| Like other seed plants, angiosperms are heterosporangiate, producing pollen and ovules in different organs. |
| Consequently, it reduces male fitness because geitonogamous pollen grains are barred from fertilizing ovules. |
| Even when taking contraceptives or anovulants, the number of ovules that we ourselves can use reduces gradually. |
| As the ovary elongates only above the placenta, the ovules appear basal at anthesis. |
| Some carpels and ovules were only slightly enlarged despite the flowers being cross-pollinated by hand. |
| The entire placenta with attached ovules was removed via a longitudinal incision in the ovary wall. |
