Complex sentence: A multielement analysis of the gelatinous outer layer, the embryonic receptacle and the gleba were undertaken, and the gelatinous layer proved richest in potassium, calcium, manganese and iron.
Split into simpler sentences: A multielement analysis of the gelatinous outer layer, the embryonical receptaculum and the gleba were studied. The gelatinous layer proved richest in potassium, calcium, manganese and iron.