- Life Sciences
double-membraned, pigmented, cytoplasmic organelles found in plant cells. The organelles have various physiological functions, such as the synthesis and storage of various substances.
the right and left halves of bilaterally symmetrical organisms are mirror images of each other...
the non-living ground tissue with thick-walled cells that gives strength, support and protection...
a biological classification group (taxon) that is divided into families.