Question

How do organ cultures differ from cell cultures

Answer 1

https://en.wikipedia.org/wiki/Organ_culture

Answer 2

1-organ culture like culturing roots, root hairs ,shoot tip, buds,cotyledons ,ovules ,pollen grains,young leaves,these are organs ....in other words these are your explants
2-tissue culture like culturing pith tissue,palisade tissue of a leaf ,any piece contains one type of cells forming a tissue
3-cell culture when your explant is separate cells such as suspension cultures of callus which may be in separate cells or aggregates of few hundreads of cells of the same type.
any culture type can be converted to others
any cells can produce organ and organs can produce callus on some media which may produce organs
in this amazing technology you can produce whole plants from
organs,tissues or even cells.