Chloroplasts are membrane-bound plastids that contain a network of membranes embedded into a liquid matrix and harbor the photosynthetic pigment called chlorophyll. Chloroplasts are a type of plastid i.e. a round, oval, or disk-shaped structure that synthesizes and stores food. Chloroplasts differ from other types of plastids by their green color, which is caused by the presence of two pigments: Chlorophyll a and Chlorophyll b. Chloroplast are plant cell organelles responsible for photosynthesis, converting sunlight into chemical energy using chlorophyll. Their structure includes double membranes, stroma, and thylakoid stacks (grana) where light and dark reactions occur. Definition of Chloroplasts Chloroplasts are the elliptical, oval, spherical, star-shaped, ribbon-like lipoproteinous double membrane-bound organelles found in the cytoplasm of plant cells that contain chlorophylls and help in photosynthesis. Structure of Chloroplasts Chloroplasts are large cell organelles about 5 μm-10 μm long that are bounded by a double membrane called chloroplast envelope and also have their own genome (double helix, circular DNA). In electron microscopic studies, each ...
