How many types of pollination exist?
Self-pollination occurs when pollen is transferred within a single flower without an agent. Exceedingly rare, this pollination is found in flowers whose anthers touch the stigmas before the flower opens. Self-fertility (self-pollinating) is the flowers ability to set fruit if an agent brings pollen from the same plant. When the flower sets fruit with pollen from a different plant, cross-pollination results. Cross-pollinated plants acquire more diverse genetic information, enhancing the plants ability to adapt to continuous environmental changes. Often, by modifying its flower features the plant evolves to reward fewer, or just one, pollinator species thus making access harder or impossible for other pollinators. With less competition, specialized pollinators are motivated to forage between plants of the same species, cross-pollinating them. Unlike honeybees, bumblebees do not communicate flower location with each other. This increases the chances that bumblebees will concentrate on the
