Botany - Sexual Reproduction in Flowering Plants Question with Solution | TestHub
Which of the following conditions are seen because of the structure and arrangement of flowers in maize and papaya?
| Maize | Papaya | ||
| I. | Autogamy | Prevented | Prevented |
| Geitonogamy | Prevented | Prevented | |
| II. | Autogamy | Prevented | Prevented |
| Geitonogamy | Prevented | Allowed | |
| III. | Autogamy | Allowed | Prevented |
| Geitonogamy | Prevented | Allowed | |
| IV. | Autogamy | Prevented | Prevented |
| Geitonogamy | Allowed | Prevented |
Options:
Answer:
Solution:
Autogamy is a type of pollination in which pollen grains produced by one flower are deposited on the stigma of the same flower. Geitonogamy is a type of pollination in which pollen grains produced by one flower are deposited on the stigma of another flower but on the same plant.
Zea maysor maize produces unisexual flowers. The male flowers and female flowers present on the same plant. Thus, it is a monoecious plant. In this autogamy is prevented but geitonogamy will occur.
Carica papayaor papaya also produces unisexual flowers. The male flowers and female flowers present on different plants. Thus, it is a dioecious plant. In this, both autogamy and geitonogamy are prevented.
