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.
primary function in the cells of flowers is to attract agents of pollination,
and in fruit to attract agents of dispersal.