Notes on the meaning, structure and functions of Plastids. Plastids are large cytoplasmic organelles, enclosed by a double membrance. They are mostly found in plants with exception of some lower groups like fungi. Few animals, like protozoan flagellates, also contain these.
Tag Archives | plastids
Plastids are double membraned organelles which are found in plant cells only. They are usually spherical or discoldal in shape and their average size is 4 to 6 um. A plastid shows tow distinct regions-grana and stroma Grana are stacks of membrane-bound, flattened, discold sacs containing chlorophyll molecules.