ETIOPLAST - plastid whose development into a chloroplast has been arrested (stopped)             by lack of light. They contain a dark crystalline bodies, called prolamellar body,             which is essentially a cluster of thylakoid membranes in a somewhat tubular form.

LEUCOPLAST types:  non-pigmented plastids...             amyloplasts - colorless plant organelle related to starch production & storage            aleuroplasts - colorless plant organelle related to protein production & storage            elaioplats - colorless plant organelle related to oil & lipid production & storage

CHROMOPLASTS - often red, yellow or orange in color;                      they are found in petals of flowers and in fruit.                      their color is due to two pigments, carotene and xanthophyll.         function - primary function in the cells of flowers is to attract agents of pollination,                             and in fruit to attract agents of dispersal.

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