1. Size & Shape:
* Immature cells: Smaller, relatively uniform in shape, with a large central vacuole.
* Mature cells: Larger and more specialized in shape based on their function. Vacuoles are much larger, often occupying most of the cell volume.
2. Cell Wall:
* Immature cells: Have a thin, primary cell wall made of cellulose.
* Mature cells: May have a thicker secondary cell wall made of lignin, hemicellulose, and other substances, providing strength and rigidity.
3. Organelles:
* Immature cells: Possess most organelles, including ribosomes, endoplasmic reticulum, Golgi apparatus, mitochondria, and chloroplasts (in photosynthetic cells).
* Mature cells: May have specialized organelles depending on their function. For example, mature xylem cells lack a nucleus and cytoplasm, while mature sieve tube cells have specialized pores for sugar transport.
4. Vacuole:
* Immature cells: Have a small, central vacuole filled with cell sap.
* Mature cells: Vacuoles enlarge significantly, often pushing the cytoplasm and nucleus against the cell wall. They store water, nutrients, and waste products.
5. Metabolic Activity:
* Immature cells: Are actively growing and dividing.
* Mature cells: Have a lower rate of metabolic activity and are specialized for specific functions.
6. Function:
* Immature cells: Are responsible for growth and development.
* Mature cells: Perform specialized functions such as photosynthesis, water transport, nutrient storage, and structural support.
7. Differentiation:
* Immature cells: Are undifferentiated and have the potential to develop into various cell types.
* Mature cells: Have undergone differentiation and have a specific function.
In summary: Mature plant cells are larger, more specialized, and have thicker cell walls, larger vacuoles, and reduced metabolic activity compared to immature cells. They have undergone differentiation and perform specific functions within the plant.
