The following points highlight the top four theories of ascent of sap. The theories are: 1. Vital Force Theory 2. Root Pressure Theory 3. Theory of Capillarity 4. Cohesion Tension Theory. 1. Vital Force Theory: A common vital force theory about the ascent of sap was put forward by J.C. Bose (1923). It is called pulsation theory. The theory believes [...]
In this article we will discuss about the meaning and theories of ascent of sap. Meaning of Ascent of Sap: Plants lose enormous amounts of water by transpiration. Water is absorbed from the soil and is conducted upwards through roots and stems ultimately to reach the leaves. This becomes possible due to the presence of continuous conducting channels in the [...]
In this article we will discuss about:- 1. Meaning of Ascent of Sap 2. Rate and Amount of Ascent of Sap 3. Theories. Meaning of Ascent of Sap: The upward movement of water from the root to the top of the plant is called as ascent of sap. Plants absorb water through the roots and transpire through leaves. The water [...]