Autotroph

Autotroph comes from the Greek "auto" meaning "self" and "troph" meaning "nutrition." Autotrophs are therefore "self-feeders."  It is the ability to be self-sustained by producing food  and energy from inorganic compounds such as carbon dioxide. This includes plants and algae.
(http://factoidz.com/what-is-an-autotroph-how-plants-make-energy)

( A flower is an example of an autotroph. It feeds itself and gains energy by photosynthesis)