The ovule of an angiosperm is technically equivalent to
Megaspore mother cell
Megaspore
Megasporangium
Megasporophyll
Ovule of an Angiosperm is equivalent to megasporangium which consists of 2 synergids, 1 egg, 3 antipodal cells and a secondary nucleus. Megaspore mother cell (2n) gives rise to ovule. Megasporophylis are sterile structures on which ovules may be present.