A botanist observes a plant species that bears only staminate flowers on one individual and only pistillate flowers on another individual of the same species. Which of the following pollination events is/are naturally possible in this species?

Step-by-step solution

The scenario describes a dioecious plant species, where an individual plant is either strictly male (bearing only staminate flowers) or strictly female (bearing only pistillate flowers). Autogamy (pollination within the same flower) is impossible because the flowers are unisexual. Geitonogamy (pollination between different flowers of the same plant) is impossible because a single plant does not possess both male and female flowers. Xenogamy (pollination between flowers of different plants) is the only possible poll