Question

how does transpiration helps in upward movement from root to leaves

Answer 1

Transpiration is the loss of water from the leaves for cooling the plant. It helps in upward movement of food and water because when the leaves lose water from their surface, it creates a pressure which pulls water and food upwards.

Answer 2

Answer:

Explanation:

Transpiration causes water to be lost from the leaves. This loss of water creates a pull on the sap being conducted by the xylem,thus causing the sap to move upward.