Question

question 7
which of the following drives the transportation of sugar in a plant?
a positive pressure
b negative pressure

Explanation:

In plants, sugar (phloem sap) is transported through the phloem by the pressure - flow mechanism. Source cells load sugar into the phloem, creating a high solute concentration which causes water to enter by osmosis, building positive pressure. This positive pressure drives the movement of phloem sap (containing sugar) from source to sink regions.

Answer:

A. positive pressure