| Protandry is favoured in areas of high food abundance and protogyny occurs in areas of low food abundance. |
| Protogyny and protandry are the underlying mechanisms favouring allogamy in monoecious palms. |
| At the extreme, true prolificacy leads to protogyny whereas normal maize shows protandry. |
| Protogyny may also reduce geitonogamy if the flowers on an inflorescence develop so that all open flowers are in either male or female phase at any given time. |
| Sequential hermaphroditism is common in marine fishes, with protogyny predominating. |
