Stem modified into green,flattened branches of unlimited growth for assimilatory function is

In ginger,vegetative propagation occurs through

Stolon,offset and rhizome are different forms of stem modifications. How can these modified forms of stem be distinguished from each other?

Chlorophyll-containing fleshy cylindrical structures found in $Euphorbia$ are modified:

Runner is

Which of the following is an example of a runner?