The process by which plants absorb water through their roots is known as osmosis. In osmosis, water molecules move from an area of higher concentration (the soil) to an area of lower concentration (the plant's root cells) through a semipermeable membrane. This enables plants to take up the necessary water for growth, photosynthesis, and nutrient transportation. The absorbed water travels through the xylem, a type of vascular tissue, and is distributed throughout the plant. This process is vital for maintaining plant turgor pressure and overall health, making it essential for successful plant growth and development.