Question

State the transpiration pull theory

Answer 1

Answer:

Answers. It is the pulling force responsible for lifting the water column. ... Thus the transpiration pull acts as pull from above on the-whole of water column of the plant which pushes the water column of xylem vessels of roots lowers leaves i.e. in an upward direction. This is how ascent of sap is affected in plants

Answer 2

Answer:

A transpiration pull could be simply defined as biological process in which the force of pulling is produced in the xylem tissue. the force helps in the upward movement of water into the xylem vessels.ln this process, loss of water in form of vapour through leaves are observed