The chloroplast is the food producer in plants and is responsible for the green color in plants.

Cell Structure: Chloroplasts
Cell Structure: Chloroplasts, Biology4kids.com, Introduction to chloroplasts.
Chloroplast
Chloroplast Wikipedia.org Article with diagram and illustrations; click to enlarge.
Chloroplast
Chloroplast, By David Darling, Daviddarling.info, Brief encyclopedia article on the chloroplast with illustrations.
Chloroplast
Chloroplast SimpleWikipedia.org Text and images on chloroplast function and structure.
chloroplast
chloroplast FactMonster.com Brief explanation of chloroplast.
Chloroplasts
Chloroplasts, Georgia State University, Two nice sketches and description of chloroplasts and its parts.
Exploring Photosynthesis in a leaf - Chloroplasts, Grana, Stroma, Thylakoids and other parts
Exploring Photosynthesis in a leaf - Chloroplasts, Grana, Stroma, Thylakoids and other parts, By David E. Watson, FTexploring.com, Wonderful website! This whole page is on photosynthesis; scroll
Photosynthesis
Photosynthesis, BBC Higher Bitesize Revision, Has a review of material and a quiz.