Question

Ascent of sap

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Answer 1

Answer:

Ascent of sap refers to the upward movement of water from the roots to all the other parts of the plant. The most accepted theory for ascent of sap in higher plants is Transpirational pull theory. During transpiration, pressure in the internal roots develop known as root pressure. This root pressure helps in ascent of sap.

Explanation:

Factors responsible for ascent of xylem sap in plants : Transpiration driven ascent of xylem sap is dependent chiefly on the physical properties of water that are following: (a) Cohesion : The mutual attraction between water molecules.ii) Adhesion Attraction of water molecules to polar surfaces (such as the surface of tracheary elements).

Answer 2

Explanation:

Ascent of sap is the movement of water and minerals from the roots to the aerial parts of the plant through xylem tissue.

Ascent of sap refers to the upward movement of water from the roots to all the other parts of the plant. The most accepted theory for ascent of sap in higher plants is Transpirational pull theory. Refer to this link for further details as it is well explained in the study material