Question

What factors facilitate the movement of sap through plant? ​

Answer 1

The Pressure Flow Or Mass Flow Hypothesis:

Water; from the adjacent xylem; moves into the phloem, by osmosis. This results in an increase of osmotic pressure. It forces the phloem sap to areas of lower pressure, i.e. towards the sink. The osmotic pressure must be reduced at the sink.

Answer 2

Answer:

Sap in the xylem moves, in response to physical forces, pressure and osmotic gradients.

Three primary processes can cause xylem sap to flow:

- transpiration

- root pressure

- stem pressure.