According to the pressure flow hypothesis
A. Phloem loading produces a hypertonic condition in the sieve tubes.
B. Water potential gradient facilitates the mass movement in the phloem.
C. Phloem unloading is a passive process .

The process of loading at the source produces a hypertonic condition in the phloem.

The process of loading at the source produces a hypertonic condition in the phloem.

The process of loading at the source produces a hypertonic condition in the phloem.

Assertion :- Mass movement in the phloem is due to loading of sucrose. Reason:- Sucrose loading in phloem leads to creation of water potential gradient.

The loading and unloading of food (phloem sep) to and from the sieve tube cells is

Arrange the following events in a correct order that explains the mass flow of materials in the phloem? (i) Water diffuses into the sieve tube elements. (ii) Leaf cells produce sugar by photosynthesis. (iii) Solutes are actively transported into the sieve elements. (iv) Sugar is transported from cell to cell in the leaf. (v) Sugar moves down the stem.