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double-membraned, pigmented, cytoplasmic organelles found in plant cells. The organelles have various physiological functions, such as the synthesis and storage of various substances.
(also called autotrophic organisms) organisms that produce their own organic food, mainly...
a thin, flexible layer of the plant cell wall inside the middle lamella. It consists mainly of...
kingdom of multicellular eukaryotic organisms that do not have cell walls, feed...