Question

What is ascent of sap? Name the forces responsible for ascent of sap.

Answer 1

Ascent of sap:

1. Water absorption in plants occurs through their roots and water loss from the leaves occurs through transpiration.
2. As a result, water travels against gravity from the plant roots to the top.
3. This upward passage of water and minerals in the xylem tissue from the roots to the aerial parts of the plants such as stems and leaves is known as the ascent of sap.

Forces responsible for ascent of sap:

Three forces are responsible for the ascent of sap:

1. Capillary force
2. Root pressure
3. Transpirational pull