In which form is food transported in plants?

The flow of organic solutes in plants is in

The supply ends in the transport of solutes are:

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

Sucrose moves into sieve tube elements by

Consider the following statements and choose the correct option from the codes given below:
$I.$ Loading of phloem is related to the increase of sugar in phloem.
$II.$ Active loading of sugar in the sieve tube of phloem is driven by a proton pump.
$III.$ Pressure may be positive or negative in sieve tube cells.
$IV.$ Water and solutes move through the sieve tube against the pressure gradient.
$V.$ Cytoplasmic strands pass through the holes in sieve plates and form continuous filaments.