Those parts of flowering plants which are the sexual reproductive units that produce and contain the sex cells (gametes) of plants.

Flowers also attract pollinators (birds, insects, etc.) which carry off pollen from the stamen and fertilize other flowers of the same or other plants.

This twining herbaceous climber plant has lobed leaves and funnel-shaped flowers that open only in the morning; and that is why they are called: "Morning Glories".

Here is a hoverfly, also called a flower fly or a syrphid fly; which is part of the insect family Syrphidae and the adults of this group are often seen hovering or nectaring on flowers because they are known to feed primarily on nectar and pollen.