Flowering Plants Enticed Animals to Carry Pollen
Cretaceous period: About 130 years ago, in this period, flowering plants appeared. These flowering plants evolved from a group of conifer-like plants.
A large advantage of these flowering plants is the pollination by insects. Conifers are wind-pollinated. The vast majority of pollen grains fail to reach their target. Pollination by insects wastes less pollen than the other technique.
Other advantages include more rapod reproduction and rapid growth (in some cases).
Today, flowering plants dominate the land. An exception to this is in cold northern lands. There, conifers still prevail.
NOTE: Picture above from http://www.cnn.com/EARTH/9804/08/threatened.plants.ap/ Picture below from http://www.backyardnature.net/fpdefine.htm.
Simple flowering plant.