
D. All

Answer

### Step-by-Step Solution for the Significance of Mitosis

1. **Definition of Mitosis**: Mitosis is a type of cell division that results in two daughter cells, each genetically identical to the parent cell. It is essential for growth and repair in multicellular organisms.

**Hint**: Remember that mitosis is the process where one cell divides into two identical cells.

2. **Growth of Multicellular Organisms**: Mitosis plays a crucial role in the growth of multicellular organisms. As organisms grow, they need more cells, and mitosis allows for the increase in cell number.

**Hint**: Think about how your body grows from a single cell (the fertilized egg) to a complex organism with trillions of cells.

3. **Maintenance of Nucleus-Cytoplasmic Ratio**: Mitosis helps maintain the proper ratio of nucleus to cytoplasm. As cells grow, the volume of the cytoplasm increases, and mitosis ensures that the nucleus can adequately control the cell's activities by dividing the cell before it becomes too large.

**Hint**: Consider why a cell needs to divide before it gets too big – it needs to keep its control center (the nucleus) effective.

4. **Cell Repair**: Mitosis is essential for repairing damaged tissues. When cells are injured (like in a cut), mitosis allows for the production of new cells to replace the damaged ones.

**Hint**: Think about how your body heals after a cut – new skin cells are formed through mitosis.

5. **Equal Distribution of Chromosomes**: During mitosis, chromosomes are duplicated and evenly distributed to the daughter cells. This ensures that each daughter cell receives the correct number of chromosomes, maintaining genetic stability.

**Hint**: Remember that each daughter cell should have the same genetic information as the parent cell.

### Summary of Significance of Mitosis:
- **Growth of multicellular organisms**: Increases cell number.
- **Maintenance of nucleus-cytoplasmic ratio**: Ensures proper cell function.
- **Cell repair**: Replaces damaged or dead cells.
- **Equal distribution of chromosomes**: Maintains genetic stability.