An estimated 20,000 species of bees are found throughout the world except in Antarctica. Some of the most common types of bees include bumblebees, honeybees, carpenter bees and killer bees.
Bees primarily live in hive colonies that house the workers, drones and queen bee. The sole purpose of the queen bee is to reproduce by breeding with the drones. The workers are sterile female bees that are in charge of cleaning the hive, gathering food for the entire colony and tending to the needs of the young. Bees can grow up to 1.6 inches in length.
Bees form a mutually beneficial relationship with plants. The flowers of plants provide nectar and pollen, which serve as the main diet of bees. In turn, these insects play an important role in cross-pollinating many species of plants.