The process by which plants absorb water through their roots is called osmosis. Osmosis is a type of passive transport where water molecules move from an area of lower solute concentration (in the soil) to an area of higher solute concentration (inside the plant's roots) through semi-permeable membranes. This process is vital for plant health, as it helps maintain turgor pressure, which is essential for structural stability. Additionally, water is crucial for various physiological processes, including photosynthesis and nutrient transport. Efficient water absorption ensures that plants remain hydrated and can thrive in their environment, highlighting the importance of soil moisture and root health in plant growth.