A Plant Cell Placed in 100 Water

When a plant cell is placed in 100 water, a number of changes occur within the cell. The process is known as osmosis, which is the movement of water molecules from a region of higher concentration to a region of lower concentration, across a semi-permeable membrane. In this case, the membrane that surrounds the plant cell is semi-permeable, meaning that it allows certain molecules such as water to pass through, while blocking others.

Water Enters the Cell

As water outside the plant cell has a higher concentration of water molecules compared to those inside the cell, water immediately begins to move into the cell through osmosis. The cell membrane, being semi-permeable, allows water molecules to pass through, but prevents other molecules from entering, thereby increasing the concentration of water within the cell.

Cell Swelling

Due to the influx of water into the cell, it begins to swell. The cell wall, which is made up of cellulose, prevents the cell from bursting. Instead, the cell becomes turgid, and it exerts pressure on the cell wall. This turgidity ensures that the plant remains upright and that leaves can orient themselves toward the sun for photosynthesis.

Cellular Processes

The increase of water within the cell also triggers the activation of certain cellular processes. For example, the increase in volume causes the chloroplasts within the cell to move toward the edges of the cell since the cell's central vacuole is now filled with water. This movement helps to increase the surface area of the chloroplasts, which is important for photosynthesis. As a result, the plant can produce more energy through photosynthesis.

Plant Growth

The increase in water concentration within the cell also supports plant growth. The turgidity caused by the influx of water allows the plants to stand upright and therefore helps the stem grow. Additionally, the increased availability of water encourages the plant to produce more food, which supports the growth of flowers, fruits, and seeds.

Conclusion

When a plant cell is placed in 100 water, it undergoes a number of changes. The influx of water triggers cellular processes and increases the plant's energy production, supporting plant growth. The turgidity caused by the influx of water allows the plants to stand upright, which is important for their survival. Overall, the movement of water into plant cells is crucial for plant growth and health.