If you are given a task to analyse phloem sap chemical,which of the following will be present in least concentration?

The carbohydrates synthesized in the leaves are transported through sieve tubes most commonly in the form of

Select the incorrect statement.

In what form are carbohydrates generally translocated as nutrients in plants?

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.

Arrange the following events of mass flow of organic material in sequence:
$I$. Sugars are transported from cell to cell in the leaf
$II$. Food is synthesized in form of glucose by leaf cells
$III$. Movement of water takes place into sieve tube elements
$IV$. Downward movement of sugar occurs in the stem
$V$. Solutes are actively transported into the sieve elements