Bees

A worker bee is any female bee. They do all the work in the hive, and they control most of what goes on inside. The worker bee is the smallest of the honey bees. She is a compact version of the queen and the drone. Jobs may include  Drone Feeding, Queen Attendant, Pollen Packing, Honey Sealing, Honeycomb Building, Water Carriers, Guard bees, Foraging...   

Close up pollination:  Pollination occurs when pollen grains from the male part of one flower (anther) are transferred to the female part (stigma) of another flower. Here is a bee collecting pollen.

The wings of the bumblebee beat 130 times or more per second, according to the National Wildlife Federation, and the beating combined with their large bodies vibrates flowers until they release pollen, which is called buzz pollination.

leafcutter bees are among the species scientists call "solitary bees." They do not live in a communal nest or hive like honeybees. Instead, as the insect’s name suggests, the female leafcutter cuts leaves and uses them to build a nest. 

The European honey bee is the most important insect pollinator of cultivated agricultural and horticultural crops worldwide

Most Bees have antennae made up of thirteen segments in males and twelve in females

Nectaries on flowers produce nectar to attract animal visitors. These are usually situated at the base of the petals

Bees can survive almost everywhere, except in the Arctic and Antarctic and at high altitudes.

The relationship between a plant and an insect is called symbiosis.