Absorption of Water and Ascent of Sap Absorption of water is the process by which a plant takes in water from the soil. This process is essential for the...
Absorption of water is the process by which a plant takes in water from the soil. This process is essential for the plant's survival, as it allows the plant to transport nutrients, hormones, and oxygen throughout the body.
The process of water absorption is divided into two main steps:
Root absorption: Water is absorbed by specialized structures called root hairs found in the root cortex. These hair-like structures have an enormous surface area, which allows them to absorb water quickly.
Xylem vessels: Once water enters the root hairs, it moves up through the xylem vessels to the stem and leaves.
**The xylem vessels are long, hollow cells that are connected to each other by tiny pores called xylem pits. Water moves up the xylem vessels through the cohesion and adhesion forces between the water molecules.
The ascent of sap is the process by which water moves up the xylem vessels from the roots to the leaves. The water is pulled up by the force of cohesion and adhesion between the water molecules. The water then evaporates from the surface of the leaves, creating a suction that pulls more water up.
The absorption of water and the ascent of sap are essential for the plant's survival. They allow the plant to transport nutrients, hormones, and oxygen throughout the body, which is essential for plant growth and development