Explain PLASTID in detail

The?plastid?(Greek: ???????; plast?s: formed, molded ? plural?plastids) is a?membrane-boundorganelle found in the?cells?of?plants,?algae, and some other?eukaryotic?organisms. Plastids were discovered and named by?Ernst Haeckel, but?A. F. W. Schimper?was the first to provide a clear definition. Plastids are the site of manufacture and storage of important chemical compounds used by the cells of?autotrophic?eukaryotes. They often contain?pigmentsused in?photosynthesis, and the types of pigments in a plastid determine the cell's color. They have a common evolutionary origin and possess a double-stranded?DNA?molecule that is circular, like that of?prokaryotic cells.