The growing point is the plant, the roots can be removed, the leaves can be removed, the pseudostem can be removed and the growing point will regrow to the same exact plant because it is the same exact plant.
Knowing that the growing point will move, usually upwards, to be near ground level. The position of the growing point can be made to rise by raising the ground level.
The middle photo is a good example of this. The arrow is pointing at the growing point but the growing point was originally at the bottom of the photo and as the plant grew it moved upwards to be near ground level.
Because the part of the rhizome below the growing point is not essential for the survival of the plant, it can be separated and used for the production of new offshoots.
The main growing point will be above the highest root initials.
I find it easier to remove and replant the main growing point with the upper plant and leave the lower rhizome intact with it's roots to produce new offshoots.
