Etioplast

Etioplasts (from Fr. Etiole " pale " and ancient Greek πλαστός plastos "formed" ) are cell organelles in biology. These plastids are chloroplasts, which were not exposed to light and which changed due to the lack of light, the inner membrane structure and has the chlorophyll back or not yet formed. By irradiation with light, they develop into chloroplasts. It also thylakoids are then formed, Sitting necessary for photosynthesis chlorophylls in their membranes.

• Cellular component