In sieve tubes, the maximum hydrostatic pressure is found to be: (in $bars$)

The "Cytoplasmic streaming hypothesis" is concerned with

In plants,polymerisation of excess sugar into starch takes place in the . . . . . . at the sink end.

Bidirectional elements transportation is seen in:

Glucose produced by photosynthesis is converted into sucrose,then moved into the companion cells and then into the living phloem sieve tube cells by........

The statement "There is no translocation at low temperature" was proposed by